Hermes 4 405B

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...

Compare

Context window: 131K
Input: Text
Output: Text
Released: 2025-08-26

Max output: 118K
Knowledge cutoff: 2024-08-31
Model parameters: 406B
Weights: Open
License: llama3
Capabilities: Open weight, Reasoning, Temperature

Pricing

No official pricing available.

Estimate usage cost

Compare verified public prices for this exact model and region. Enter uncached input and cache usage separately. Estimates exclude unspecified fees, credits and currency conversion. Set requests to zero to estimate token charges only.

Input tokens

Output tokens

Cache read tokens

Cache write tokens

Requests

Context tokens (optional)

Currency

Batch processing

Performance

No evaluation results available.

Providers

No providers found

ModelRegistry · Catalog updated 2026-09-29