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.
October 20265
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.
September 20265
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.
Sep 14, 2026TypeSafe Python SDK initial public releaseSDK release
TypeSafe published the first public version of its Python SDK (typesafe-sdk) a day before Jev's launch.
Sep 11, 2026TypeSafe JavaScript SDK initial public releaseSDK release
TypeSafe published the first public version of its JavaScript and TypeScript SDK (@typesafe-ai/sdk) ahead of Jev's launch.
* 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