TypeSafe: Jev (latest) · fastrouter

Jev is TypeSafe's flagship System One model, served by POST /v1/systemone. It evaluates a text `state` against a map of typed `questions` (noul yes/no, choice, and score) and returns one calibrated `answer` per question. `jev-latest` currently resolves to `jev-1.13.0`. Text only (string, JSON object, or array of text values); no image, audio, or video input. Trained with RLCD for calibrated decisions; not fine-tuned on customer data. Charged per input token, output tokens are free.

Base modelAll models on this baseAll models of the providerto the provider

Input, $/1M $0.042

Output, $/1M —

Context 64 000

Max output 4 096

Accepts text

Last checked 04.11.2026 12:00:14 UTC

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