TypeSafe: Jev Router
typesafe/jev-router
Try Jev Router for free in your browser, and add it to your app for free with Puter.js AI API.
Try it free Add to your app// npm install @heyputer/puter.js
import { puter } from '@heyputer/puter.js';
puter.ai.chat("Explain quantum computing in simple terms", {
model: "typesafe/jev-router"
}).then(response => {
document.body.innerHTML = response.message.content;
});
<html>
<body>
<script src="https://js.puter.com/v2/"></script>
<script>
puter.ai.chat("Explain quantum computing in simple terms", {
model: "typesafe/jev-router"
}).then(response => {
document.body.innerHTML = response.message.content;
});
</script>
</body>
</html>
Model Card
Jev Router is a model-routing endpoint from TypeSafe, built on Jev, the company's first System One decision model. Rather than generating the reply itself, Jev reads each request, scores it for difficulty and precision, and picks which underlying model and reasoning effort to use for that turn, balancing quality, speed, and cost.
The router is cache-aware: when it switches to a different underlying model mid-conversation, cached chat history carries over, so the new model does not need to reread the full conversation from scratch. It accepts text, image, video, audio, and PDF input and returns text.
Jev Router has a 1,000,000 token context window. On four agent benchmarks reported by OpenRouter, it solved 82% more tasks than OpenRouter's own Auto Router. It was added to OpenRouter on September 25, 2026.
Context Window 1M
tokens
Max Output 1M
tokens
Input Cost $1,000,000
per million tokens
Output Cost $1,000,000
per million tokens
Input text, image, video, audio, pdf
modalities
Release Date Sep 25, 2026
Try Jev Router for free
Try Jev Router instantly in your browser.
This playground uses the Puter.js AI API — no API keys or setup required.
Frequently Asked Questions
You can access Jev Router by TypeSafe through Puter.js AI API. Include the library in your web app or Node.js project and start making calls with just a few lines of JavaScript — no backend and no configuration required. You can also use it with Python or cURL via Puter's OpenAI-compatible API.
Jev Router is free to try with a Puter account. Every account includes a free AI allowance, and you can chat with it in the playground on this page. You can upgrade your account anytime for a larger allowance.
Jev Router is free to integrate using the Puter.js AI API. With the User-Pays Model, you can add AI to your app for $0, since users cover their own AI usage through their Puter account.
| Price per 1M tokens | |
|---|---|
| Input | $1,000,000 |
| Output | $1,000,000 |
Jev Router was created by TypeSafe and released on Sep 25, 2026.
Jev Router supports a context window of 1M tokens. For reference, that is roughly equivalent to 2,000 pages of text.
Jev Router can generate up to 1M tokens in a single response.
Jev Router accepts the following input types: text, image, video, audio, pdf. It produces: text.
Yes — the Jev Router API works with any JavaScript framework, Node.js, or plain HTML through Puter.js. Just include the library and start building. See the documentation for more details.
Add Jev Router to your app for free
Developers can integrate Jev Router for free using the Puter.js AI API.
With the User-Pays Model, each user covers their own AI usage instead of the developer.