# Hermes 4 405B — price & specs

Source: https://modelbank.ai/models/hermes-4-405b · updated 2026-11-12 · ModelBank

| Field | Value |
|---|---|
| Vendor | Nous Research |
| Input price | $1 / 1M tokens |
| Output price | $3 / 1M tokens |
| Cached input | $0.2 / 1M tokens |
| Context window | 131,072 tokens |
| Max output | 117,964 tokens |
| Input modalities | text |
| Reasoning / tool use | yes / no |
| Intelligence / coding index | — / — |
| Released | 2025-08-26 |
| Retirement date | none announced |

## About

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...

## Price history

- 2026-09-24: $1 in / $3 out


JSON: https://modelbank.ai/api/v1/models/hermes-4-405b