Nous Research
AI company that publishes open-weight Hermes models and the Hermes Agent.
| Model | Released | Weights | Hosts | Cheapest host | Input | Output |
|---|---|---|---|---|---|---|
| Hermes 4 405B | Aug 2025 | — | 1 | Nebius | $1.00 | $3.00 |
| Hermes 3 70B Instruct | Aug 2024 | Open · Llama Community License | 1 | DeepInfra | $0.70 | $0.70 |
| Hermes 3 405B Instruct | Aug 2024 | Open · Llama Community License | 1 | DeepInfra | $1.00 | $1.00 |
3 of 3 models · prices per million tokens at the cheapest host, read Oct 23, 09:51 UTC
About Nous Research
- Founded
- 20233
- Led by
- Dillon Rolnick (CEO)3
- Official API operated from
- United States (Delaware corporation; California law)5
- Mission
- "We are on a mission to create and proliferate open access to intelligence."6
Nous Research was formed in 2023 to counter what it describes as a trend toward centralization and walled gardens in AI.3
The company says it fine-tuned Meta's Llama models to emphasize user alignment.3
Its Releases page lists the YaRN paper on extending the context window of large language models on 31 August 2023.4
The Hermes 3 Technical Report appears on 14 August 2024, followed by the Hermes 3 405B model on 24 August 2024.4
A Hermes 4 Technical Report is listed for 26 August 2025.4
In December 2025 the company listed Hermes-4.3-Seed-36B, which it describes as roughly equivalent in performance to Hermes-4-70B at half the model size and as post-trained entirely on the Psyche network.4
Hermes Agent, an autonomous agent that runs on a user's server, was listed on 25 February 2026, and the company says it was released under an MIT license.3, 4
Its Hermes models are published with open weights under licenses that vary, including Apache 2.0 and the Llama 3 license.1, 2, 3
The terms for its portal are with Nous Research, Inc., a Delaware corporation, and are governed by California law.5
As of October 2026, Dillon Rolnick is its chief executive officer.3
The company states its mission as: "We are on a mission to create and proliferate open access to intelligence."6
Official links
- Website nousresearch.com
- API docs hermes-agent.nousresearch.com/docs
- GitHub github.com/NousResearch
- Blog nousresearch.com/blog
- X x.com/NousResearch
Sources
- NousResearch/Hermes-4.3-36B README.md (raw) | Hugging Face · huggingface.co · read Oct 23
- NousResearch/Hermes-3-Llama-3.1-405B README.md (raw) | Hugging Face · huggingface.co · read Oct 23
- A Note on Our Fundraise | Nous Research · nousresearch.com · read Oct 23
- Releases | Nous Research · nousresearch.com · read Oct 23
- Nous Portal · nousresearch.com · read Oct 23
- Nous Research · nousresearch.com · read Oct 23
Every fact above links to its source and the date it was read; last checked Oct 23. Not affiliated with Nous Research. Corrections or removal on request: contact.