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Nous: Hermes 3 405B Instruct

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Nous: Hermes 3 405B Instruct is a community fine-tune. Behaviour and benchmarks track the upstream base model the fine-tune was trained from. Available via nousresearch. 131,072-token context. Mid-tier pricing. Inherits weights from an upstream open-weights base; benchmarks track the base model unless the fine-tuner publishes their own.

Nous: Hermes 3 405B Instruct is a frontier AI model from nousresearch. It costs $1.000 per million input tokens and $1.000 per million output tokens (blended $1.000/M), with a 131,072-token context window.

INPUT
$1.000/M
per million input tokens
OUTPUT
$1.000/M
per million output tokens
BLENDED 70/30
$1.000/M
unchanged since 3 May
CONTEXT
131,072
tokens
What it is good at
  • Persona/tuning beyond the base model
  • Persona/style adherence beyond the base model
  • Specific domain (RP, instruction, etc.) tuning
  • Inherits base-model capability
Typical use cases
  • Roleplay and creative chat
  • Domain-specific assistants
  • Custom persona deployments

Benchmarks

No published benchmark scores tracked for this model yet. Frontier and reasoning models from major providers have scores; smaller models and inference-host variants typically inherit the underlying open-weights score.

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Frequently asked questions

How much does Nous: Hermes 3 405B Instruct cost?

Nous: Hermes 3 405B Instruct costs $1.000 per million input tokens and $1.000 per million output tokens, for a blended reference rate of $1.000 per million tokens.

What is Nous: Hermes 3 405B Instruct's context window?

Nous: Hermes 3 405B Instruct supports up to 131,072 tokens of context in a single request.

What is Nous: Hermes 3 405B Instruct best for?

Nous: Hermes 3 405B Instruct is well suited to Persona/tuning beyond the base model, Persona/style adherence beyond the base model and Specific domain (RP, instruction, etc.) tuning.

Who makes Nous: Hermes 3 405B Instruct?

Nous: Hermes 3 405B Instruct is developed and served by nousresearch.

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