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Nous Research

Hermes 4 405B pricing & price history

reasoningnousresearch/hermes-4-405b

Hermes 4 405B by Nous Research costs $1.00 per 1M input tokens and $3.00 per 1M output tokens, with a 131K token context window.

$1.00Input / 1M tokens
$3.00Output / 1M tokens
131KContext window
Intelligence index

Price history

$0.00$1.72$3.45 2026-09-24today input /1M output /1M

No price changes since tracking began on 2026-09-24. We check hourly.

Cost calculator

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About 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...

FAQ

How much does Hermes 4 405B cost?

Hermes 4 405B by Nous Research costs $1.00 per 1M input tokens and $3.00 per 1M output tokens, with a 131K token context window. A typical request with 2,000 input and 500 output tokens costs about $0.0035.

What is the context window of Hermes 4 405B?

Hermes 4 405B supports up to 131,072 tokens of context and up to 117,964 output tokens per request.

Has Hermes 4 405B’s price changed?

No price changes recorded since ModelBank started tracking it on 2026-09-24.

Is Hermes 4 405B being deprecated?

No retirement date has been announced for Hermes 4 405B as of 2026-09-24.

What are cheaper alternatives to Hermes 4 405B?

Cheaper options include Nemotron 3.5 Lightning ($0.08/$0.20), DeepSeek V4 Flash 0731 ($0.04/$0.32), Ministral 3 8B 2512 ($0.15/$0.15), Llama 4 Scout ($0.10/$0.30).