How much does Nous: Hermes 4 405B cost per 1M tokens?

Nous: Hermes 4 405B costs $1.00 per 1M input tokens and $3.00 per 1M output tokens on the standard tier. Cached input is $0.200 per 1M.

What is Nous: Hermes 4 405B's context window?

Nous: Hermes 4 405B accepts up to 131,072 tokens in a single request, and can return up to 117,964 output tokens.

Is there a cheaper OpenRouter model than Nous: Hermes 4 405B?

Yes. Free Models Router is free per 1M input tokens versus $1.00 for Nous: Hermes 4 405B, with a 200,000 token context window.

Where does this Nous: Hermes 4 405B price come from?

From the OpenRouter catalogue, because OpenRouter does not publish machine-readable pricing. OpenRouter is a reseller, so its rate can differ from OpenRouter's own — verify before committing spend.

Nous: Hermes 4 405B pricing

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… Nous: Hermes 4 405B from OpenRouter costs $1.00 per 1M input tokens and $3.00 per 1M output tokens. Cached input is $0.200 per 1M. Context window 131,072 tokens.

API id nousresearch/hermes-4-405b · OpenRouter · source · updated 2026-11-10 · general-purpose

$1.00

Input / 1M tokens

$3.00

Output / 1M tokens

$0.200

Cached input / 1M

131K

Context window

Nous: Hermes 4 405B specifications

Provider: OpenRouter
API id: nousresearch/hermes-4-405b
Model type: general-purpose
Context window: 131K tokens
Max output: 118K tokens
Currency: USD
Price source: Provider API
Last checked: 2026-11-10

What Nous: Hermes 4 405B costs in practice

Estimated cost at common usage volumes
Workload	Input tokens	Output tokens	Estimated cost
Short chat turn	1,000	500	$0.0025
Document summary	50,000	2,000	$0.06
1M tokens in, 200K out	1,000,000	200,000	$1.60

Estimates use the standard tier and ignore caching discounts, so real bills with repeated prompt prefixes are typically lower.

Nous: Hermes 4 405B price history

Recorded	Input /1M	Output /1M
2026-10-28	$1.00	$3.00
2026-08-27	$1.00	$3.00

Common questions

How much does Nous: Hermes 4 405B cost per 1M tokens?: Nous: Hermes 4 405B costs $1.00 per 1M input tokens and $3.00 per 1M output tokens on the standard tier. Cached input is $0.200 per 1M.
What is Nous: Hermes 4 405B's context window?: Nous: Hermes 4 405B accepts up to 131,072 tokens in a single request, and can return up to 117,964 output tokens.
Is there a cheaper OpenRouter model than Nous: Hermes 4 405B?: Yes. Free Models Router is free per 1M input tokens versus $1.00 for Nous: Hermes 4 405B, with a 200,000 token context window.
Where does this Nous: Hermes 4 405B price come from?: From the OpenRouter catalogue, because OpenRouter does not publish machine-readable pricing. OpenRouter is a reseller, so its rate can differ from OpenRouter's own — verify before committing spend.

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