---
title: Nous: Hermes 3 405B Instruct (free) | Text Generation | ModelsLab
description: Build with Nous: Hermes 3 405B Instruct (free) API by Nousresearch. Text generation, chat, code, and reasoning. Pay-per-use. Free tier.
url: https://modelslab.com/models/nousresearch/nousresearch-hermes-3-llama-3.1-405b-free.md
canonical: https://modelslab.com/models/nousresearch/nousresearch-hermes-3-llama-3.1-405b-free.md
type: website
component: Special/NsfwGated
generated_at: 2026-05-25T20:25:12.778802Z
---

Llm

Nous: Hermes 3 405B Instruct (free)
---

model\_id: nousresearch-hermes-3-llama-3.1-405b-free

Hermes 3 is a generalist language model with many improvements over Hermes 2, including advanced agentic capabilities, much better roleplaying, reasoning, multi-turn conversation, long context coherence, and improvements across the...

NSFW samples are gated
---

This model produces NSFW content. Log in and enable NSFW in your account settings to view samples and run the model. The API and model parameters below are accessible regardless.

[Log in](https://modelslab.com/login) [Browse other models](/models)

Use Nous: Hermes 3 405B Instruct (free) via the Modelslab API
---

Send a POST request to the relevant endpoint with your API key and `model_id="nousresearch-hermes-3-llama-3.1-405b-free"`. The API does not enforce the same NSFW gating as the web playground — content moderation is handled by your account-level policy. Sign up to get an API key.

[Get an API key](https://modelslab.com/register) [Read API docs](/docs)

---

*This markdown version is optimized for AI agents and LLMs.*

**Links:**
- [Website](https://modelslab.com)
- [API Documentation](https://docs.modelslab.com)
- [Blog](https://modelslab.com/blog)

---
*Generated by ModelsLab - 2026-05-26*