Nous Research: Hermes 4 14B

nousresearch/hermes-4-14b

Access Hermes 4 14B from Nous Research using the 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: "nousresearch/hermes-4-14b"
}).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: "nousresearch/hermes-4-14b"
        }).then(response => {
            document.body.innerHTML = response.message.content;
        });
    </script>
</body>
</html>

Model Card

Hermes 4 14B is the smallest model in Nous Research's Hermes 4 family, a fine-tune of Qwen3-14B trained on a post-training corpus of roughly 60B tokens built around verified reasoning traces.

It is a hybrid reasoning model. It answers directly by default and can be switched into a reasoning mode that works through explicit think segments before the final answer, with training aimed at keeping those reasoning traces from running overlong.

It is trained for function calling and tool use within a single assistant turn, and for structured outputs, including emitting schema-valid JSON and repairing malformed objects. In line with the Hermes series' focus on steerability and neutral alignment, Nous Research reports state-of-the-art results for Hermes 4 on its RefusalBench test, meaning fewer refused requests than comparable models.

Context Window 41K

tokens

Max Output 41K

tokens

Input Cost $0.01

per million tokens

Output Cost $0.05

per million tokens

Tool Use Yes

Release Date Aug 30, 2025

Model Playground

Try Hermes 4 14B instantly in your browser.
This playground uses the Puter.js AI API — no API keys or setup required.

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Frequently Asked Questions

How do I use Hermes 4 14B?

You can access Hermes 4 14B by Nous Research 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.

Is Hermes 4 14B free?

Hermes 4 14B 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 Hermes 4 14B?

Hermes 4 14B costs $0.01 per 1M input tokens and $0.05 per 1M output tokens.

	Price per 1M tokens
Input	$0.01
Output	$0.05

Who created Hermes 4 14B?

Hermes 4 14B was created by Nous Research and released on Aug 30, 2025.

What is the context window of Hermes 4 14B?

Hermes 4 14B supports a context window of 41K tokens. For reference, that is roughly equivalent to 82 pages of text.

What is the max output length of Hermes 4 14B?

Hermes 4 14B can generate up to 41K tokens in a single response.

Does Hermes 4 14B support tool use (function calling)?

Yes, Hermes 4 14B supports tool use (function calling), allowing it to interact with external tools, APIs, and data sources as part of its response flow.

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

Yes — the Hermes 4 14B 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 Hermes 4 14B to your app for free

Developers can integrate Hermes 4 14B 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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