Provider

Nous Research

Nous Research is best evaluated through its Hermes models, open fine-tunes known for steerability and tool use.

summary

Nous Research is an AI research company and open-source organization known for its Hermes models and the Hermes Agent. Its models are built on top of open-weight base models and tuned for steerability, function calling and long, structured conversations. On Eden AI, Nous Research offers Hermes 4 405B, with reasoning and function calling, and Hermes 3 in 405B and 70B versions, both built on Meta's Llama 3.1, with a 131K context window. In October 2026, Nous Research raised a Series B at a valuation of about 1.5 billion dollars.

What is Nous Research?

Nous Research is an artificial intelligence company and open-source research organization. It is best known for the Hermes family of models, fine-tuned from open-weight base models, and for Hermes Agent, its open-source agent. Nous Research publishes its models openly and focuses on models that follow instructions closely and use tools reliably.

Nous Research models available on Eden AI

Hermes 4 405B: reasoning and function calling, with a 131K context window.
Hermes 3 Llama 3.1 405B: a large Hermes model built on Meta's Llama 3.1, with function calling and a 131K context window.
Hermes 3 Llama 3.1 70B: a smaller Hermes 3 model with a 131K context window.

When to choose Nous Research

You want open models tuned for steerable, instruction-following chat.
You need reasoning and tool calling from an open model family.
You want an alternative to the original Llama instruct models.

How to use Nous Research with Eden AI

Call the Hermes models with the Eden AI chat completions API and your Eden AI API key. Each model page lists the providers serving it, with prices, regions and measured speed.