T
TypeSafe AI
Core neolabAI lab building machine-native models that return typed decisions to software, starting with Jev
Raised, confirmed$910M2 confirmed rounds
Valuation, confirmed$7.5B9 Oct 2026
Valuation, reported—no open report
Founded2024San Francisco, CA, US
Key facts
| Field | Value | Source · checked |
|---|---|---|
| Classification | Core neolabResearch lab building machine-native AI models (Jev) founded in 2024 by a former OpenAI researcher; $870M Series A at a $7.5B valuation led by Andreessen Horowitz (Oct 2026). | |
| Founded | 2024 | |
| Headquarters | San Francisco, CA, US | |
| Founders | Diogo Almeida, Erik Gafni, Sasha Sheng | |
| Website | typesafe.ai | typesafe.ai TypeSafe AI is an AI lab building machine-native intelligence infrastructure for automation, designed to make decisions within software.checked 9 Nov 2026 |
| Careers | jobs.ashbyhq.com17 open roles on 9 Nov 2026 | typesafe.aichecked 9 Nov 2026 |
| Profiles and work | X @typesafeaiLinkedInDocs | How links are checkedchecked 10 Nov 2026 |
Funding rounds
TypeSafe AI has raised $910M in rounds confirmed by the company, a regulator or two independent outlets. Status rules: methodology.
| Date | Round | Amount | Valuation | Investors | Status | Source · checked |
|---|---|---|---|---|---|---|
| 9 Oct 2026 | Series A | $870M | $7.5B | Lead: Andreessen Horowitz; Sequoia, DCVC, angel investors | Confirmed | |
| 15 Sep 2026 | Seed | $40M | — | Lead: DCVC | Confirmed | Tech Startups TypeSafe AI has emerged from stealth with $40 million in seed funding and an ambitious pitch+2 more sourceschecked 9 Nov 2026 |
Notes on these rounds
- 9 Oct 2026 Series A: A16z general partner Martin Casado joins the board, per the company post.
- 15 Sep 2026 Seed: Reported alongside the company's emergence from stealth on 15 Sep 2026; DCVC led the seed round.
People
| Name | Role | Before | Now | Source · checked |
|---|---|---|---|---|
| Diogo AlmeidaXScholarSite | Co-founder & CEO | OpenAI (Researcher) | Current | typesafe.ai At OpenAI, I helped build the methods that made language models useful at following instructions and talking with people.checked 9 Nov 2026 |
| Erik GafniXLinkedInScholarSite | Co-founder | — | Current | techcrunch.com TypeSafe was co-founded in 2024 by former Meta research engineer Sasha Sheng and Erik Gafni, an engineer and entrepreneur.checked 9 Nov 2026 |
| Sasha ShengLinkedIn | Co-founder | Meta (Research engineer) | Current | techcrunch.com TypeSafe was co-founded in 2024 by former Meta research engineer Sasha Sheng and Erik Gafni, an engineer and entrepreneur.checked 9 Nov 2026 |
Professional facts from public sources only. How people records are handled.
What it has shipped
| Name | Kind | Date | Open weights | Source · checked |
|---|---|---|---|---|
| Jev | model | 15 Sep 2026 | No |
Latest posts on X
The most recent posts from @typesafeai, the X account of TypeSafe AI, quoted as posted. Replies and reposts are left out. How posts are selected.
oh so everybody vibecoding their own app is easy now? just a slop cannon away from everything you want in life? prove it! hypership your dreams into reality today
so we heard you like decision models but how do you make reliable decisions against gnarly data with a model? you don't: reliability requires code, and so reliable decisions are made by composing reliable judgments in code Jev makes reliable judgments
what did they mean by this
checked 10 Nov 2026
Commonly cited, checked
Figures and statements about TypeSafe AI that circulate in lists and summaries, and what the sources support.
| Claim | Finding | Source |
|---|---|---|
| Founded 2025 | TechCrunch and Tech Startups report the company was founded in 2024. | techstartups.com The San Francisco startup was founded in 2024 by Diogo Almeida |
| $870M Series A on 9 Oct 2026 at $7.5B | Confirmed by the company's post and TechCrunch: $870M at a $7.5B valuation led by Andreessen Horowitz. A $40M seed led by DCVC was announced on 15-16 Sep 2026. | techcrunch.com has raised $870 million at a $7.5 billion valuation |
| Series A investors commonly cited as Andreessen Horowitz and Sequoia | Series A led by Andreessen Horowitz with Sequoia and DCVC; seed led by DCVC. | techcrunch.com The round was led by Andreessen Horowitz, with participation from Sequoia and existing investor DCVC. |
Work at TypeSafe AI, or see something wrong? Update this profile with a public source. How corrections work.