Hermes 4
Nous ResearchOpen Source
2 models2025Up to 128K ctxFrom $0.05/1M input
About
The Hermes 4 family is Nous Research's open-source instruction-tuned series built on Llama 3.1 foundations, spanning 70B and 405B parameter variants with hybrid reasoning behavior and hosted availability through Nous Portal.
Specifications(2 models)
| Model | Released | Context | Parameters | Reasoning |
|---|---|---|---|---|
| Hermes-4-70B | 2025-09 | 128K | 70B | Yes |
| Hermes-4-405B | 2025-09 | 128K | 405B | Yes |
Available From(1 provider)
Pricing
| Model | Provider | Input / 1M | Output / 1M | Type |
|---|---|---|---|---|
| Hermes-4-70B | Nous Portal | $0.05 | $0.2 | Serverless |
| Hermes-4-405B | Nous Portal | $0.09 | $0.37 | Serverless |
Frequently Asked Questions
- What is Hermes 4?
- The Hermes 4 family is Nous Research's open-source instruction-tuned series built on Llama 3.1 foundations, spanning 70B and 405B parameter variants with hybrid reasoning behavior and hosted availability through Nous Portal.
- How many models are in the Hermes 4 family?
- The Hermes 4 family contains 2 models.
- What is the latest Hermes 4 model?
- The latest model is Hermes-4-70B, released in 2025-09.
- How much does Hermes 4 cost?
- Hermes 4 models range from $0.05/1M to $0.09/1M input tokens depending on the model and provider.
