Helicone
Acquired
What they do:
LLM Observability for Developers
Quick facts:
HQ: San Francisco, CA, United States
Top AI & Data Startups in California
This list has 1,550 startups and was last updated on Oct 15, 2026. 481 of them are hiring right now. Biggest hubs: San Francisco (1,471), Los Angeles (51), and San Diego (5). Largest teams: Cruise, Relativity Space, and Fivetran. Latest round: Safi Analytics raised $22.4M (Oct 14, 2026).
1,550 startupsPage 39 of 44
Rally Tax
Acquired
What they do:
AI-native tax platform to save $1T+ for Americans
Quick facts:
HQ: San Francisco, CA, United States
ScopeAI
Acquired
What they do:
Automatically extract valuable insights from customer service…
Quick facts:
HQ: Los Angeles, CA, United States
Intersect Labs
Acquired
What they do:
Collaborative data noteboook for business teams
Quick facts:
HQ: San Diego, CA, United States
Okay
Acquired
What they do:
Dashboards and actionable insights for high-performing engineering…
Quick facts:
HQ: San Francisco, CA, United States
Bandit ML
Acquired
What they do:
Bandit ML builds machine learning tools for e-commerce companies.
Quick facts:
HQ: San Francisco, CA, United States
Brewit
Acquired
What they do:
Conversational data analytics for every team
Quick facts:
HQ: San Francisco, CA, United States
Pincites
Acquired
What they do:
Close deals faster with AI for contract negotiation
Quick facts:
HQ: San Francisco, CA, United States
Remade
Acquired
What they do:
AI-native canvas for creative workflows.
Quick facts:
HQ: San Francisco, CA, United States
Hey Revia
Acquired
What they do:
Voice AI to automate complex phone calls for healthcare providers
Quick facts:
HQ: San Francisco, CA, United States
Blockspring
Acquired
What they do:
Automate data collection for spreadsheets and productivity tools.
Quick facts:
HQ: Los Angeles, CA, United States
Vogent
Acquired
What they do:
Build Voice AI Agents
Quick facts:
HQ: San Francisco, CA, United States
Nara
Acquired
What they do:
Answer 70% of your support and sales questions. Instantly
Quick facts:
HQ: San Francisco, CA, United States
Booth AI
Acquired
What they do:
Generative AI Photographer for E-Commerce
Quick facts:
HQ: San Francisco, CA, United States
Vocode
Acquired
What they do:
Open source Voice AI
Quick facts:
HQ: San Francisco, CA, United States
Speck
Acquired
What they do:
AI Notetaker that automates all your admin work
Quick facts:
HQ: San Francisco, CA, United States
TensorPool
Acquired
What they do:
Vercel For GPUs
Quick facts:
HQ: San Francisco, CA, United States
Nexa Labs
Acquired
What they do:
Implantable microchips and AI for cattle monitoring
Quick facts:
HQ: San Francisco, CA, United States
Opennote
Acquired
What they do:
The notebook that thinks with you.
Quick facts:
HQ: San Francisco, CA, United States
Amiato
Acquired
What they do:
The BI bridge for unstructured data. We automatically bridge the gap…
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HQ: San Francisco, CA, United States
Flutter
Acquired
What they do:
Flutter combined computer vision technology with the built-in webcams…
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HQ: Los Angeles, CA, United States
Hotspots
Acquired
What they do:
Real-time analytics (acq by TWTR, 2012)
Quick facts:
HQ: San Francisco, CA, United States
GazeHawk
Acquired
What they do:
Eyetracking using webcams.
Quick facts:
HQ: San Francisco, CA, United States
AdGrok
Acquired
What they do:
Easy SEM software. Acquired by Twitter in 2011.
Quick facts:
HQ: San Francisco, CA, United States
JustSpotted
Acquired
What they do:
Acquired by Google in 2011
Quick facts:
HQ: San Francisco, CA, United States
Statwing
Acquired
What they do:
Dead simple statistical analysis software. Like R or SPSS but easy to…
Quick facts:
HQ: San Francisco, CA, United States
Bop.fm
Acquired
What they do:
Canonical permalinks for songs.
Quick facts:
HQ: San Francisco, CA, United States
Framed Data
Acquired
What they do:
Predicted churn for enterprises. (Acquired by Block)
Quick facts:
HQ: San Francisco, CA, United States
Outbound
Acquired
What they do:
Create automated messages -- email, iOS/Android push, SMS and web…
Quick facts:
HQ: San Francisco, CA, United States
Penny
Acquired
What they do:
Penny makes keeping track of your finances as easy as having a…
Quick facts:
HQ: San Francisco, CA, United States
Tetra
Acquired
What they do:
AI notetaker for phone calls
Quick facts:
HQ: San Francisco, CA, United States
Plasticity
Acquired
What they do:
Natural language processing APIs for developers.
Quick facts:
HQ: San Francisco, CA, United States
Palifer
Acquired
What they do:
Predictive maintenance models for trains and heavy industry
Quick facts:
HQ: San Francisco, CA, United States
Mentum
Acquired
What they do:
AI-Powered Assistant for Procurement and Strategic Sourcing
Quick facts:
HQ: San Francisco, CA, United States
Dashdive
Acquired
What they do:
Break down AI and cloud costs by feature and customer
Quick facts:
HQ: San Francisco, CA, United States
DAGWorks Inc.
Acquired
What they do:
Open source tools & services for reliable AI Agents & AI Applications
Quick facts:
HQ: San Francisco, CA, United States