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Hermes-4-405B (2025)

Hermes-4-405B is a large language model released by Nous Research, released under the llama3 license, with a claimed knowledge cutoff of 2025-08-26. Its weights, configuration, and tokenizer files are shortlisted for hashing and on-chain attestation by Weight Registry.

Description

Hermes 4 is a large-scale hybrid reasoning model built on Meta-Llama-3.1-405B and released by Nous Research in August 2025. It introduces a mode where the model can choose to deliberate internally with explicit reasoning traces before producing a final response.

Metadata

Type
LLM
Issuer
Nous Research
License
llama3
Size
—
Knowledge cutoff
2025-08-26
Source
https://huggingface.co/NousResearch/Hermes-4-405B
Revision
—

Hugging Face stats

828 downloads on Hugging Face · 95 likes · pipeline: text-generation · library: transformers

transformerssafetensorsllamatext-generationLlama-3.1instructfinetunereasoninghybrid-modechatml

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