Company lists · Data verified August 2026

Top 25 AI api platform companies based in San Francisco, United States

Name: AI api platform companies based in San Francisco, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 161 companies tracked

There are 161 AI api platform companies headquartered in San Francisco, United States (RevenueBase, August 2026). RevenueBase tracks 14,164 professional contacts across them, including 4,003 with verified work emails and 2,234 with mobile numbers. San Francisco is the largest hub.

This list covers AI api platform companies headquartered in San Francisco, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

161Companies

14,164Contacts tracked

4,003Verified emails

2,234Mobile numbers

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The 25 largest AI api platform companies based in San Francisco, United States

Ranked by team size

Top 25 of 161 AI api platform companies based in San Francisco, United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Turing	San Francisco, CA	1,001-5,000	5,900	1,102
2	Writer	San Francisco, CA	n/a	1,564	391
3	Cohere	San Francisco, CA	201-500	940	430
4	Airtable	San Francisco, CA	501-1,000	928	484
5	AI R Everymind	San Francisco, CA	501-1,000	485	103
6	Tools For Humanity	San Francisco	51-200	393	199
7	Weights & Biases	San Francisco, CA	201-500	342	76
8	Together AI	San Francisco, CA	201-500	292	192
9	gnani.ai	San Francisco, CA	51-200	230	95
10	VYRO	San Francisco	51-200	181	43
11	Baseten	San Francisco, CA	201-500	173	111
12	Arize AI	San Francisco, CA	51-200	157	108
13	Murf AI	San Francisco, CA	51-200	145	68
14	MERGE	San Francisco, CA	51-200	126	83
15	Assemblyai	San Francisco, CA	51-200	101	74
16	Truefoundry	San Francisco, CA	11-50	95	51
17	Voltage Park	San Francisco, CA	51-200	91	71
18	Runpod	San Francisco, CA	51-200	81	43
19	Berribot	San Francisco, CA	51-200	81	5
20	Stackai	San Francisco, CA	51-200	67	37
21	INTUZ	San Francisco, CA	51-200	67	3
22	R&d Center Winstars.ai	San Francisco, CA	51-200	42	10
23	PLAIN	San Francisco	11-50	38	20
24	Replicate	San Francisco, CA	11-50	30	19
25	Wiro AI	San Francisco, CA	11-50	26	8

Showing 25 of 161 AI api platform companies based in San Francisco, United States

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AI api platform companies based in San Francisco, United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

San FranciscoLargest hub · 161 HQs

2,234Contacts with mobile numbers

24Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

AI api platform companies by metro in the United States

Metro	Companies
AI api platform companies in San Francisco	161
AI api platform companies in New York	94
AI api platform companies in Austin	38
AI api platform companies in Los Angeles	35
AI api platform companies in Miami	32
AI api platform companies in Palo Alto	30
AI api platform companies in Dover	28

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “AI api platform companies”, with match quality audited by blind human judging, and headquartered in San Francisco, United States.
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: Contact records re-verify on a rolling cadence; 24 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many AI api platform companies are there based in San Francisco, United States?

There are 161 AI api platform companies headquartered in San Francisco, United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Turing, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most AI api platform companies?

San Francisco leads with 161 headquartered companies, followed by New York (94) and Austin (38).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 4,003 verified decision-maker contacts tracked across these 161 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.