Nous: Hermes 3 405B Instruct
Review
Nous Hermes 3 405B Instruct is a large fine-tuned model with function calling and a 131K context window, but no benchmark data is available; without verified performance metrics it cannot be recommended for business-critical use despite its capable base architecture.
Assessment date: April 4, 2026
Our methodology takes into account a range of factors including pricing, functionality, capabilities, benchmark performance, and real-world applicability. Rankings are reviewed and updated regularly as new models are released. Issues with our rankings? Contact us
Performance Profile
Hermes 3 is a generalist language model with many improvements over Hermes 2, including advanced agentic capabilities, much better roleplaying, reasoning, multi-turn conversation, long context coherence, and improvements across the..
Architecture
| Modality | Text → Text |
| Tokenizer | Llama3 |
| Instruct Type | chatml |
| Parameters | 405B |
How does Nous: Hermes 3 405B Instruct stack up?
Compare side-by-side with other legacy models.
Model Information
| OpenRouter ID |
nousresearch/hermes-3-llama-3.1-405b
|
| Provider | nousresearch |
| Release Date | August 16, 2024 |
| Context Length | 131,072 tokens |
| Max Completion | 16,384 tokens |
| Status | Active |
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $1.00 | $0.001000 |
| Output | $1.00 | $0.001000 |
Live Performance
Live endpoint metrics — refreshed every 30 minutes.
