LLM Reference
OpenRouter

Using Hermes 3 Llama 3.1 405B on OpenRouter

Implementation guide · Hermes 3 · Nous Research

ServerlessOpen Weights

OpenRouter exposes Hermes 3 Llama 3.1 405B through model ID nousresearch/hermes-3-llama-3.1-405b. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-06-15. Next refresh: weekly.

Quick Start

  1. 1
    Create an account at OpenRouter and generate an API key.
  2. 2
    Use the OpenRouter SDK or REST API to call nousresearch/hermes-3-llama-3.1-405b — see the documentation for request format.
  3. 3
    You'll be billed $1.00/1M input, $1.00/1M output tokens. See full pricing.
API PortalDocumentationPricingModel Card

Code Examples

See OpenRouter documentation for integration details.

Pricing on OpenRouter

TypePrice (per 1M)
Input tokens$1.00
Output tokens$1.00

Capabilities

No model capability flags are currently sourced.

About Hermes 3 Llama 3.1 405B

Hermes 3 Llama 3.1 405B is Nous Research's Hermes 3 model. It offers a 128K-token context window.

Full model details →

Model Specs

Released2024-11-01
Parameters405B
Context128k
ArchitectureDecoder Only
Knowledge cutoff2023-12

More Models on OpenRouter

Hermes 3 Llama 3.1 70B
All models on OpenRouter →

Provider

OpenRouter
OpenRouter

OpenRouter, Inc.

New York, NY, USA