Company lists · Data refreshed September 2026
Top 25 Open source AI startups worldwide
RevenueBase identified 604 company matches for open source AI startups worldwide as of September 2026 and tracks 13,117 professional contacts across them, including 1,862 with verified work emails. The United States is the largest market and San Francisco the largest hub.
This list covers company matches for open source AI startups worldwide, 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 20, 2026. Country and city lists for open source AI startups follow the table.
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 open source AI startups worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,170 contacts → | ||||
Exact match “Join the AI revolution with Remotasks, where experts can shape the future of AI tools.” Recorded in the RevenueBase company graph · Sep 20, 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 20, 2026 · View company records in RevenueBase | |||||
| 3 | 608 contacts → | ||||
Exact match “The AI community building the future.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 405 contacts → | ||||
Exact match “Founded in 2012, H2O.ai is on a mission to democratize AI.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 242 contacts → | ||||
Exact match “AI21 is pioneering the development of enterprise AI Systems and foundation models.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 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 20, 2026 · View company records in RevenueBase | |||||
| 7 | 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 20, 2026 · View company records in RevenueBase | |||||
| 8 | 140 contacts → | ||||
Exact match “The AI development platform - From idea to AI, Lightning fast.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 126 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 91 contacts → | ||||
Exact match “deepset is the creator of the open-source Haystack AI orchestration framework and the Haystack Enterprise Platform.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 86 contacts → | ||||
Exact match “ServiceNow AI Research: shaping the future of work with AI At ServiceNow, we’re putting AI to work for people.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 84 contacts → | ||||
Exact match “Humanitarians AI exists to make a positive global impact through ethical, open-source AI solutions.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 81 contacts → | ||||
Exact match “LiveKit offers open source frameworks and a cloud platform for building voice, video, and physical AI agents.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 79 contacts → | ||||
Exact match “This is the official account of AI inside.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 75 contacts → | ||||
Exact match “We believe that AI is the most powerful tool our generation has at hand.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 64 contacts → | ||||
Exact match “Unify data, models, and compute with the fastest path to a production-ready AI system.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 17 | 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 20, 2026 · View company records in RevenueBase | |||||
| 18 | 55 contacts → | ||||
Exact match “Ultralytics is a leading AI company dedicated to creating transformative, open-source computer vision solutions.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 54 contacts → | ||||
Exact match “An open source machine learning framework that accelerates the path from research prototyping to production deployment.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 52 contacts → | ||||
Exact match “Imbue develops tools that help people think, create, and build.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 47 contacts → | ||||
Exact match “We build AI for data and analytics engineering.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 47 contacts → | ||||
Exact match “AI Planet was started in 2020 with a vision of making AI accessible to everyone.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 43 contacts → | ||||
Exact match “Building an AI agent is easy.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 42 contacts → | ||||
Exact match “We are a start-up company specializing in AI and Machine Learning technology.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 25 | 32 contacts → | ||||
Exact match “Nous Research is an AI research lab creating world-class open source AI.” Recorded in the RevenueBase company graph · Sep 20, 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 “open source AI startups”. 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 604 open source AI startups worldwide
See the full list, filter by size, metro and specialty, and access 1,862 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Open source AI startups worldwide at a glance
As of Sep 20, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for open source AI startups are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “open source AI startups” 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. 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 1,862 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 20, 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.
Open source AI startups by location
1 lists · largest firstEvery Open source AI startups list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 “open source AI startups”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many open source AI startups are there worldwide?
RevenueBase identified 604 company matches for open source AI startups worldwide 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?
Remotasks tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most open source AI startups?
The United States leads with 153 companies. Every open source AI startups list by country and city is linked on this page.
Which city has the most open source AI startups?
San Francisco leads with 30 company records, followed by London (18) and New York (13).
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 1,862 professional contacts with verified work emails tracked across these 604 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 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 604 open source AI startups worldwide. 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.
More company lists
Company intelligence · public preview
Top 25 open source AI startups worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 604 matching company records for open source AI startups worldwide, with 13,117 tracked contacts and 1,862 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 20, 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 open source AI startups worldwide
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 |  Remotasksremotasks.comHQ: San Francisco, United StatesReported employees: 5,001-10,000 | San Francisco, United States | 5,001-10,000 | Exact match | 4,170 contacts → |
“Join the AI revolution with Remotasks, where experts can shape the future of AI tools.” Recorded description excerpt · September 20, 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Hugging Facehuggingface.coHQ: Paris, United StatesReported employees: Not recorded | Paris, United States | Not recorded | Exact match | 608 contacts → |
“The AI community building the future.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  h2o.aih2o.aiHQ: Mountain View, CA, United StatesReported employees: 201-500 | Mountain View, CA, United States | 201-500 | Exact match | 405 contacts → |
“Founded in 2012, H2O.ai is on a mission to democratize AI.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Ai21 Labsai21.comHQ: Tel Aviv, IsraelReported employees: 201-500 | Tel Aviv, Israel | 201-500 | Exact match | 242 contacts → |
“AI21 is pioneering the development of enterprise AI Systems and foundation models.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Thinking Machines LABthinkingmachines.aiHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 126 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 10 |  Deepset, Makers Of Haystackdeepset.aiHQ: Berlin, GermanyReported employees: 51-200 | Berlin, Germany | 51-200 | Exact match | 91 contacts → |
“deepset is the creator of the open-source Haystack AI orchestration framework and the Haystack Enterprise Platform.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Servicenow AI Researchservicenow.comHQ: Montreal, CA, CanadaReported employees: Not recorded | Montreal, CA, Canada | Not recorded | Exact match | 86 contacts → |
“ServiceNow AI Research: shaping the future of work with AI At ServiceNow, we’re putting AI to work for people.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Humanitarians AIhumanitarians.aiHQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 84 contacts → |
“Humanitarians AI exists to make a positive global impact through ethical, open-source AI solutions.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Livekitlivekit.com HQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 81 contacts → |
“LiveKit offers open source frameworks and a cloud platform for building voice, video, and physical AI agents.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  AI Inside INCinside.aiHQ: 渋谷区渋谷3-8-12, JapanReported employees: 51-200 | 渋谷区渋谷3-8-12, Japan | 51-200 | Exact match | 79 contacts → |
“This is the official account of AI inside.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  understand.aiunderstand.aiHQ: Karlsruhe, GermanyReported employees: 51-200 | Karlsruhe, Germany | 51-200 | Exact match | 75 contacts → |
“We believe that AI is the most powerful tool our generation has at hand.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  union.aiunion.aiHQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 64 contacts → |
“Unify data, models, and compute with the fastest path to a production-ready AI system.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Ultralyticsultralytics.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 55 contacts → |
“Ultralytics is a leading AI company dedicated to creating transformative, open-source computer vision solutions.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Pytorchpytorch.orgHQ: San Francisco, CA, United StatesReported employees: 501-1,000 | San Francisco, CA, United States | 501-1,000 | Exact match | 54 contacts → |
“An open source machine learning framework that accelerates the path from research prototyping to production deployment.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  IMBUEimbue.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 52 contacts → |
“Imbue develops tools that help people think, create, and build.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Altimate AIaltimate.aiHQ: Sunnyvale, United StatesReported employees: 11-50 | Sunnyvale, United States | 11-50 | Exact match | 47 contacts → |
“We build AI for data and analytics engineering.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  AI Planetaiplanet.comHQ: Leuven, BelgiumReported employees: 51-200 | Leuven, Belgium | 51-200 | Exact match | 47 contacts → |
“AI Planet was started in 2020 with a vision of making AI accessible to everyone.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Future AGIfutureagi.comHQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 43 contacts → |
“Building an AI agent is easy.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  AI GENaigencorp.comHQ: Bangkok, ThailandReported employees: 11-50 | Bangkok, Thailand | 11-50 | Exact match | 42 contacts → |
“We are a start-up company specializing in AI and Machine Learning technology.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Nous Researchhermes-agent.nousresearch.comHQ: Austin, TX, United StatesReported employees: 11-50 | Austin, TX, United States | 11-50 | Exact match | 32 contacts → |
“Nous Research is an AI research lab creating world-class open source AI.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 604 company matches
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Open source AI startups: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
602 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 604 companies.
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.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
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 20, 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 ↗
Open source AI startups by location
1 lists · largest firstEvery Open source AI startups list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for open source AI startups?
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 open source AI startups did RevenueBase find worldwide?
The saved snapshot records 604 matching company records, 13,117 tracked contacts and 1,862 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 20, 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
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Cite this list
RevenueBase Data Team. Top 25 open source AI startups worldwide. Snapshot: September 20, 2026. https://revenuebase.ai/companies/browse/open-source-ai-startups.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 open source AI startups worldwide
RevenueBase records 604 matching company records for open source AI startups worldwide, with 13,117 tracked contacts and 1,862 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 20, 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 open source AI startups worldwide
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 | Remotasksremotasks.com HQ: San Francisco, United StatesReported employees: 5,001-10,000 | San Francisco, United States | 5,001-10,000 | Exact match | 4,170 contacts → |
“Join the AI revolution with Remotasks, where experts can shape the future of AI tools.” Recorded description excerpt · September 20, 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Hugging Facehuggingface.co HQ: Paris, United StatesReported employees: Not recorded | Paris, United States | Not recorded | Exact match | 608 contacts → |
“The AI community building the future.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | h2o.aih2o.ai HQ: Mountain View, CA, United StatesReported employees: 201-500 | Mountain View, CA, United States | 201-500 | Exact match | 405 contacts → |
“Founded in 2012, H2O.ai is on a mission to democratize AI.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Ai21 Labsai21.com HQ: Tel Aviv, IsraelReported employees: 201-500 | Tel Aviv, Israel | 201-500 | Exact match | 242 contacts → |
“AI21 is pioneering the development of enterprise AI Systems and foundation models.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Thinking Machines LABthinkingmachines.ai HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 126 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 10 | Deepset, Makers Of Haystackdeepset.ai HQ: Berlin, GermanyReported employees: 51-200 | Berlin, Germany | 51-200 | Exact match | 91 contacts → |
“deepset is the creator of the open-source Haystack AI orchestration framework and the Haystack Enterprise Platform.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Servicenow AI Researchservicenow.com HQ: Montreal, CA, CanadaReported employees: Not recorded | Montreal, CA, Canada | Not recorded | Exact match | 86 contacts → |
“ServiceNow AI Research: shaping the future of work with AI At ServiceNow, we’re putting AI to work for people.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Humanitarians AIhumanitarians.ai HQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 84 contacts → |
“Humanitarians AI exists to make a positive global impact through ethical, open-source AI solutions.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Livekitlivekit.com HQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 81 contacts → |
“LiveKit offers open source frameworks and a cloud platform for building voice, video, and physical AI agents.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | AI Inside INCinside.ai HQ: 渋谷区渋谷3-8-12, JapanReported employees: 51-200 | 渋谷区渋谷3-8-12, Japan | 51-200 | Exact match | 79 contacts → |
“This is the official account of AI inside.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | understand.aiunderstand.ai HQ: Karlsruhe, GermanyReported employees: 51-200 | Karlsruhe, Germany | 51-200 | Exact match | 75 contacts → |
“We believe that AI is the most powerful tool our generation has at hand.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | union.aiunion.ai HQ: Seattle, WA, United StatesReported employees: 11-50 | Seattle, WA, United States | 11-50 | Exact match | 64 contacts → |
“Unify data, models, and compute with the fastest path to a production-ready AI system.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Ultralyticsultralytics.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 55 contacts → |
“Ultralytics is a leading AI company dedicated to creating transformative, open-source computer vision solutions.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Pytorchpytorch.org HQ: San Francisco, CA, United StatesReported employees: 501-1,000 | San Francisco, CA, United States | 501-1,000 | Exact match | 54 contacts → |
“An open source machine learning framework that accelerates the path from research prototyping to production deployment.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | IMBUEimbue.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 52 contacts → |
“Imbue develops tools that help people think, create, and build.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Altimate AIaltimate.ai HQ: Sunnyvale, United StatesReported employees: 11-50 | Sunnyvale, United States | 11-50 | Exact match | 47 contacts → |
“We build AI for data and analytics engineering.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | AI Planetaiplanet.com HQ: Leuven, BelgiumReported employees: 51-200 | Leuven, Belgium | 51-200 | Exact match | 47 contacts → |
“AI Planet was started in 2020 with a vision of making AI accessible to everyone.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Future AGIfutureagi.com HQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 43 contacts → |
“Building an AI agent is easy.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | AI GENaigencorp.com HQ: Bangkok, ThailandReported employees: 11-50 | Bangkok, Thailand | 11-50 | Exact match | 42 contacts → |
“We are a start-up company specializing in AI and Machine Learning technology.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Nous Researchhermes-agent.nousresearch.com HQ: Austin, TX, United StatesReported employees: 11-50 | Austin, TX, United States | 11-50 | Exact match | 32 contacts → |
“Nous Research is an AI research lab creating world-class open source AI.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 604 company matches
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Open source AI startups: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
602 records in the displayed employee bands.
2 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 604 companies.
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.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
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 20, 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 ↗
Open source AI startups by location
1 lists · largest firstEvery Open source AI startups list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for open source AI startups?
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 open source AI startups did RevenueBase find worldwide?
The saved snapshot records 604 matching company records, 13,117 tracked contacts and 1,862 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 20, 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.
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Cite this list
RevenueBase Data Team. Top 25 open source AI startups worldwide. Snapshot: September 20, 2026. https://revenuebase.ai/companies/browse/open-source-ai-startups.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗