TypeSafe AI
AI lab building System One Models: machine-native models that return typed, calibrated decisions for software to act on instead of generating text. Maker of Jev, a fast, low-cost decision model for classification, routing, scoring and verification.
Key stats
- $910M
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- 10
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- 2
- 3
- Oct 10, 2026
- Corporate
- 20 employees
- 10 open roles
- 1M users
Recent releases
Oct 10, 2026TypeSafe AI open roles snapshotOpen roles
TypeSafe AI's Ashby jobs board listed 10 open roles, all at its San Francisco office, including Members of Technical Staff, a Product Manager, a Founding Recruiter and a Founding Marketer. One listing is a tongue-in-cheek six-week contract role.
Oct 9, 2026TypeSafe AI team of just over 20 peopleEmployee count
Press coverage of the Series A described TypeSafe AI as having a team of just over 20 people. Approximate figure from secondary reporting, not a company disclosure.
Oct 9, 2026Jev surpasses 1 million usersUser count
TypeSafe AI said Jev surpassed one million users within days of launch and is used by about a third of Fortune 500 companies, which it declined to name. Company-reported figures, not independently verified.
Oct 9, 2026Martin Casado joins TypeSafe AI boardLeadership change
Andreessen Horowitz general partner Martin Casado joined TypeSafe AI's board as part of the company's Series A.
Oct 9, 2026TypeSafe AI raises $870M Series A led by Andreessen HorowitzFunding round
TypeSafe AI announced an $870 million Series A led by Andreessen Horowitz, with participation from Sequoia Capital, existing investor DCVC and angel investors, less than a month after launching Jev.
Sep 24, 2026TypeSafe AI reported in talks to raise $1B+ at $10B+ valuationNews
The Information reported that TypeSafe AI was discussing a round of $1 billion or more, with some investors offering to invest at a valuation above $10 billion, about ten days after it left stealth. The round later closed at $870 million and a $7.5 billion valuation.
Sep 15, 2026TypeSafe AI launches Jev, its first System One ModelModel release
After two years in stealth, TypeSafe AI released Jev in early access: a decision model that returns typed outputs with calibrated probabilities instead of text. TypeSafe prices it at $0.042 per million input tokens with free output, and claims up to 193.6x faster and 444.6x cheaper than frontier LLMs on its own workflow evals.
Sep 15, 2026TypeSafe AI raises $40M seed led by DCVCFunding round
TypeSafe AI emerged from stealth with a $40 million seed round led by DCVC, announced alongside the launch of its first model, Jev.
Upcoming
Nothing scheduled.
AI valuation history
Models
Platforms & products
| Name | Type | Category | Launched | Status |
|---|---|---|---|---|
| TypeSafe API | Platform | API | Sep 2026 | active |
| TypeSafe Python SDK | Product | SDK | Sep 2026 | active |
| TypeSafe JavaScript SDK | Product | SDK | Sep 2026 | active |
Sources
- Oct 10, 2026 · TypeSafe AI open roles snapshotTypeSafe AI (Ashby jobs board)
- Oct 9, 2026 · TypeSafe AI team of just over 20 peopleKuCoin News (relaying Series A coverage)
- Oct 9, 2026 · Jev surpasses 1 million usersBloomberg
- Oct 9, 2026 · Martin Casado joins TypeSafe AI boardTypeSafe AI
- Oct 9, 2026 · TypeSafe AI raises $870M Series A led by Andreessen HorowitzTypeSafe AI
- Sep 24, 2026 · TypeSafe AI reported in talks to raise $1B+ at $10B+ valuationDigital Today (citing The Information)
- Sep 15, 2026 · TypeSafe AI launches Jev, its first System One ModelTypeSafe AI
- Sep 15, 2026 · TypeSafe AI raises $40M seed led by DCVCSacra
- Sep 14, 2026 · TypeSafe Python SDK initial public releaseTypeSafe AI
- Sep 11, 2026 · TypeSafe JavaScript SDK initial public releaseTypeSafe AI
* Market cap / valuation. Company values are AI-attributed: the latest market cap or valuation × the share attributed to AI (100% for pure AI companies). Methodology