Jev by @typesafeai is now on OpenRouter, in beta. Jev is a System One model. Instead of generating text, it takes your app's state plus a typed question and returns a typed decision with a probability attached. There is no JSON prompting, parsing layer, and nothing to validate Show more
Jev Launches on OpenRouter
OpenRouter's beta announcement for Jev: state plus typed questions returns typed decisions with probabilities, so there is no JSON prompting, parsing layer, or output validation.
- Category
- Tools & Integrations
- Published by
- Community
- Author
- OpenRouter
- Added
- 2026-09-20
The post
Highlights
- Beta availability of Jev through OpenRouter.
- Describes the API as typed decisions with probabilities instead of generated text.
- Says no JSON prompting or output validation is needed.
Watch out
A platform announcement with no performance data.
More like this
From the community
Posts from builders shipping with Jev right now.
Fast browser use with Stagehand
we built blazing fast computer/browser use with Jev + @Stagehanddev. this task cost $0.001 and executed at near instant speed (in a remote browser btw) the loop: observe the page, send a11y tree as state + actions as questions, Jev decides the next action, then Stagehand Show more
After co-inventing ChatGPT, I kept asking myself: why have superhuman chat models not led to AGI? I’ve spent the last 2 years in stealth building a new way to train models (RLCD), and a new type of frontier AI model that we are releasing today: Jev • 20-200x faster • 40-400x
LLM-as-a-judge, sped up
Jev has spoken. It picked which model is AGI. 20–200x faster. 40–400x cheaper. This could make things like LLM-as-a-judge insanely fast and nearly free. (I tried a bunch of prompts and still didn’t burn through $0.10.)
After co-inventing ChatGPT, I kept asking myself: why have superhuman chat models not led to AGI? I’ve spent the last 2 years in stealth building a new way to train models (RLCD), and a new type of frontier AI model that we are releasing today: Jev • 20-200x faster • 40-400x


