Nous: Hermes 3 405B Instruct (free)
Analysis Summary
Nous: Hermes 3 405B Instruct (free) comes from Nous. It was released in August 2024. We place it in the Legacy tier, where it sits at #547 of 565 models overall.
Its 131K-token context window is larger than 60% of the models we list, suiting long documents, large codebases, and retrieval-heavy workloads.
At $0.000 input and $0.000 output per 1M tokens, Nous: Hermes 3 405B Instruct (free) is free to use. Nous: Hermes 3 405B Instruct (free) is worth evaluating where Nousās ecosystem and the modelās specific capabilities fit your workflow.
Editorial notes
Nous Hermes 3 405B (free tier) offers a large parameter count at no cost but has no benchmark data, limiting confidence in its real-world performance for business applications.
Assessed May 28, 2026
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 (free) compares
Its 131K-token context window is larger than 60% of the models we list. Nous: Hermes 3 405B Instruct (free) is currently free to use via OpenRouter.
About Nous: Hermes 3 405B Instruct (free)
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 (free) stack up?
Compare side-by-side with other legacy models.
Model Information
| OpenRouter ID |
nousresearch/hermes-3-llama-3.1-405b:free
|
| Provider | nousresearch |
| Release Date | August 16, 2024 |
| Context Length | 131,072 tokens |
| Status | Active |
External Resources
Frequently asked questions about Nous: Hermes 3 405B Instruct (free)
How much does Nous: Hermes 3 405B Instruct (free) cost?
Nous: Hermes 3 405B Instruct (free) is currently available for free via OpenRouter.
What is the context window of Nous: Hermes 3 405B Instruct (free)?
Nous: Hermes 3 405B Instruct (free) has a context window of 131,072 tokens (131K).
Who created Nous: Hermes 3 405B Instruct (free)?
Nous: Hermes 3 405B Instruct (free) is developed by Nous and was released on August 16, 2024.
