Discussion
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Models & availability
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Lead story
Top stories
Models & availability
Latest
TypeSafe AI has made 1 first-party announcement in the last 4 weeks. Latest: Introducing System One Models & Jev, 15 September 2026.
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Discussion
TypeSafe AI released its first System One Model, Jev, in early access. Jev is optimized for structured outputs and calibrated probabilistic decisions, claims to be two orders of magnitude faster and more efficient than existing LLMs on System One tasks, and cannot hallucinate or make type errors.
TypeSafe AI argues that RLHF-trained language models are designed to please humans and assist, not to make reliable autonomous decisions, and asks what comes next.