NONousresearch/ Hermes
Hermes 4 405B
nousresearch/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...
Model information
Released
2025-08-26
Context window
131K
Model parameters
406B
Weights
Open
Modalities
Input
Text
Output
Text
Identity
- Version
- hermes-4-405b
- Knowledge cutoff
- 2024-08-31
Resources
Capabilities
Open weightReasoningTemperature
Providers
| Provider | Provider model ID | Protocol | Context | Max output | Input | Output | Capabilities | Notes | Pricing | Streaming |
|---|---|---|---|---|---|---|---|---|---|---|
| OpenRouter | nousresearch/hermes-4-405b | openai_chat | 131K | - | ReasoningStructuredTemperature | Hugging Face: NousResearch/Hermes-4-405B | input $1/M · output $3/M | Yes | ||
| Kilo Gateway | nousresearch/hermes-4-405b | openai_chat | 131K | - | ReasoningTemperature | - | input $1/M · output $3/M | Yes | ||
| Nous Research | hermes-4-405b | custom | 131K | - | - | - | - | Yes |