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TypeSafe AIReleased on Sep 15, 2026

Jev: Benchmarks, Pricing & Context Window

Jev is a language model from TypeSafe AI, released in September 2026.

Jev is TypeSafe AI's first "System One Model": a non-autoregressive frontier model that takes unstructured program state as input and outputs type-safe, calibrated structured decisions (with confidence scores) in a single parallel pass

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Jev.

Jev

Jev latency

Jev time to first token, sustained output throughput, and failed-request rate from live model usage over the trailing 7 days.

Jev examples

Recent arena outputs from Jev, picked from the highest-ranked matchups.

Jev license

Jev is a proprietary model available under its provider's product and API terms.

License
Proprietary
Hosted access

Proprietary license - usage restrictions apply

Jev resources

Official sources for Jev: provider documentation, official playground, official launch post, source repository.

FAQ

Common questions about Jev.

When was Jev released?

Jev was released on September 15, 2026 by typesafe. This is the official Jev release date tracked on LLM Stats.

Who created Jev?

Jev was created by typesafe.

What is the license for Jev?

Jev is released under the Proprietary license.

Where is the Jev paper or technical report?

Jev has a paper or technical report available at https://typesafe.ai/blog/introducing-system-one-models-and-jev. Use that source for architecture, training, release and evaluation details.