MODEL PROOF
Hermes 4 405B
NOT INDEPENDENTLY RATED
No independent LMArena score is published for this model.
- Independent LMArena score
- Not independently rated
- Context window
- 131.07K
- Maximum output
- 117.96K
- Input modalities
- text
- Output modalities
- text
- Published input price
- $1.00 / 1M tokens
- Published output price
- $3.00 / 1M tokens
- Pricing kind
- fixed
Inspect complete billing conditions and endpoint terms below.
Price from Nebius: the cheapest offer that is serving, at standard delivery and at a declared precision that is not 4-bit (fp8), at its standard rate. The maker’s own precision is not known.
Every price dimension · USD per million tokens
| Input | $1.00/M |
|---|---|
| Output | $3.00/M |
| Cached input | Unknown/M |
| Cache write | Unknown/M |
| Cache write 1h | Unknown/M |
| Reasoning | Unknown/M |
Who sells it
The same weights, different shops. Cheapest is not like-for-like when serving precision differs.
1 provider offers · rates, limits and conditions
Rates are USD per million tokens. Endpoint terms can differ even when the quoted price and precision match. A listed parameter is a provider declaration, not a task-success test.
| Seller | Input | Output | Precision | Uptime (1d) |
|---|---|---|---|---|
| Nebiusnebius/fp8 Endpoint terms
| $1.00 | $3.00 | fp8 | 100.00% |
Independent scores
No independent benchmark has measured this model. Unrated is not a score of zero.
Capability
| Context window | 131K |
|---|---|
| Max output | 117K |
| Input modes | text |
| Tool use | no |
| Reasoning | optional |
| Knowledge cutoff | 2024-08-31 |
| Open weights | Unknown |
Provenance
| Price source | openrouter.ai |
|---|---|
| Fetched | 2026-10-06 |
| Quality data | unrated |
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...
Questions this page answers
What does Hermes 4 405B cost?
$1.00/M in, $3.00/M out in this catalogue, as of the fetch date on this page. That is the API row, not a subscription.
Does Hermes 4 405B have an independent quality score?
Hermes 4 405B has no independent quality score in this catalogue. Unrated is not a score of zero.
What beats Hermes 4 405B?
Hermes 4 405B has no independent quality score. Unrated is not a score of zero.
Does this page use Artificial Analysis scores for Hermes 4 405B?
No. Artificial Analysis figures are not published here. Quality on this page is LMArena Elo where a score exists; otherwise the row is unrated.
Does a missing score mean Hermes 4 405B scored zero?
Unrated is not a score of zero.
MODEL MONUMENT
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The verdict as one SVG, for a README or a docs page. It states this model's dominance status at the balanced workload on the LMArena lens, with the date it was computed, and it is rebuilt with the catalogue — so it changes when the verdict changes, including to one you would rather it did not.
[](https://undominated.ai/models/nousresearch__hermes-4-405b/)<a href="https://undominated.ai/models/nousresearch__hermes-4-405b/"><img src="https://undominated.ai/badge/nousresearch__hermes-4-405b.svg" alt="Hermes 4 405B — Undominated.ai dominance verdict" height="36"></a>Direct file: https://undominated.ai/badge/nousresearch__hermes-4-405b.svg — a static SVG, written by scripts/build-badges.mjs on every build, so the copy you embed is never
older than the last deploy.
