Jev, in one place

Jev is TypeSafe AI’s decision model that returns typed answers and probabilities instead of text. It is usage-based: $0.042 per million input tokens, with output tokens free. Below is every page we have published about it — 4 in all.

Updated October 10, 2026 by the BestAI Editorial Team

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• Jev review

  Rating, pricing, pros and cons, and who it suits.

• Jev for Trading: What Developers Actually Build

  Developers use Jev to judge market text, not to place trades: across 14 surveyed projects, thresholds and order placement stay in deterministic code.

• How to Use Jev: API Key, First Request and Where to Get It

  The short answer on how to use Jev: sign in at console.typesafe.ai, create an API key and POST your state and questions to api.typesafe.ai/v1/systemone. There is no waitlist. You can also reach it through OpenRouter, Cloudflare Workers AI and the Python and JavaScript SDKs.

• What Is Jev? TypeSafe's Decision Model, Explained

  Jev is TypeSafe AI's first System One model: it answers typed questions about your data with probabilities instead of writing text. Input costs $0.042 per million tokens, output is free, and replies arrive in roughly 70 to 500 milliseconds.

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