Nous Research

Hermes 4 405B

nousresearch/hermes-4-405b

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Specification

Published by the vendor; the platform bills at the target's declared price.

Hermes 4 405B

reasoning open weights

Nous Research 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...

Input $/1M: $1.00
Output $/1M: $3.00
Context: 131K
Max output: 118K
Released: Aug 26, 2025
Modalities: text

On this deployment

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Not routable here yet

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targets.yamlyaml

# targets.yaml - declare a target that runs Hermes 4 405B
targets:
  - id: hermes-4-405b
    kind: llm
    name: Hermes 4 405B
    metadata:
      model: nousresearch/hermes-4-405b          # links the target to this catalogue entry
    capabilities:
      domains: [general]
      supports_tools: false
      context_window: 131072
    cost:
      usd_per_1k_tokens: 0.002000

Price among Nous Research models

Input list price per million tokens; Hermes 4 405B is the 3rd cheapest of 4 listed.

1
Hermes 4 70B
$0.13
2
Hermes 3 70B Instruct
$0.70
3
Hermes 4 405B
$1.00
4
Hermes 3 405B Instruct
$1.00

More from Nous Research

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