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Hermes 4 405B

Hermes 4 is a large-scale reasoning model built on Meta-Llama-3.1-405B and released by Nous Research.

text → text · made by Nous Research

$0.09→$0.37per Mtok in / out
Nous Research · 5 sellers

Sold by 6 ways

SellerLaneRate
Nous Research apistandard$0.09per Mtok in$0.37per Mtok outinference-api.nousresearch.com · read 2026-08-25
Nous Research 0 ways$0.09per Mtok in$0.37per Mtok out
Nous Research aggregatornot on the seller's list todaystandard$0.09per Mtok in$0.37per Mtok outinference-api.nousresearch.com · read 2026-08-25
ElectronHub aggregatorstandard$0.2per Mtok in$0.8per Mtok outapi.electronhub.ai · read 2026-11-01
Nebius Token Factory aggregatorstandard$1per Mtok in$3per Mtok outtokenfactory.nebius.com · read 2026-08-25
OpenRouter aggregatorstandard$1per Mtok in$3per Mtok out$0.2per Mtok cachedopenrouter.ai · read 2026-08-24
Requesty aggregatornebius$1per Mtok in$3per Mtok out$1per Mtok cachedrouter.requesty.ai · read 2026-08-28

About

Hermes 4 405B — a text model from Nous Research, sold by 5 companies from $0.09 in and $0.37 out per million tokens.

It takes text and returns text, with a context window of 131,072 tokens. It was published in August 2025, trained on material up to August 2024. Its sellers say it can reason step by step and call a tool. The catalogue files it under chat. Five companies sell it. The cheapest is $0.09 in and $0.37 out per million tokens at Nous Research. Beside the standard rate there is a separately routed lane.

Every current figure

Maker
Nous Research
Register
model
Takes
text
Returns
text
Context
131,072 tokens
Published
August 2025
Knowledge to
August 2024
Parameters
406 billion
Licence
not read
Sellers
5
Price
$0.09 in and $0.37 out per million tokens — Nous Research

Known as 2 names

NousResearch/Hermes-4-405Bnebius/nousresearch/hermes-4-405b