Recursive: Flint v1.0
recursive/flint-v1.0:free
Try Flint v1.0 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: "recursive/flint-v1.0:free"
}).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: "recursive/flint-v1.0:free"
}).then(response => {
document.body.innerHTML = response.message.content;
});
</script>
</body>
</html>
Model Card
Flint v1.0 is an open-weight mixture-of-experts language model from Recursive, built for coding agents. It has about 39.8B total parameters with roughly 2.5B active per token, and is released under the Apache 2.0 license.
Recursive says it is designed to investigate codebases, fix bugs, implement features, and write tests. It always produces reasoning, supports multi-turn tool calling, and has a 262K-token context window. Recursive recommends an output budget of at least 32,768 tokens for hard problems, since long reasoning can use up a smaller budget.
On Recursive's own release evaluations it scores 74.2% on SWE-bench Verified and 54.9% on Terminal-Bench 2.1. These figures are vendor-reported.
It suits developers building coding agents and tool-calling workflows through an API.
Context Window 262K
tokens
Max Output 236K
tokens
Input Cost $0
per million tokens
Output Cost $0
per million tokens
Input text
modalities
Tool Use Yes
Release Date Oct 21, 2026
Try Flint v1.0 for free
Try Flint v1.0 instantly in your browser.
This playground uses the Puter.js AI API — no API keys or setup required.
Frequently Asked Questions
You can access Flint v1.0 by Recursive 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.
Flint v1.0 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.
Flint v1.0 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 | $0 |
| Output | $0 |
Flint v1.0 was created by Recursive and released on Oct 21, 2026.
Flint v1.0 supports a context window of 262K tokens. For reference, that is roughly equivalent to 524 pages of text.
Flint v1.0 can generate up to 236K tokens in a single response.
Flint v1.0 accepts the following input types: text. It produces: text.
Yes, Flint v1.0 supports tool use (function calling), allowing it to interact with external tools, APIs, and data sources as part of its response flow.
Yes — the Flint v1.0 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 Flint v1.0 to your app for free
Developers can integrate Flint v1.0 for free using the Puter.js AI API.
With the User-Pays Model, each user covers their own AI usage instead of the developer.