Company lists · Data refreshed September 2026
Top 25 Prompt engineering platforms based in the United States
RevenueBase identified 95 company matches for prompt engineering platforms associated with the United States as of September 2026 and tracks 7,638 professional contacts across them, including 1,105 with verified work emails and 1,109 with mobile numbers. San Francisco is the largest hub.
This list covers company matches for prompt engineering platforms associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 5, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest prompt engineering platforms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,886 contacts → | ||||
Exact match “TELUS Digital AI & Data Solutions partners with a diverse and vibrant community to help our customers enhance their AI and machine learning models.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 2 | 967 contacts → | ||||
Exact match “Snorkel AI is the frontier AI data lab, helping teams build the data and environments behind high-performing frontier and agentic AI.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 3 | 357 contacts → | ||||
Exact match “Weights & Biases: the AI developer platform.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 4 | 183 contacts → | ||||
Exact match “The next-generation AI developer platform unifying the development and deployment of AI for the world.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 5 | 173 contacts → | ||||
Exact match “TELUS International AI Data Solutions partners with a diverse and vibrant community to help our customers enhance their AI and machine learning models.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 6 | 166 contacts → | ||||
Exact match “Fireworks is the fastest way to build, tune, and scale AI on open models.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 7 | 140 contacts → | ||||
Exact match “The AI development platform - From idea to AI, Lightning fast.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 8 | 85 contacts → | ||||
Exact match “Comet has been building AI developer tools since 2017, first for teams training their own models, and later for those building LLM-powered agents.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 9 | 66 contacts → | ||||
Exact match “One platform to build, test, and train anything (still in ~stealth, more to come soon)” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 10 | 57 contacts → | ||||
Exact match “In 36 months, agentic AI systems will be an operating reality across major institutions.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 11 | 40 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 12 | 29 contacts → | ||||
Exact match “Essential AI is on a mission to make frontier AI more accessible through an open, collaborative platform.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 13 | 18 contacts → | ||||
Exact match “UbiAI accelerates task-specific model training from months to days.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 14 | 16 contacts → | ||||
Exact match “Acquired by Foundry in February 2026.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 15 | 15 contacts → | ||||
Exact match “Langfuse is an open source AI engineering platform.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 16 | 13 contacts → | ||||
Exact match “The horizontal AI layer for building, managing, and evaluating prompts, agents, and reusable AI skills across every team and model.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 17 | 10 contacts → | ||||
Exact match “A better way to build with LLMs.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 18 | 8 contacts → | ||||
Exact match “Bytez is the unified platform for AI models and papers.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 19 | 7 contacts → | ||||
Exact match “Crafting the Future of Business Automation with GenAI Genum turns your standart prompts into bulletproof business logic: tested, versioned, and production-ready.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 20 | 5 contacts → | ||||
Exact match “Webvizio bridges the context gap between non-technical users, developers, and AI coding tools, providing the critical data to solve development tasks on the first try.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 21 | 5 contacts → | ||||
Exact match “Backed by Bessemer Venture Partners, Tidal Ventures, and other notable angel investors, AIMon is the one platform enterprises need to drive success with AI.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 22 | 4 contacts → | ||||
Exact match “BotDojo is a comprehensive platform for designing, testing, and deploying enterprise-level AI solutions.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 23 | 4 contacts → | ||||
Exact match “The complete LLM platform with a superior developer experience and robust infrastructure.” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 24 | 4 contacts → | ||||
Exact match “Welcome to AITechfy - Your Ultimate Destination for AI Tools!” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
| 25 | 2 contacts → | ||||
Exact match “SkyDeck AI is a platform that allows businesses to safely deploy a curated selection of generative AI tools and language models within their organization while being able to…” Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “prompt engineering platforms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 95 prompt engineering platforms based in the United States
See the full list, filter by size, metro and specialty, and access 1,105 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Prompt engineering platforms based in the United States at a glance
As of Sep 5, 2026Companies by employee count
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “prompt engineering platforms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 1,105 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 5, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “prompt engineering platforms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many prompt engineering platforms are there based in the United States?
RevenueBase identified 95 company matches for prompt engineering platforms associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Telus Digital AI Data Solutions tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most prompt engineering platforms?
San Francisco leads with 21 company records, followed by New York (6) and Sheridan (4).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,105 professional contacts with verified work emails tracked across these 95 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 95 prompt engineering platforms based in the United States. Start with a free account, no credit card.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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Company intelligence · public preview
Top 25 prompt engineering platforms based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 95 matching company records for prompt engineering platforms based in the United States, with 7,638 tracked contacts and 1,105 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 5, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 prompt engineering platforms based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Telus Digital AI Data Solutionstelusdigital.comHQ: Las Vegas, NV, United StatesReported employees: 10001+ | Las Vegas, NV, United States | 10001+ | Exact match | 4,886 contacts → |
“TELUS Digital AI & Data Solutions partners with a diverse and vibrant community to help our customers enhance their AI and machine learning models.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Snorkel AIsnorkel.aiHQ: Redwood City, CA, United StatesReported employees: 201-500 | Redwood City, CA, United States | 201-500 | Exact match | 967 contacts → |
“Snorkel AI is the frontier AI data lab, helping teams build the data and environments behind high-performing frontier and agentic AI.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Weights & Biaseswandb.aiHQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 357 contacts → |
“Weights & Biases: the AI developer platform.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Modular, A Qualcomm Companymodular.comHQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 183 contacts → |
“The next-generation AI developer platform unifying the development and deployment of AI for the world.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Telus International AI Data Solutionstelusinternational.com HQ: Las Vegas, NV, United StatesReported employees: 10001+ | Las Vegas, NV, United States | 10001+ | Exact match | 173 contacts → |
“TELUS International AI Data Solutions partners with a diverse and vibrant community to help our customers enhance their AI and machine learning models.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Fireworks AIfireworks.aiHQ: San Mateo, CA, United StatesReported employees: 51-200 | San Mateo, CA, United States | 51-200 | Exact match | 166 contacts → |
“Fireworks is the fastest way to build, tune, and scale AI on open models.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Lightning AIlightning.aiHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 140 contacts → |
“The AI development platform - From idea to AI, Lightning fast.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  COMETcomet.comHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 85 contacts → |
“Comet has been building AI developer tools since 2017, first for teams training their own models, and later for those building LLM-powered agents.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Zeromatterzeromatter.comHQ: Mountain View, United StatesReported employees: 51-200 | Mountain View, United States | 51-200 | Exact match | 66 contacts → |
“One platform to build, test, and train anything (still in ~stealth, more to come soon)” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Striveworksstriveworks.comHQ: Austin, NC, United StatesReported employees: 51-200 | Austin, NC, United States | 51-200 | Exact match | 57 contacts → |
“In 36 months, agentic AI systems will be an operating reality across major institutions.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  genai.worksgenai.worksHQ: San Francisco, CA, United StatesReported employees: Not recorded | San Francisco, CA, United States | Not recorded | Exact match | 40 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 12 |  Essential AIessential.aiHQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 29 contacts → |
“Essential AI is on a mission to make frontier AI more accessible through an open, collaborative platform.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  UBIAIubiai.toolsHQ: Raleigh, NC, United StatesReported employees: 1-10 | Raleigh, NC, United States | 1-10 | Exact match | 18 contacts → |
“UbiAI accelerates task-specific model training from months to days.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Griptapefoundry.comHQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 16 contacts → |
“Acquired by Foundry in February 2026.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Langfuselangfuse.comHQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 15 contacts → |
“Langfuse is an open source AI engineering platform.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Promptlayerpromptlayer.comHQ: New York, United StatesReported employees: 11-50 | New York, United States | 11-50 | Exact match | 13 contacts → |
“The horizontal AI layer for building, managing, and evaluating prompts, agents, and reusable AI skills across every team and model.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Freeplayfreeplay.aiHQ: Boulder, CO, United StatesReported employees: 11-50 | Boulder, CO, United States | 11-50 | Exact match | 10 contacts → |
“A better way to build with LLMs.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  BYTEZbytez.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 8 contacts → |
“Bytez is the unified platform for AI models and papers.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  GENUMgenum.aiHQ: San Francisco, DE, United StatesReported employees: 1-10 | San Francisco, DE, United States | 1-10 | Exact match | 7 contacts → |
“Crafting the Future of Business Automation with GenAI Genum turns your standart prompts into bulletproof business logic: tested, versioned, and production-ready.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Webviziowebvizio.comHQ: Pittsburgh, United StatesReported employees: 1-10 | Pittsburgh, United States | 1-10 | Exact match | 5 contacts → |
“Webvizio bridges the context gap between non-technical users, developers, and AI coding tools, providing the critical data to solve development tasks on the first try.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Aimon Labsaimon.aiHQ: Palo Alto, CA, United StatesReported employees: 1-10 | Palo Alto, CA, United States | 1-10 | Exact match | 5 contacts → |
“Backed by Bessemer Venture Partners, Tidal Ventures, and other notable angel investors, AIMon is the one platform enterprises need to drive success with AI.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Botdojobotdojo.comHQ: Austin, TX, United StatesReported employees: 1-10 | Austin, TX, United States | 1-10 | Exact match | 4 contacts → |
“BotDojo is a comprehensive platform for designing, testing, and deploying enterprise-level AI solutions.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Langbaselangbase.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 4 contacts → |
“The complete LLM platform with a superior developer experience and robust infrastructure.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Aitechfyaitechfy.comHQ: Cleveland, OH, United StatesReported employees: 1-10 | Cleveland, OH, United States | 1-10 | Exact match | 4 contacts → |
“Welcome to AITechfy - Your Ultimate Destination for AI Tools!” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  skydeck.aiskydeck.aiHQ: San Jose, CA, United StatesReported employees: 11-50 | San Jose, CA, United States | 11-50 | Exact match | 2 contacts → |
“SkyDeck AI is a platform that allows businesses to safely deploy a curated selection of generative AI tools and language models within their organization while being able to…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 95 company matches
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Prompt engineering platforms: dataset insights
September 5, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
95 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 5, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for prompt engineering platforms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many prompt engineering platforms did RevenueBase find based in the United States?
The saved snapshot records 95 matching company records, 7,638 tracked contacts and 1,105 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 5, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Cite this list
RevenueBase Data Team. Top 25 prompt engineering platforms based in the United States. Snapshot: September 5, 2026. https://revenuebase.ai/companies/prompt-engineering-platforms/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
- Real estate companies based in the United States
Company intelligence · public preview
Top 25 prompt engineering platforms based in the United States
RevenueBase records 95 matching company records for prompt engineering platforms based in the United States, with 7,638 tracked contacts and 1,105 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 5, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 prompt engineering platforms based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Telus Digital AI Data Solutionstelusdigital.com HQ: Las Vegas, NV, United StatesReported employees: 10001+ | Las Vegas, NV, United States | 10001+ | Exact match | 4,886 contacts → |
“TELUS Digital AI & Data Solutions partners with a diverse and vibrant community to help our customers enhance their AI and machine learning models.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Snorkel AIsnorkel.ai HQ: Redwood City, CA, United StatesReported employees: 201-500 | Redwood City, CA, United States | 201-500 | Exact match | 967 contacts → |
“Snorkel AI is the frontier AI data lab, helping teams build the data and environments behind high-performing frontier and agentic AI.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Weights & Biaseswandb.ai HQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 357 contacts → |
“Weights & Biases: the AI developer platform.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Modular, A Qualcomm Companymodular.com HQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 183 contacts → |
“The next-generation AI developer platform unifying the development and deployment of AI for the world.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Telus International AI Data Solutionstelusinternational.com HQ: Las Vegas, NV, United StatesReported employees: 10001+ | Las Vegas, NV, United States | 10001+ | Exact match | 173 contacts → |
“TELUS International AI Data Solutions partners with a diverse and vibrant community to help our customers enhance their AI and machine learning models.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Fireworks AIfireworks.ai HQ: San Mateo, CA, United StatesReported employees: 51-200 | San Mateo, CA, United States | 51-200 | Exact match | 166 contacts → |
“Fireworks is the fastest way to build, tune, and scale AI on open models.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Lightning AIlightning.ai HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 140 contacts → |
“The AI development platform - From idea to AI, Lightning fast.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | COMETcomet.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 85 contacts → |
“Comet has been building AI developer tools since 2017, first for teams training their own models, and later for those building LLM-powered agents.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Zeromatterzeromatter.com HQ: Mountain View, United StatesReported employees: 51-200 | Mountain View, United States | 51-200 | Exact match | 66 contacts → |
“One platform to build, test, and train anything (still in ~stealth, more to come soon)” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Striveworksstriveworks.com HQ: Austin, NC, United StatesReported employees: 51-200 | Austin, NC, United States | 51-200 | Exact match | 57 contacts → |
“In 36 months, agentic AI systems will be an operating reality across major institutions.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | genai.worksgenai.works HQ: San Francisco, CA, United StatesReported employees: Not recorded | San Francisco, CA, United States | Not recorded | Exact match | 40 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 12 | Essential AIessential.ai HQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 29 contacts → |
“Essential AI is on a mission to make frontier AI more accessible through an open, collaborative platform.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | UBIAIubiai.tools HQ: Raleigh, NC, United StatesReported employees: 1-10 | Raleigh, NC, United States | 1-10 | Exact match | 18 contacts → |
“UbiAI accelerates task-specific model training from months to days.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Griptapefoundry.com HQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 16 contacts → |
“Acquired by Foundry in February 2026.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Langfuselangfuse.com HQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 15 contacts → |
“Langfuse is an open source AI engineering platform.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Promptlayerpromptlayer.com HQ: New York, United StatesReported employees: 11-50 | New York, United States | 11-50 | Exact match | 13 contacts → |
“The horizontal AI layer for building, managing, and evaluating prompts, agents, and reusable AI skills across every team and model.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Freeplayfreeplay.ai HQ: Boulder, CO, United StatesReported employees: 11-50 | Boulder, CO, United States | 11-50 | Exact match | 10 contacts → |
“A better way to build with LLMs.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | BYTEZbytez.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 8 contacts → |
“Bytez is the unified platform for AI models and papers.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | GENUMgenum.ai HQ: San Francisco, DE, United StatesReported employees: 1-10 | San Francisco, DE, United States | 1-10 | Exact match | 7 contacts → |
“Crafting the Future of Business Automation with GenAI Genum turns your standart prompts into bulletproof business logic: tested, versioned, and production-ready.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Webviziowebvizio.com HQ: Pittsburgh, United StatesReported employees: 1-10 | Pittsburgh, United States | 1-10 | Exact match | 5 contacts → |
“Webvizio bridges the context gap between non-technical users, developers, and AI coding tools, providing the critical data to solve development tasks on the first try.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Aimon Labsaimon.ai HQ: Palo Alto, CA, United StatesReported employees: 1-10 | Palo Alto, CA, United States | 1-10 | Exact match | 5 contacts → |
“Backed by Bessemer Venture Partners, Tidal Ventures, and other notable angel investors, AIMon is the one platform enterprises need to drive success with AI.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Botdojobotdojo.com HQ: Austin, TX, United StatesReported employees: 1-10 | Austin, TX, United States | 1-10 | Exact match | 4 contacts → |
“BotDojo is a comprehensive platform for designing, testing, and deploying enterprise-level AI solutions.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Langbaselangbase.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 4 contacts → |
“The complete LLM platform with a superior developer experience and robust infrastructure.” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Aitechfyaitechfy.com HQ: Cleveland, OH, United StatesReported employees: 1-10 | Cleveland, OH, United States | 1-10 | Exact match | 4 contacts → |
“Welcome to AITechfy - Your Ultimate Destination for AI Tools!” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | skydeck.aiskydeck.ai HQ: San Jose, CA, United StatesReported employees: 11-50 | San Jose, CA, United States | 11-50 | Exact match | 2 contacts → |
“SkyDeck AI is a platform that allows businesses to safely deploy a curated selection of generative AI tools and language models within their organization while being able to…” Recorded description excerpt · September 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 95 company matches
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Prompt engineering platforms: dataset insights
September 5, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
95 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 5, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for prompt engineering platforms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many prompt engineering platforms did RevenueBase find based in the United States?
The saved snapshot records 95 matching company records, 7,638 tracked contacts and 1,105 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 5, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Cite this list
RevenueBase Data Team. Top 25 prompt engineering platforms based in the United States. Snapshot: September 5, 2026. https://revenuebase.ai/companies/prompt-engineering-platforms/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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