Nex AGI: Nex-N2.5-Pro
nex-agi/nex-n2.5-pro:free
Access Nex-N2.5-Pro from Nex AGI using Puter.js AI API.
Get Started// 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-pro: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: "nex-agi/nex-n2.5-pro:free"
}).then(response => {
document.body.innerHTML = response.message.content;
});
</script>
</body>
</html>
# pip install openai
from openai import OpenAI
client = OpenAI(
base_url="https://api.puter.com/puterai/openai/v1/",
api_key="YOUR_PUTER_AUTH_TOKEN",
)
response = client.chat.completions.create(
model="nex-agi/nex-n2.5-pro:free",
messages=[
{"role": "user", "content": "Explain quantum computing in simple terms"}
],
)
print(response.choices[0].message.content)
curl https://api.puter.com/puterai/openai/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_PUTER_AUTH_TOKEN" \
-d '{
"model": "nex-agi/nex-n2.5-pro:free",
"messages": [
{"role": "user", "content": "Explain quantum computing in simple terms"}
]
}'
Model Card
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 is currently free through this listing.
Context Window 262K
tokens
Max Output 236K
tokens
Input Cost $0
per million tokens
Output Cost $0
per million tokens
Input text, image
modalities
Tool Use Yes
Release Date Sep 8, 2026
Model Playground
Try Nex-N2.5-Pro instantly in your browser.
This playground uses the Puter.js AI API — no API keys or setup required.
More AI Models From Nex AGI
Frequently Asked Questions
You can access Nex-N2.5-Pro 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.
Yes, it is free if you're using it through Puter.js. With the User-Pays Model, you can add Nex-N2.5-Pro to your app at no cost — your users pay for their own AI usage directly, making it completely free for you as a developer.
| Price per 1M tokens | |
|---|---|
| Input | $0 |
| Output | $0 |
Nex-N2.5-Pro was created by Nex AGI and released on Sep 8, 2026.
Nex-N2.5-Pro supports a context window of 262K tokens. For reference, that is roughly equivalent to 524 pages of text.
Nex-N2.5-Pro can generate up to 236K tokens in a single response.
Nex-N2.5-Pro accepts the following input types: text, image. It produces: text.
Yes, Nex-N2.5-Pro supports tool use (function calling), allowing it to interact with external tools, APIs, and data sources as part of its response flow.
Yes — the Nex-N2.5-Pro 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.
Get started with Puter.js
Add Nex-N2.5-Pro to your app without worrying about API keys or setup.
Read the Docs View Tutorials