Sites & Guides

The canonical introduction: Jev is TypeSafe's flagship model and the first System One model. Send state and typed questions, get structured answers your code can use directly.

Everything you need to make your first request: install an SDK, get an API key, and send state plus typed questions.

The launch story: why TypeSafe built decision models, the side-by-side demo, the Doom and Wikiracing bots, and the published workflow evals.

A tracked index of the whole ecosystem: hundreds of GitHub repos, live sites, and articles, with stars refreshed daily from GitHub.

A community hub for Jev extras: widgets, workflows, and playbooks you can try in the browser and share with others.

Use-case walkthroughs and server-side code samples for calling Jev from your own stack, including OpenRouter and TypeScript examples.

End-to-end guide to a ticket-routing workflow with confidence thresholds, zero-data-retention options, and mock-based tests that need no network call.

A practical tour with JavaScript examples: typed choices, scores, probabilities, real latencies and costs, the jagged edges, and how to split jobs correctly.

Give Jev a screen snapshot and a task, and it chooses the next action for agent-driven mobile QA. Ships as a CLI you can point at a real app.