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Find 25 Series A startups building AI developer tools.
company | website | founders | headquarters | product | amount_raised | lead_investors | ai_dev_tools | raised_last_12mo | series_a | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Greptile1 | Daksh Gupta - Greptile CEO | prev: Engineer at 亚马逊云科技, Engineer at Qualcomm, Vaishant Kameswaran - Co-Founder, CTO @ Gre…3 | San Francisco, California, United States1 | AI code review agent that checks PRs for bugs and enforced coding standards across software organizations1 | $25M Series A, 2025-09-231 | Benchmark Capital (Eric Vishria)1 | match3 | match3 | match3 | ||
| 2 | E2B1 | Vasek Mlejnsky - Building cloud for AI Agents | prev: Workshop Speaker at AI Engineer, Co-founder & CEO at Devbook, Toma…3 | San Francisco, California, United States1 | Open-source cloud infrastructure and secure sandboxes for AI agents, enabling them to execute code and carry out complex…1 | $21M Series A, July 28, 20251 | Insight Partners1 | match3 | match3 | match3 | ||
| 3 | Coval1 | Brooke Hopkins - Founder @ Coval | ex-Waymo | prev: Tech Lead, Senior Software Engineer at Waymo, Software Engineer at G…1 | San Francisco, CA1 | Simulation, observability and labelling platform for AI voice and chat agents1 | $28M Series A, June 23, 20261 | Norwest1 | match2 | match2 | match2 | ||
| 4 | Datacurve1 | Serena Ge - Co-Founder, CEO of Datacurve | prev: Machine Learning Engineer at Cohere, Charley Lee - Co-Founder of Datacu…3 | San Francisco, California, United States1 | Platform providing high-quality coding datasets for training and evaluating large language models, using a 'bounty hunte…1 | $15,000,000 Series A, 2025-10-091 | Chemistry (Mark Goldberg)1 | match3 | match3 | match3 | ||
| 5 | Firecrawl1 | Eric Ciarla - Co-Founder @ Firecrawl (YC S22). Previously Mendable. | prev: Data Scientist at Ford Motor Company, Data E…3 | San Francisco, California, United States1 | Firecrawl - a web data extraction API/infrastructure for AI, providing web scraping, structured data extraction, JavaScr…1 | $14.5M Series A, Aug 19, 20251 | Nexus Venture Partners1 | match3 | match3 | match3 | ||
| 6 | Mem01 | Taranjeet Singh - Mem0 CEO | Memory for AI Agents | prev: Senior Software Engineer at Inclusys, Senior Software Engineer…3 | San Francisco, California, United States1 | Memory infrastructure platform for AI agents1 | $24M Series A, October 28, 20251 | Basis Set Ventures (Series A), Kindred Ventures (Seed)1 | match3 | match3 | match3 | ||
| 7 | Vellum1 | Akash Sharma - CEO at vellum | prev: Consultant at McKinsey & Company, Product Manager at Dover, Business Operations Lea…3 | New York, New York, United States1 | Enterprise development platform for building, testing and deploying mission-critical AI products1 | $20 million Series A, July 10, 20251 | Leaders Fund1 | match3 | match3 | match3 | ||
| 8 | Trigger.dev1 | Daniel P. - Co-founder, Trigger.dev | prev: Freelance Designer at Self-employed, Lead Designer at Solve, Lead Designer a…3 | London, England, United Kingdom1 | Open source platform for building AI agents and workflows in TypeScript1 | $16M Series A, 2025-12-181 | Standard Capital1 | match3 | match3 | match3 | ||
| 9 | Depot1 | Jacob G. - Co-founder and CTO of Depot | prev: Senior Software Engineer at Webflow, Software Engineer / Infrastructure C…2 | Beaverton, Oregon, United States1 | Depot CI - a software development platform with high-performance container image and continuous integration build tools1 | $10 Million Series A, Mar 11, 20261 | Felicis1 | match3 | match3 | match3 | ||
| 10 | CopilotKit1 | Atai Barkai - CEO at CopilotKit | Helping devs turn all UI into AI | prev: Research Assistant at UPenn's High Energy Phy…3 | Seattle, Washington, United States1 | Enterprise Agentic Frontend Stack for generative UI and agent-human collaboration1 | $27M Series A, May 5, 20261 | Glilot Capital, NfX, SignalFire1 | match3 | match3 | match3 | ||
| 11 | OpenObserve1 | Prabhat Sharma - Founder @ OpenObserve | Open source Observability | Helping engineering teams scale observability witho…2 | San Francisco, California, United States1 | Open-source observability platform for monitoring logs, metrics, and traces across software systems, featuring AI SRE, a…1 | $10M Series A, May 20261 | Nexus Venture Partners, Dell Technologies Capital1 | match3 | match3 | match3 | ||
| 12 | Namespace1 | Hugo Santos - Founder & CEO at Namespace Labs | prev: Software Engineer / Researcher at Instituto de Telecomunicações, S…2 | San Francisco, California, United States1 | Compute platform for code execution (CI/CD, developer workflows, and coding agents infrastructure)1 | $23 million (Seed and Series A combined) Series A, None1 | NEA1 | match3 | match3 | match3 | ||
| 13 | Corridor1 | Ashwin Ramaswami - CTO & Co-founder at Corridor | prev: Candidate for Georgia State Senate at Georgia State Senate, Tech…3 | San Francisco, California, United States1 | Agentic coding security management (ACSM) platform for AI-native software development1 | $25M Series A, March 20261 | Felicis1 | match3 | match3 | match3 | ||
| 14 | Escape1 | Tristan Kalos - Co-founder @ Escape • Meet me at RSAC and BSidesSF • Offensive security for the teams that are 100x outn…2 | San Francisco, California, United States1 | AI-native offensive security engineering platform (attack surface management, business-logic-aware DAST, and AI-driven p…1 | $18 million (€15.4M) Series A, March 20261 | Balderton Capital1 | match3 | match3 | match3 | ||
| 15 | Qurrent1 | Colin Wiel - Co-Founder and CEO @ Qurrent | AI Solutions | Multiple Exits, 1 IPO | prev: Co-Founder, Chairman and CTO at…3 | San Francisco, California, United States1 | Autonomous digital workforces that execute complex back-office operations across finance, supply chain, procurement, and…1 | $15 million Series A, 2026-03-121 | Cervin Ventures1 | match3 | match3 | match3 | ||
| 16 | Antithesis1 | Will Wilson - CEO at Antithesis | prev: Senior Software Engineer at FoundationDB, Product Manager at Coral Networks, LLC…2 | Vienna, Virginia, United States1 | Deterministic simulation testing platform for complex distributed systems1 | $105M Series A, 2025-12-031 | Jane Street1 | match3 | match3 | match3 | ||
| 17 | Prime Security1 | Matan Markovics - VP R&D @ Prime Security | prev: Co-Founder and CTO at Babel5, Development and Research at IDF, Co-Foun…2 | New York City, NY (also Tel Aviv)1 | Agentic Security Architect / Agentic Product Security Platform1 | $20M Series A, December 9, 20251 | Scale Venture Partners1 | match3 | match3 | match3 | ||
| 18 | Teleskope1 | Elizabeth Nammour1 | New York, New York, United States1 | Agentic Data Security Platform1 | $25 million Series A, October 31, 20251 | M131 | match2 | match2 | match2 | ||
| 19 | Relace1 | Preston Zhou - CEO of Relace | prev: Undergraduate Research Assistant at Caltech, Undergraduate Research Assistant at Ma…2 | San Francisco, CA, United States1 | Models and infrastructure to power software on demand, including small specialized language models (embed, rerank, and a…1 | $23M Series A, 2025-10-081 | Andreessen Horowitz (a16z)1 | match3 | match3 | match3 | ||
| 20 | Parasail1 | Mike Henry - CEO of Parasail - Bringing AI to everyone, everywhere | prev: Founder and CEO at Mythic, Inc., Interim Chie…3 | San Mateo, California, United States1 | AI Supercloud — an inference and training platform for deploying and scaling AI agents, aggregating global GPU compute r…1 | $32,000,000 Series A, April 15, 20261 | Touring Capital, Kindred Ventures1 | match3 | match3 | match3 | ||
| 21 | Sim1 | Emir Karabeg - Co-Founder and CEO at Sim | prev: Research at University of California, Berkeley, Waleed Latif - Co-Found…3 | San Francisco, California, United States1 | Open-source platform for building and running AI agent workflows, featuring a visual canvas interface for connecting fun…1 | $7,000,000 Series A, 2025-11-131 | Standard Capital1 | match3 | match3 | match3 | ||
| 22 | Riff1 | Trygve Karper - CEO @ Riff.ai | Delivering industrial AI agents | prev: Senior Research And Development Engineer at Schl…3 | Oslo, Norway1 | No-code/low-code AI platform for building internal business applications (AI-powered apps, automations, and agents using…1 | $16M Series A, October 23, 20251 | Northzone1 | match3 | match3 | match3 | ||
| 23 | Cline1 | Saoud Rizwan - Founder/CEO at Cline2 | San Francisco, California, United States1 | Open-source AI coding agent integrated into IDEs (e.g., VS Code)1 | $32M (combined Seed and Series A) Series A, July 31, 20251 | Emergence Capital, Pace Capital1 | match2 | match3 | match3 | ||
| 24 | Daytona1 | Ivan Burazin - Co-Founder & CEO at Daytona | prev: Founder & Managing Director at Procedo, IT Consultant at In Capita, F…3 | New York, New York, United States1 | AI agent infrastructure providing programmatic, composable sandboxed computers for AI agents1 | $24M Series A, February 20261 | FirstMark Capital1 | match3 | match3 | match3 | ||
| 25 | Kernel1 | Catherine Jue - Co-Founder at KERNEL | prev: Senior Partner Engineer at Cash App, iOS Developer & Professional Hackathon…3 | San Francisco, California, United States1 | Browsers-as-a-service platform providing cloud browser infrastructure for AI agents1 | $22 million (Seed and Series A), October 20251 | Accel1 | match3 | match3 | match3 |
Research
Ask for a cohort. Get a cited table.
Describe who you're looking for. Agents work through filings, job boards, event pages, and the open web, and come back with a table where every cell shows its source.
Build a full profile of Peter Steinberger.
PS
Peter Steinberger
People
A full profile from one name.
Start from a name. Agents find the person's accounts on LinkedIn, GitHub, and X, then piece together where they've worked, what they've built, and what they've written.
Research linear.app, stack and org included.
Linear
At Linear, we are on a mission to bring magic back to software.
active · Series C · San Francisco, California, United States
Software Development, Technology, Information and Internet, Technology, Information and Media
Linear is a San Francisco–rooted, fully remote product development platform founded in 2019 by Karri Saarinen, Jori Lallo, and Tuomas Artman. It combines high-performance issue tracking with projects, cycles, roadmaps, intake, insights, and a growing agent platform (Linear Agent, Loops, Coding Sessions, Triage Intelligence). The company has raised about $134M across seed through Series C — Seed and Series A led by Sequoia, Series B and Series C led by Accel — and was valued at $1.25B at the June 2025 Series C. Linear says it has been profitable since 2021 with negative lifetime burn. Customers include OpenAI, Cursor, Coinbase, Ramp, Automattic, and Cash App. The team is ~270 people and is hiring aggressively across product and GTM.
Total funding$134.2M
Last roundSeries C · $82MJun 10, 2025 · Led by Accel
Valuation$1.3B
Investors40
Employees201-500
Founded2019
Monthly visits7.2M22.64% MoM
Company info
Legal nameLinear Orbit, Inc.
Typeoperating_startup · For Profit
Business modelFreemium SaaS with tiered pricing: Free ($0), Basic ($10/user/month), Business ($16/user/month), and Enterprise (custom). Monetizes through per-user pricing with feature tiers and add-ons. · Product-led growth with enterprise sales; freemium + AE/GTM hiring
Latest rounds
Series C - Linear · $82M · Jun 10, 2025 · Led by Accel
Series B - Linear · $35M · Sep 14, 2023 · Led by Accel
Series A - Linear · $13M · Dec 8, 2020 · Led by Sequoia Capital
Founders & leadership
Notes
- Linear is a product development system for issue tracking, project planning, and AI-assisted workflows, purpose-built for modern software teams and coding agents.
- Founded in 2019 by Karri Saarinen (CEO), Jori Lallo (CPO), and Tuomas Artman (CTO); operates as a fully remote company across North America and Europe.
- Raised a $4.2M seed in November 2019 led by Sequoia Capital, followed by a $13M Series A in December 2020 also led by Sequoia.
- Raised a $35M Series B in September 2023 led by Accel (Miles Clements), with Sequoia, 01 Advisors, and operator angels participating.
- Closed an $82M Series C in June 2025 led by Accel at a $1.25B valuation (primary and secondary), bringing total funding to about $134M with Sequoia and 01A continuing to invest.
- Company states it has been growing and operating profitably since 2021, with more cash on hand than capital raised from investors (negative lifetime burn).
- Named customers on linear.app include OpenAI, Cursor, Coinbase, Ramp, Automattic, Brex, Scale, Cash App, Vercel, Perplexity, and Klaviyo.
- Pricing is freemium SaaS: Free, Basic at $10/user/month, Business at $16/user/month, and custom Enterprise tiers.
- Headcount is about 270 employees (201-500 range) with strong growth: roughly +69% YoY and +155% over two years per LinkedIn enrichment.
- Currently hiring across ~31 open roles concentrated in GTM and Product (Ashby ATS), spanning North America, Europe, London, and Australia.
- Recent product momentum (July 2026) centers on Linear Agent features: Loops recurring workflows, Claude Opus in Coding Sessions, document editing by Agent, and pooled AI seat credits for Business/Enterprise.
Frontend7
Backend14
Natalie Strattonin/natalie-stratton-4510888bOperationsExecutive Assistant to Chief Executive Officer
Natália Moreira Zanetti Hortain/nat%C3%A1lia-moreira-zanetti-horta-52232a371GTMRepresentante de desenvolvimento de vendas
Companies
The company, its stack, and its org.
Who funds it, what it ships, who works there. Agents work out the tech stack behind the domain and build the org chart one person at a time.
Frequently asked questions
What is Autumn?
People research as a primitive. Autumn resolves fragmented information on the web into an index of every person in the world: relationships, work history, contact info, and digital footprint. Agents query it for whatever you need, from a prospect list to a background check.
How is Autumn different from ZoomInfo, Clay, or Apollo?
Those are databases and workflow tools. You get the rows they already have. Autumn runs live research at request time: agents read news, filings, registries, code, job posts, and social the way an analyst would, then assemble the answer.
You also get what no database has indexed yet. Agents watch incorporation filings, event pages, and launch pages, so new companies show up in Autumn first.
Who is Autumn built for?
Sales teams researching accounts, recruiters sourcing candidates, investors mapping markets, and risk teams screening people and companies. Anyone who needs deep research at scale instead of another static list.
Where does the data come from?
The open web: incorporation filings, LinkedIn, X, GitHub, event pages, news, code, and company sites. Every cell links back to its sources, so you can check any claim in one click.
Can I use Autumn programmatically?
Yes. The same agents are available over the API. Find companies, enrich rows, build profiles, or run screening from inside your own product.
Do I need a credit card to try it?
No. Sign in and run your first research task on the free tier.