Jev, a text-free 'System One' model from ex-OpenAI staff, hits 13% Vercel adoption in 24 hours
快鲤鱼 · wechat · 2026-09-24
TypeSafe AI, founded by former OpenAI researcher Diogo Almeida (InstructGPT/RLHF), launched Jev—a 'System One Model' that generates no text, only returning choices, scores, or calibrated probabilities.
- Traction: Nearly 13% of paid teams on Vercel AI Gateway adopted it within 24 hours (2x+ other new models); 140k developers joined the beta in 36 hours.
- Funding: $40M seed led by DCVC at a $200M valuation.
- Tech: No autoregressive generation—only Choice (up to 255 options), Score, and Noul APIs. End-to-end latency of 70-500ms vs 3-329s for frontier LLMs (up to 193x faster), $0.0004 per decision, with RLCD-calibrated probabilities and zero-shot generalization.
- Use cases: WeChat community moderation triage is a breakout scenario; Vercel replaced a classifier for 5-18x speedups. Open-source clones appeared within three days, so the moat may be ecosystem and brand.
Related event: Ex-OpenAI researcher launches Jev, a non-text "System One" decision model(12 posts)→
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