TypeSafe AI, which builds AI models designed to be called by software rather than by people, has raised $870m in a Series A round led by Andreessen Horowitz (a16z). The round values the San Francisco company at $7.5bn. Bloomberg first reported the deal on 9 October 2026, and TypeSafe and a16z confirmed it, according to Dealroom.
Sequoia Capital took part, along with existing investor DCVC and a group of angel investors. Martin Casado, a general partner at a16z, is joining TypeSafe's board.
The Series A came about three weeks after TypeSafe left stealth on 15 September with a $40m seed round led by DCVC at a post-money valuation of about $200m, Crypto Briefing reported.
“Call it the Jev-ons paradox: make intelligence cheap enough to call anywhere, and it gets called everywhere.”Jennifer Li, Sarah Wang, Martin Casado, Marc Andreessen and Ben Horowitz, Andreessen Horowitz
What TypeSafe AI does
TypeSafe's first model, Jev, answers what the company calls typed questions. Instead of writing text that a program must then parse, it hands a decision, such as a choice, a score or a probability, straight to code as a typed value. a16z described Jev as the first of a new class of 'System One' models, built to make quick, instinctive judgments inside software.
In its post on the deal, a16z said Jev costs roughly 1/100 to 1/500 as much as frontier models and runs about 100 times faster on classification tasks at comparable accuracy. It said the model generated 1 trillion tokens in its first three days. Crypto Briefing reported response times under 100 milliseconds.
The company says about a third of Fortune 500 companies use Jev; a16z put the share at 25%. Neither named the customers. Crypto Briefing reported that Jev passed one million users within days of its launch video spreading online.
TypeSafe was founded in 2024, according to Crypto Briefing. Diogo Almeida is chief executive, and the leadership team includes chief technology officer Erik Gafni and chief operating officer Sasha Sheng.
Who invested
The a16z announcement was signed by Jennifer Li, Sarah Wang, Martin Casado, Marc Andreessen and Ben Horowitz. They argued that AI has so far mostly helped people write ordinary software faster, and that the bigger opportunity is to build model intelligence into software itself at a cost that fits normal software economics.
Matt Ocko of DCVC, which led the seed round, said the two rounds took the company's valuation from roughly $200m to $7.5bn, Dealroom reported.
What the money is for
TypeSafe plans to widen Jev's capabilities, build more machine-native models, expand the infrastructure developers use to run Jev at larger scale and add features for big organisations, such as security, reliability, governance and integration, according to Pulse 2.0.
The funding so far
The Series A priced TypeSafe at about 37 times its seed valuation, less than four weeks later. Including the $40m seed, the company has raised about $910m from the two disclosed rounds.
Crypto Briefing also reported early investor interest in a possible further round of more than $1bn at a valuation above $10bn.
Company website: typesafe.ai