Hermes by Nous

Model family · Model APIs & inference · indexed, not reviewed

on OpenRouter

Not reviewed

No score, grade or rank. This listing is facts from OpenRouter and our own checks, and it stays out of the rankings until the panel reviews it.

How the index works

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...
What OpenRouter says about Hermes 4 405B

Facts

Maker: Nous
Models: 3 on OpenRouter
Newest: nousresearch/hermes-4-405b

From OpenRouter and our own checks. JSON · Markdown

Why it's listed

OpenRouter lists it, with prices from the providers that serve it.

Being indexed says nothing about quality, and nobody can pay for it. Is this yours? Ask for a review.

Models 3

Model	Released	Context	Input / 1M	Output / 1M	Supports
Hermes 4 405B `nousresearch/hermes-4-405b`	Aug 2025	131k	$1	$3	reasoning
Hermes 3 70B Instruct `nousresearch/hermes-3-llama-3.1-70b`	Aug 2024	131k	$0.70	$0.70	structured output
Hermes 3 405B Instruct `nousresearch/hermes-3-llama-3.1-405b`	Aug 2024	131k	$1	$1	structured output

Prices and limits as OpenRouter lists them, in dollars per million tokens; a provider's own price can differ.

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