Nous: Hermes 4 405B
Hermes 4 is a large-scale reasoning model built on Meta-Llama-3.1-405B and released by Nous Research. It introduces a hybrid reasoning mode, where the model can choose to deliberate internally with...
Everything else
| Max output | — |
|---|---|
| Input / 1M | $1 |
| Output / 1M | $3 |
| Cache read / 1M | — |
| Cache write / 1M | — |
| 1M in + 1M out | $4 |
| Takes | text |
| Returns | text |
| Tools | no |
| Reasoning | optional |
| Open weights | yes |
| Released | 2025-08-26 |
| Knowledge cutoff | 2024-08-31 |
| Retires | — |
| Catalog id | nousresearch/hermes-4-405b |
Using it
In 00, this model is picked per agent — and per tier, so the model that answers your customers need not be the one that writes your code. Get 00.