All startups in San Francisco

WAYLINE

San Francisco

Wayline provides 24/7 support for property managers, serving as a dependable, around-the-clock partner in property management.

Helicone

San Francisco

Helicone is an open-source observability platform for LLM applications, delivering monitoring, optimization, and reliability tools to productionize AI systems. With ~4,000 GitHub stars, a thriving community, 20% MoM growth, and SOC 2 and GD

Stably AI

San Francisco

Stably AI focuses on AI-powered QA testing to help teams deliver software faster. Founded by experts who built testing infrastructure at Google and ML systems at Uber, it positions itself as a leader in AI-powered QA testing.

Toothy AI

San Francisco

Toothy AI automates back-office operations for dental clinics using large language models, led by founders with proven AI-enabled B2B track records (Chen’s SoftBank-backed $1M ARR AI email solution; Kerrigan’s pre-ChatGPT LLM campaign tool)

JustAI

San Francisco

JustAI is a marketing technology company that uses AI to enable 1-to-1 hyper-personalized messaging and continuous always-on testing, reducing operational overhead and accelerating rapid marketing experimentation by moving away from traditi

Origami

San Francisco

The company builds vertical AI agents to handle sales research and develops custom AI web agents. Co-founded by Finn Mallery and Kenson Chung, who previously served as CTO of an enterprise sales platform with $1B+ revenue clients; partnersh

Undermind

San Francisco

Undermind is an AI-powered research agent used by thousands of experts, including top pharma R&D firms and university libraries. Described as the most intelligent science search and synthesis engine, it aims to reinvent research by augmenti

Jiga

San Francisco

Jiga builds a digital, automated, data-driven platform that streamlines procurement of manufactured parts directly from vetted suppliers, connecting buyers with trusted manufacturers to transform traditional manufacturing sourcing.

Terradot

San Francisco

Terradot, a San Francisco Bay Area public-benefit MRV platform, uses ground truth sampling, remote sensing, and AI to measure soil carbon at scale for carbon removal, focusing on emerging economies; backed by $58.2M from investors and 300,0

Constant

San Francisco

Constant is a private credit investment platform focused on private credit investments.

Lapel

San Francisco

Lapel builds data infrastructure and tools that help customer-facing teams understand every customer and act on insight at scale, pursuing hospitality at scale by unifying context and coordinating action.

Faction

San Francisco

The company builds autonomous AI agents that automate $2T of industrial goods through the supply chain, processing orders, generating quotes, and making inventory decisions without human intervention; it operates without users or human-in-t

Patterns

San Francisco

Patterns aims to make data analysis accessible by using natural language processing and AI to analyze data, aiming to simplify analytics and transform business intelligence, with next-gen financial analysis and AI agents for reporting; tech

Operant AI

San Francisco

Operant AI is a cybersecurity leader securing AI and MCP across APIs, Kubernetes, LLMs, and agents. Gartner recognizes it in 2025 Market Guides for AI TRiSM and API Threat Protection, and it holds a Tech Ascension Award for Cloud Security.

Luthor

San Francisco

Luthor is the first AI-native compliance firm for RIAs and broker-dealers, delivering a full-stack program that automates SEC, FINRA, and FinCEN compliance by blending purpose-built LLMs with human expertise (including former SEC attorneys)

Sample Healthcare (YC W24)

San Francisco

Sample Healthcare is a profitable San Francisco-based healthcare AI company backed by notable investors including Kulveer Taggar, Zack Kanter, Homebrew Ventures, Y Combinator, and alumni from Retool, Stripe, Ambience Healthcare, and Watersh

Roforco

San Francisco

Roforco builds viral AI consumer apps and games, with seven titles reaching over 100 million users and 10.2 million peak MAU. It maintains a community (100k+ TikTok followers, 64k+ Discord) and is founded by two ex-YC founders with Meta/Sna

ZeroEntropy

San Francisco

ZeroEntropy is a B2B software and services infrastructure company focused on AI-driven information retrieval over complex unstructured data. With a two-person founding team and Y Combinator Winter 2025 participation, it combines mathematics

Embedder

San Francisco

Embedder develops a coding agent for firmware development in embedded systems, enabling writing and testing firmware on real hardware with connections to physical tools. It indexes hardware documentation to provide hardware-specific context

AI Insurance

San Francisco

AI Insurance offers a platform for SMB insurers to run all business processes, aiming to do for SMB insurance what Salesforce did for SMB sales, targeting 10,000+ firms and $238B in admin waste, to digitize and automate claims and underwrit

Ello

San Francisco

Ello is an AI-powered education company aiming to improve literacy and learning outcomes for children and close educational gaps; backed by investors after YC W20 and a Series A, it pursues building the world’s first complete AI teacher for

Workplay Ventures

San Francisco

Mark Pincus Family Office, the investment vehicle of Zynga founder Mark Pincus, pursues diversified asset-class investments with emphasis on AI/ML, gaming, social networks/platforms, and web3, backed by a lean team (one analyst, a controlle

Emergent

San Francisco

Emergent enables anyone to build production software by describing requirements in natural language. Founded by Mukund Jha and Madhav Jha, it attracted 700,000 users and $10M ARR in two months, among fastest-growing AI companies, serving en

Synth

San Francisco

Synth helps agent developers maintain and improve their AI software by identifying problems and fixing them with changes to scaffolding code, prompts, and models. It builds Research Engineering Agents and focuses on advancing AI agent devel

Graphite

San Francisco

Graphite is a Vertical AI Growth Agency that drives sustainable revenue growth through SEO, content, and AEO, serving clients such as Webflow, Notion, MasterClass, and Captions.

Woz

San Francisco

Woz helps non-technical founders turn ideas into scalable software by combining expert engineering, business tools, and go-to-market support, bridging AI-generated code with real-world growth and accelerating the path from concept to market

Relling

San Francisco

Relling develops data and infrastructure for world models, building advanced datasets to power world-models for humanoid robots and AR systems.

Stratus Aviation

San Francisco

Stratus Aviation, a YC-backed aviation tech startup, is building an intelligence layer for airport operations by converting live ATC radio, ADS-B, and sensor data into real-time situational awareness, and it participated in Y Combinator bat

Bunkerhill Health

San Francisco

Bunkerhill Health translates AI algorithms from leading research institutions (Stanford, Harvard, Johns Hopkins) into clinical use, bridging academic innovation and patient care. It markets a scalable AI healthcare solution and invites cust

Benchify

San Francisco

Benchify builds a reliability layer for AI-generated code, ensuring dynamic builds and self-healing pipelines so AI-powered software runs reliably and securely without human babysitting. Founded by Juan Castaño and Max von Hippel.

Fizz

San Francisco

Fizz is a fintech and #1 money app for young adults, helping users build credit and manage money. Backed by Kleiner Perkins, SV Angel, Y Combinator, and the founders of eight Unicorns, it serves students at 300+ universities from NYC.

Artificial Analysis

San Francisco

Artificial Analysis is an AI benchmarking and insights firm that helps labs and enterprises understand AI capabilities and shape strategies, serving as go-to authority for labs, enterprises, media, and policymakers; benchmarks are trusted b

ThirdLayer

San Francisco

ThirdLayer, behind Dex, reimagines the browser as an intelligent workspace with Dex, the AI Browser Copilot. Backed by seven-figure funding from top-tier investors, it has a small, fast-moving team and aims to solve how humans and computers

Agtonomy

San Francisco

Agtonomy is an AI and software services company specializing in intelligent automation for agriculture, turf, and beyond, with partnerships with leading equipment manufacturers; its platform is embedded into industrial machinery to enable a

Rinse

San Francisco

Rinse is an early, well-funded startup building the One Medical for dental to redesign the dental industry from the ground up, backed by investors such as Y Combinator, Optum Ventures, PJC, Global Founders Capital, and Liquid 2, among other

Composite

San Francisco

Composite, formerly PostEvent, is a cybersecurity company building autonomous systems to mitigate cyber adversaries and automate security alert responses, led by Yang Fan Yun and Charlie Deane, aiming to become the action layer for security

Taskade

San Francisco

Taskade provides a real-time collaboration platform for remote teams, offering task lists, notes, mind maps, and integrated team chat in a single tool, positioning itself as the unified workspace for remote workers and distributed teams.

Cargo

San Francisco

Cargo redefines go-to-market execution by making teams leaner, faster, and engineer-driven, replacing SDR-heavy models with a hybrid manual-automation approach that enables full-cycle AEs. Its platform builds and scales AI-powered workforce

Conductor

San Francisco

Conductor, based in San Francisco, has a three-person in-person team including Omid and is building the first AI orchestrator; backed by Silicon Valley investors to sustain operations through rough patches.

RunRL

San Francisco

RunRL (X25) is a San Francisco–based reinforcement learning as a service provider delivering on-demand RL capabilities to B2B software and services infrastructure companies, operated by a three-person team led by founders Andrew Gritsevskiy