Nous Research is an American AI research company that began as an online collective and was formalised in 2023. It is known for the Hermes series of open-weight models post-trained from other labs' base models, and for the open-source Hermes Agent.
- Type
- Private company
- Founders
- Jeffrey Quesnelle, Karan Malhotra, Teknium and Shivani Mitra
- AI lab
Catalogue
All models by Nous
2 models · 1–2
| Select models to compare | Model | Released | Context | Input /M | Output /M | Parameters | Type | I/O | Openness |
|---|---|---|---|---|---|---|---|---|---|
 Hermes 4 405BNous | August 26, 2025 | 131K | $1.00 | $3.00 | 405B | Text | text → text | Open weights | |
| Hermes 2 Pro Llama 3 8BNous | April 30, 2024 | 8K | — | — | 8B | Text | text → text | Open weights |