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TypeSafe's Jev goes viral in a week as a System One decision model

After a $40M seed round, TypeSafe released Jev, a model that outputs decisions software can use directly instead of chat, priced at $0.042 per million input tokens with free output.

Veee
@vikktorrrreArchived 2026.09.20Originally posted 2026.09.19
TypeSafe's Jev goes viral in a week as a System One decision model
Veee @vikktorrrreOriginally posted 2026.09.19
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> Be @typesafeai > Founded in 2024 by Diogo Almeida, Erik Gafni and Sasha Sheng > Diogo previously helped create the research behind ChatGPT at OpenAI > Spend 2 years building in stealth > Raise a $40M seed round > Decide chatbots aren’t the final form of AI > Build an entirely new class of model called “System One” > Release the first of its kind: Jev > It doesn’t just chat. It makes decisions your software can directly use > Gives your software a direct answer it can act on instead of a long text response > Costs just $0.042 per million input tokens > Output is completely free > Up to 193x faster and 444x cheaper in TypeSafe’s tests > So many developers tried it that the API briefly struggled to keep up Jev starts taking over AI Twitter All in one week.

x.com/vikktorrrre/status/2101232800087040023Archived 2026.09.20 10:13