Provider pricing

Nous Research AI API pricing

Nous Research ships the Hermes line — open-weight Llama and Mistral fine-tunes that rank at the top of OpenRouter for personality, steerability, and agent loops. The Forge API and partner inference (Together, OpenRouter) serve Hermes 4 and DeepHermes models.

Founded2023
HeadquartersNew York, NY
Tracked modelsDirectory

Best for

Teams that want open-weight models with strong agentic behavior and full prompt steerability.

Strengths

  • Hermes 4 405B — open-weight frontier-class quality
  • DeepHermes hybrid reasoning model (thinking on/off)
  • Top-3 by token volume on OpenRouter
  • Available on Together, OpenRouter, Nous Forge