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Available now on ModelsLab · Language Model

Nous: Hermes 3 405B Instruct (free)Frontier LLM Free

Try Nous: Hermes 3 405B Instruct (free)API Documentation

Unlock Hermes Capabilities

Agentic Power

Advanced Reasoning Control

Steer 405B model for reasoning, roleplay, and multi-turn chats with precise prompt adherence.

Code Mastery

Superior Generation

Generate, debug, and optimize code across languages using Nous: Hermes 3 405B Instruct (free).

Long Context

131K Token Window

Maintain coherence in extended conversations with Nous: Hermes 3 405B Instruct (free) API.

Examples

See what Nous: Hermes 3 405B Instruct (free) can create

Copy any prompt below and try it yourself in the playground.

Code Debugger

“Analyze this Python function for bugs and suggest optimizations: def fibonacci(n): if n <= 1: return n else: return fibonacci(n-1) + fibonacci(n-2)”

Math Solver

“Solve step-by-step: Find the integral of x^2 * e^x dx using integration by parts.”

JSON Formatter

“Convert this data to structured JSON with schema validation: user data includes name, age 30, skills python rust.”

Logic Puzzle

“Three houses in a row. Red has fox, blue has dog, green has bird. Who lives next to the cat owner?”

For Developers

A few lines of code.
Hermes 405B. Free API.

ModelsLab handles the infrastructure: fast inference, auto-scaling, and a developer-friendly API. No GPU management needed.

  • Serverless: scales to zero, scales to millions
  • Pay per token, no minimums
  • Python and JavaScript SDKs, plus REST API
API Documentation 
import requests


response = requests.post(
    "https://modelslab.com/api/v7/llm/chat/completions",
    json={
  "key": "YOUR_API_KEY",
  "prompt": "",
  "model_id": ""
}
)
print(response.json())

FAQ

Common questions about Nous: Hermes 3 405B Instruct (free)

Read the docs

Full fine-tune of Llama 3.1 405B by Nous Research. Focuses on user alignment, reasoning, and code. Free via API endpoints.

Include Puter.js library in JS or use OpenAI-compatible endpoints in Python/cURL. No backend setup needed. Supports max 16K output tokens.

131,072 tokens input window. Handles long multi-turn conversations. Up to 16K tokens output per response.

Excels in code generation, debugging, and explanations. Competitive with Llama 3.1 Instruct. Supports multiple languages.

Free access matches paid models in reasoning and steerability. Use via API for agentic tasks. Strong prompt adherence.

Yes, reliable function calling and structured output. Ideal for tool use and JSON responses. Works in JS frameworks.

Ready to create?

Start generating with Nous: Hermes 3 405B Instruct (free) on ModelsLab.

Try Nous: Hermes 3 405B Instruct (free)API Documentation