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Nous: Hermes 4 405B
nousresearch/hermes-4-405b
JSONReasoningStreaming
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...
Pricing
Input
$1.00 / 1M
Output
$3.00 / 1M
Specs
Context
131,072 tokens
Input
text
Output
text
Knowledge cutoff: 2024-08-31
Released: 2025-08
Supported parameters
frequency_penaltyinclude_reasoningmax_tokenspresence_penaltyreasoningrepetition_penaltyresponse_formattemperaturetop_ktop_p