Jev AI guides for the decision layer.
Independent explainers, API notes, and evaluation checklists for TypeSafe’s Jev System One model.
What is Jev AI? TypeSafe’s System One model explained
Typed decisions versus text generation, current model jev-1.13.0, and where Jev fits.
How to use Jev: API, SDKs, and first request
Endpoint, keys, Python and curl examples, and how to pin a version.
How to get Jev access
TypeSafe console keys versus Vercel AI Gateway’s typesafe-ai/jev.
Jev API is open: waitlist dropped 21 September 2026
Waitlist URL is gone. Console Playground and Create key are live. $5 monthly credit, $0.042 / 1M input.
Is Jev open source? What developers should verify
Hosted model, no public weights. Laya is the open-weight alternative, not Jev.
What is Laya? Open-source local System One model
Apache-2.0 decision model from Convai Innovations. Same choice/score/noul job as Jev, not a TypeSafe release.
Jev vs Laya: hosted TypeSafe model vs open-source local decisions
Laya is an Apache-2.0 System One model on GitHub. Same choice/score/noul job, different product.
Jev vs GPT: a practical architecture decision
Use a decision layer around a general model instead of one model for every branch.
Jev vs Claude: gate the expensive reasoning pass
Let Jev approve or route, then spend Claude tokens only when the work needs language.
Jev pricing: $0.042 per million input tokens
Input-only billing, free output, and a simple token calculator.
How to benchmark a Jev decision layer
Accuracy, calibration, latency, fallback, and downstream outcomes.