Jev (latest)
NEWJev 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.
Providers
FastRouter routes your requests to this provider. You can also bring your own key.
typesafeSupported parameters
Request parameters you can send with this model.
Performance
Median throughput and time to first token per provider over the last week.
Throughput
Latency
Make your first API call
OpenAI-compatible. Point your SDK at FastRouter, or call the API directly.
<FASTROUTER_API_KEY> with your key · Get your key →Frequently asked questions
Model scores sourced from ArtificialAnalysis