AI/ML startups in San Francisco Bay Area

Cognition

San Francisco

The company is an applied AI lab that builds end-to-end software agents and collaborative AI teammates, enabling engineers to focus on more interesting problems and empowering teams to pursue ambitious goals; it markets Devin as the first A

Poolside

San Francisco

Poolside is building the world's most capable AI for software development, focusing on distributed training and inference of large language models for source code generation, with a mission to unlock developers' potential through AI for sof

The Bot Company

San Francisco

The Bot Company builds household robots to give people back time, pursuing in-house AI, software and hardware. It plans to deploy millions at home before expanding, and has raised $300M, including a $150M Greenoaks-led round, valuing the co

Decagon

San Francisco

Decagon is a leading conversational AI platform delivering concierge customer experiences with AI agents across chat, email, and voice in any language. It serves brands like Hertz, Eventbrite, Duolingo, and Oura and is backed by Accel and A

Decart

San Francisco

Decart provides efficient systems-level AI infrastructure that dramatically accelerates training and inference of the largest generative models, enabling Decart to train its own foundational interactive models and offer real-time access to

LMArena

San Francisco

LMArena, created by UC Berkeley researchers, is an open platform for accessing and comparing leading AI models, where users rate responses and help build a public, real-world leaderboard to increase transparency in AI progress.

Rhoda AI

Palo Alto

Rhoda AI develops general-purpose robots powered by frontier AI models for real-world tasks in logistics, manufacturing, and beyond; backed by over $225 million from top-tier investors and building a world-class team to advance technology a

Listen Labs

San Francisco

Listen is an autonomous market researcher that uses AI to design interviews, recruit participants, and analyze responses, delivering insights in hours rather than weeks, 24/7. Trusted by Google, Microsoft, SKIMS, Nestlé, and hundreds of ent

Bretton AI

San Francisco

Bretton AI (formerly Greenlite AI) builds AI agents for financial crime compliance, helping banks and fintechs automate AML and KYC work.

David AI

San Francisco

David AI builds audio datasets through R&D; founded in 2024 by former Scale AI engineers, it counts FAANGs and AI labs among customers and raised a $50M Series B from Meritech, NVIDIA and others, achieving seven-figure revenue in six months

Edison Scientific

San Francisco

Edison Scientific, spun out from FutureHouse in 2025, accelerates scientific discovery by building and commercializing AI agents for science, pursuing an AI Scientist to scale autonomous research and tackle challenges such as drug developme

Stand Insurance

San Francisco

The company protects and insures homes against wildfire and hurricane risks by applying physics and AI to model true property risk, enabling more homes to be insurable.

Inception

Palo Alto

Inception develops diffusion-based LLMs (dLLMs) that generate answers in parallel, delivering up to 10x faster, more efficient, best-in-class quality. It pioneered diffusion in language, launched the first commercially available dLLMs in 20

Artisan

San Francisco

Artisan builds AI employees called Artisans and aims to replace the SaaS stack with a single integrated platform, starting with outbound sales; it consolidates every sales SaaS into one platform, framing it as next Industrial Revolution and

Augment Code

Palo Alto

The company aims to augment developers rather than replace them, restoring joy to software engineering by keeping engineers in flow. It builds AI programming tools with radical contextual awareness of a codebase to benefit teams.

Windsurf

Mountain View

Windsurf, formerly Codeium, is a leader in AI developer tools serving hundreds of thousands of users and Forbes AI 50 recognition; it was inducted into JPMC Hall of Innovation and announced Series C after Jensen Huang cited its CES impact.

Noon

San Francisco

Noon (formerly Weaver) is an AI-native product design tool that links design and code so product teams can go from idea to shipped interface.

Counsel Health

San Francisco

Counsel is building an AI-driven healthcare practice to scale care delivery and provide rapid, personalized medical advice, leveraging partnerships with leading healthcare organizations and collaborative clinician–AI models; founded 2023, r

Delve

San Francisco

Delve is an AI-native compliance company helping 700+ fast-growing firms achieve SOC 2, HIPAA, ISO, GDPR, and other standards in days, not months; trusted by Lovable, Bland, and Wispr Flow, and building an AI-native platform to automate com

Federato

Palo Alto

Federato is the only AI-native platform that spans the full policy lifecycle, covering the entire policy process from start to finish. It claims to change how insurance work is done.

E2B

San Francisco

E2B is a Series A startup building the next hyperscaler for AI agents. It has seven figure revenue and has raised over $32M from investors including Insight Partners, serving Perplexity, Hugging Face, Manus, and Groq in San Francisco and Pr

Casca

San Francisco

Casca is building AGI for banking, replacing legacy systems with AI-native tech that automates 90% of manual work. It emphasizes responsible AI with human-in-the-loop monitoring and is backed by Y Combinator, Peterson Ventures, The Sarah Sm

Alembic

San Francisco

Alembic provides causation analytics on proprietary data at scale, answering questions generic AI cannot. It serves Fortune 500 clients including Nvidia, Delta Air Lines, Mars; it operates one of the world's fastest private supercomputers a

Wordware

San Francisco

Wordware offers a web-hosted IDE that lets non-technical domain experts collaborate with AI engineers to build task-specific AI agents, treating prompting as a programming language for natural language programming and agent orchestration.

AfterQuery

San Francisco

AfterQuery builds datasets and experimentation to advance frontier LLM and AI-agent workflows, constructing complex data-infrastructure for agentic and hard-reasoning tasks. It partners with five AI labs and is YC's infrastructure partner, led by teams from top banks and quant firms.

Judgment Labs

San Francisco

Judgment Labs provides infrastructure for Agent Behavior Monitoring (ABM) to observe post-deployment autonomous-agent behavior at scale, serving hundreds of teams. It has raised over $30 million from notable investors and positioned as a le

FurtherAI

San Francisco

FurtherAI is a domain-specific AI company for the insurance industry, helping insurers, reinsurers, MGAs, and brokers drive better decisions at scale. Backed by a16z, Y Combinator, Nexus, and Converge, it supports customers writing over $15

Unify

San Francisco

Unify is an AI-first go-to-market platform that treats growth as a science, powering pipeline for leading teams such as Airwallex, Cursor, Perplexity, Together AI, and Guru. Founded Jan 17, 2023 by Austin Hughes and Connor Heggie, with a Li

Moonlake

San Francisco

The company builds multimodal reasoning models, developing AI systems that can reason across multiple modalities and integrate diverse data types. This focus positions it in a technically advanced area of AI development.

Poke.com

Palo Alto

Poke develops an AI assistant for messaging platforms, highlighting its early-stage, fast-growing status and a founding team of engineers from leading quant shops and university labs, underscoring a strong technical pedigree.

Indent

San Francisco

Indent is a platform for large engineering teams, used for incident response, code review, and data analysis with minimal setup. It provides a cloud AI software engineer that handles the entire job, including real-world tasks like analyzing

Mem0

San Francisco

Mem0 provides a universal, self-improving memory layer for LLM applications, enabling personalised AI experiences while reducing costs and boosting user delight. It markets itself as "The memory layer for Personalized AI."

Sauron

San Francisco

Sauron provides residential security via autonomous robots and cars, led by alumni of Zipline, Tesla, Apple, and Google. Incubated by Kevin Hartz and Atomic, it has raised rounds totaling at least $40M from investors including A*, 8VC, and

Alex (formerly Apriora)

San Francisco

Alex AI builds the future of hiring with an autonomous recruiter that conducts real-time video interviews, asking employer-selected or job-based questions and personalized follow-ups to speed hires and improve signals; it supports thousands

Automat

San Francisco

Automat is a generative AI platform that creates and scales end-to-end automations, redefining Enterprise AI Agents, RPA, and Intelligent Document Processing; it serves some of the world's largest companies and claims 10x speed and lower co

Archil

San Francisco

Archil connects AI applications to data resources, including model training, agents, and sandboxes, enabling data access for AI development and experimentation. It positions itself as the connector between AI tools and the data they require

Browser Use

San Francisco

The company specializes in animating web agents, bringing them to life as living entities on the web.

ComfyUI

San Francisco

ComfyUI is a San Francisco-based, open-source, node-based engine for generating visual AI content, billed as the world’s leading visual AI platform with a modular system and a community of millions of users, 60k GitHub stars, and thousands

Phonely

San Francisco

Phonely develops voice AI technology to improve customer support and enable doctors to see more patients, while reducing hold times. It positions itself as a leader in intelligent, scalable customer communication and aims to redefine how bu

Eigen

San Francisco

Eigen is building a consumer social company focused on peer-like connections rather than an assistant, aiming to redefine social experience with intuitive product design and human-centered interactions.