Hermes 4 405B
Nous · Mid
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...
Input / 1M
$1.00
Output / 1M
$3.00
Cached input / 1M
—
Context window
131K
Where it sits
197th-cheapest mid model
by blended $/Mtok among 262 listed mid models
163% above the mid median
blended $/Mtok across 262 mid models
Output costs 3× input
$1.00 in / $3.00 out per 1M
Held flat since launch (Jun 2026)
no blended price change recorded
Computed live from current prices and this model's history — not hand-written, so it stays accurate as prices move.
Price history
Only one price on record so far — the history chart appears once a price changes.
Snapshots
| Effective | Input | Output | Cached in | Note | Source |
|---|---|---|---|---|---|
| 11 Jun 2026 | $1.00 | $3.00 | — | Imported from OpenRouter | openrouter.ai |