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Model · OpenRouter

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...

Author / organizationNousresearch
AccessHosted API (no weights listed here)
Price per million tokens$1 in · $3 out
Context window131,072 tokens
Tasktext-generation
Created26 August 2025
Last updated at source—
text-generationhostedreasoning
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USD per million tokens

00.81.52.3310-1510-1610-1710-1810-19Input · 10-15: 1Input · 10-16: 1Input · 10-17: 1Input · 10-18: 1Input · 10-19: 1Output · 10-15: 3Output · 10-16: 3Output · 10-17: 3Output · 10-18: 3Output · 10-19: 3
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Silytics shows public metadata from OpenRouter and links to the original. Information may be incomplete or out of date. Last refreshed 19 October 2026. Licenses and terms of the original apply to the work itself. Not financial, legal or professional advice.