# Nous: Hermes 4 405B

Provider: nousresearch  
Category: llm  
Model ID: `nousresearch/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...

## Specs

- Context length: 131072 tokens
- Max output: unknown tokens
- Modalities: text
- Released: 2025-08-26

## Pricing

- Input: $1.00 per million tokens
- Output: $3.00 per million tokens

## Providers

- **nousresearch** — ctx 131072, input $1.00/M, output $3.00/M

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Last verified: 2026-04-23T23:46:29.618Z  
Canonical URL: https://switchy.build/models/hermes-4-405b