Nex AGI: Nex-N2.5-Mini

Try Nex-N2.5-Mini 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: "nex-agi/nex-n2.5-mini"
}).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: "nex-agi/nex-n2.5-mini"
        }).then(response => {
            document.body.innerHTML = response.message.content;
        });
    </script>
</body>
</html>

Model Card

Nex-N2.5-Mini is the smallest model in Nex AGI's Nex-N2.5 family, a multimodal agentic line that also includes Nex-N2.5-Pro and Nex-N2.5-Max. It takes text and image input, supports function calling, and runs in three reasoning modes (non-thinking, adaptive thinking by default, and high thinking).

Nex AGI targets it at computer use, web browsing, and agentic coding, where the model explores a codebase, makes multi-file edits, runs commands, and checks the result through visual feedback before continuing.

On Nex AGI's own benchmark table it scores 73.4 on Terminal-Bench 2.1, 71.2 on OSWorld-Verified, and 43.8 on SWE-Bench Pro. Claude Opus 5 leads on all three in the same table (89.1, 83.4, and 79.2).

It's priced at $0.03 per million input tokens and $0.10 per million output tokens, with a free-tier variant also available, giving a 262K context window for long agent loops over browser and desktop sessions.

Context Window 262K

tokens

Max Output 236K

tokens

Input Cost $0.03

per million tokens

Output Cost $0.1

per million tokens

Input text, image

modalities

Tool Use No

Release Date Sep 8, 2026

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This playground uses the Puter.js AI API — no API keys or setup required.

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Nex-N2.5-Pro

Nex-N2.5-Pro is an agentic multimodal model from Nex AGI, the mid-size member of the Nex-N2.5 family alongside Mini and Max. It accepts text and images, supports tool calling and adjustable reasoning effort, and has a 262K context window. The model is built for agentic coding inside a visual feedback loop, exploring codebases, making multi-file changes, running commands, driving browser and desktop interfaces, and testing the result before revising. Nex AGI describes it as building on Nex-N2's multimodal foundations with improvements in computer use and web browsing. Reported scores include 82.7 on Terminal-Bench 2.1, 61.2 on SWE-Bench Pro, 82.2 on OSWorld-Verified, and 87.4 on OSWorld-G, where Nex AGI's table puts it above Claude Opus 5 (76.8) and GPT-5.6 Sol (77.7). Targeted uses are autonomous software engineering, GUI-based QA, computer-use automation, deep research, and scientific workflows. It's priced at $0.08 per million input tokens and $0.25 per million output tokens, with a free-tier variant also offered through this listing.

Frequently Asked Questions

How do I use Nex-N2.5-Mini?

You can access Nex-N2.5-Mini by Nex AGI 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.

Can I try Nex-N2.5-Mini for free?

Nex-N2.5-Mini 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.

Is the Nex-N2.5-Mini API free for developers?

Nex-N2.5-Mini 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.

What is the pricing for Nex-N2.5-Mini?

Nex-N2.5-Mini costs $0.03 per 1M input tokens and $0.1 per 1M output tokens.

	Price per 1M tokens
Input	$0.03
Output	$0.1

Who created Nex-N2.5-Mini?

Nex-N2.5-Mini was created by Nex AGI and released on Sep 8, 2026.

What is the context window of Nex-N2.5-Mini?

Nex-N2.5-Mini supports a context window of 262K tokens. For reference, that is roughly equivalent to 524 pages of text.

What is the max output length of Nex-N2.5-Mini?

Nex-N2.5-Mini can generate up to 236K tokens in a single response.

What types of input can Nex-N2.5-Mini process?

Nex-N2.5-Mini accepts the following input types: text, image. It produces: text.

Does Nex-N2.5-Mini support tool use (function calling)?

No, Nex-N2.5-Mini does not currently support tool use (function calling).

Does it work with React / Vue / Vanilla JS / Node / etc.?

Yes — the Nex-N2.5-Mini 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 Nex-N2.5-Mini to your app for free

Developers can integrate Nex-N2.5-Mini for free using the Puter.js AI API.
With the User-Pays Model, each user covers their own AI usage instead of the developer.

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