Nous: Hermes 3 405B Instruct
Analysis Summary
Nous Hermes 3 405B Instruct is the paid tier of Nous Research's large instruction-tuned model, priced at $1.00 per million tokens in and out with a 131K context window. The 405B scale suggests meaningful capacity for complex tasks, but no benchmark data is available to verify reasoning, coding, or instruction-following quality against the current model landscape.
For businesses, the large context window and parameter count make it potentially interesting for long-document analysis or complex content generation. However, without benchmark evidence, it is impossible to assess whether it competes with similarly priced models that have verified performance data.
At $1.00 per million tokens, it sits in a competitive price band where several well-benchmarked alternatives exist. Teams should run direct comparisons against benchmarked models before committing to this for production use.
Assessed June 6, 2026
Editorial notes
Nous Hermes 3 405B Instruct has no benchmark data, limiting confidence in its capability despite the large parameter count and 131K context window.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
Performance Profile
How Nous: Hermes 3 405B Instruct compares
Its 131K-token context window is larger than 59% of the models we list. At $1.00 per million input tokens it is cheaper than 25% of comparable models.
About Nous: Hermes 3 405B Instruct
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 Detail
| Instruct Type | chatml |
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.
Leaderboard Categories
External Resources
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Frequently asked questions about Nous: Hermes 3 405B Instruct
How much does Nous: Hermes 3 405B Instruct cost?
Nous: Hermes 3 405B Instruct costs $1.00 per million input tokens and $1.00 per million output tokens.
What is the context window of Nous: Hermes 3 405B Instruct?
Nous: Hermes 3 405B Instruct has a context window of 131,072 tokens (131K).
Who created Nous: Hermes 3 405B Instruct?
Nous: Hermes 3 405B Instruct is developed by Nous and was released on August 16, 2024.
Data sourced from OpenRouter API, Artificial Analysis and Hugging Face Open LLM Leaderboard. Scores are editorially curated by our team.
Last updated: June 19, 2026 8:38 pm