All Rankings

Top 100 AI Startups in San Francisco 2026

The most-funded artificial intelligence and machine learning startups headquartered in San Francisco, ranked by total capital raised.

Known total funding for 100 of 100 ranked companies: $461.1B.

Showing top 100 matching companies · Ranked by total funding raised

Use company data through the API.
Example request
curl "https://indexed.vc/api/v1/companies?industries=Artificial+Intelligence,Generative+AI,Machine+Learning&countries=United+States&cities=San+Francisco&operatingStatus=active&sort=total_funding_raised&order=desc&limit=100" -H "X-API-Key: YOUR_API_KEY"

The API has no company type filter, so public companies can appear; this list counts private companies only.

The API cannot leave out companies whose latest round is a grant, private equity or debt financing; this list does.

Data from Indexed.vcUpdated

Methodology: up to 100 active companies matching this list's filters are ordered by disclosed total funding in USD. Companies whose latest round is one of: Grant, Private Equity, Debt Financing are excluded. Totals include recorded grants and other qualifying funding, not just equity. Open a company profile for its funding summary and available detail. How this data is built.

1
OpenAI

OpenAI is an AI research and deployment company dedicated to ensuring that general-purpose artifi...

San Francisco, United States5001–10000Artificial Intelligence, Generative AI
Corporate RoundTotal funding$179.6BMar 2026
2
Anthropic

Anthropic develops reliable, interpretable, and steerable AI systems, translating frontier safety...

San Francisco, United States1001–5000Artificial Intelligence, Generative AI
Series G+Total funding$123.7BMay 2026
3
xAI

xAI builds AI systems, including Grok, with frontier reasoning, voice, and generative media capab...

San Francisco, United States201–500Artificial Intelligence, Generative AI
Series ETotal funding$47.4BJan 2026
4
Databricks

Databricks provides a unified data and AI platform that helps enterprises build and run applicati...

San Francisco, United States10001+Analytics, Artificial Intelligence
Series G+Total funding$20.0BJul 2026
5
Project Prometheus

AI company focused on applying artificial intelligence to physical tasks, launched with $6.2B ini...

San Francisco, United States51–200Artificial Intelligence, Manufacturing
Series BTotal funding$18.2BJun 2026
6
Perplexity AI

Perplexity is an AI answer engine that researches the open web in real time and delivers concise ...

San Francisco, United States201–500Artificial Intelligence
Venture RoundTotal funding$10.7BSep 2025
7
Cognition

AI software engineering company building Devin, an autonomous AI coding agent capable of planning...

San Francisco, United States51–200Artificial Intelligence, Developer Tools
Series ETotal funding$4.1BSep 2026
8
Lambda Labs

Lambda builds AI supercomputers and GPU clusters, combining NVIDIA hardware with liquid cooling f...

San Francisco, United States501–1000Artificial Intelligence, Infrastructure
Series ETotal funding$2.3BNov 2025
9
Harvey

Harvey is domain-specific AI for legal and professional services, streamlining contract analysis,...

San Francisco, United States51–200Artificial Intelligence, Legal Tech
Venture RoundTotal funding$2.2BSep 2026
10
Reflection

Reflection builds open-weight frontier AI models and research tools intended to make advanced int...

San Francisco, United States11–50Artificial Intelligence
Series BTotal funding$2.1BOct 2025
11
Baseten

Baseten provides an inference platform that lets AI teams deploy, operate, and scale custom and o...

San Francisco, United States51–200Artificial Intelligence, Cloud
Series FTotal funding$2.1BJun 2026
12
Thinking Machine Labs

Thinking Machines Lab develops AI research and products that help people customize AI for their u...

San Francisco, United States11–50Artificial Intelligence, Data & Analytics
SeedTotal funding$2.0BJul 2025
13
Motive

Motive builds technology to improve the safety, productivity and profitability of businesses that...

San Francisco, United States1001–5000Artificial Intelligence, Logistics
Growth EquityTotal funding$1.9BSep 2026
14
Scale AI

Scale AI provides high-quality data and full-stack technologies that power the world's leading AI...

San Francisco, United States201–500Artificial Intelligence, Data & Analytics
Series G+Total funding$1.6BJun 2025
15
Sierra

Sierra provides an enterprise conversational AI platform that lets businesses build trustworthy a...

San Francisco, United States51–200Artificial Intelligence, Conversational AI
Venture RoundTotal funding$1.6BMay 2026
16
World Labs

World Labs is a spatial intelligence AI company building Large World Models (LWMs) to perceive, g...

San Francisco, United States11–50Artificial Intelligence, Infrastructure
Series ATotal funding$1.2BFeb 2026
17
Together AI

Together AI provides a full-stack platform for production AI, including inference, fine-tuning, a...

San Francisco, United States201–500Artificial Intelligence, Cloud
Series CTotal funding$1.2BJul 2026
18
Recursive Superintelligence

Recursive builds self-improving AI systems to automate knowledge discovery using open-ended algor...

San Francisco, United States1–10Artificial Intelligence
SeedTotal funding$1.1BMay 2026
19
Flyr

FLYR is the data science company that leverages machine learning to create the next generation pr...

San Francisco, United States501–1000Travel & Hospitality, SaaS
Venture RoundTotal funding$1.1BSep 2025
20
Physical Intelligence

Physical Intelligence is building a foundation model for robotics, bringing general-purpose AI in...

San Francisco, United States11–50Artificial Intelligence, Robotics
Series BTotal funding$1.1BNov 2025
21
Replit

Replit provides an agentic software creation platform that helps people turn ideas into working a...

San Francisco, United States51–200Developer Tools, Artificial Intelligence
Series DTotal funding$1.0BMar 2026
22
Flapping Airplanes

Research-first AI lab pursuing data-efficient, brain-inspired model training approaches.

San Francisco, United States1–10Artificial Intelligence, Machine Learning
Series ATotal funding$1.0BOct 2026
23
Fluidstack

Fluidstack builds and operates data centers, combining hardware and software to deliver gigawatts...

San Francisco, United States51–200Artificial Intelligence, Cloud
Series ATotal funding$833.0MJan 2026
24
Cloudwalk

CloudWalk provides payment infrastructure and fintech products, including InfinitePay, for millio...

San Francisco, United States501–1000Payments, Artificial Intelligence
Series CTotal funding$824.8MNov 2021
25
Niantic

Augmented reality technology company and developer of Pokémon GO, Ingress, and location-based AR ...

San Francisco, United States501–1000Artificial Intelligence, Gaming
Series DTotal funding$770.0MNov 2021