Last refreshed 2026-06-15. Next refresh: weekly.
Why use Hermes 3 Llama 3.1 405B on OpenRouter?
OpenRouter offers Hermes 3 Llama 3.1 405B with pay-as-you-go pricing at $1.00/1M input tokens. OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Setup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: nousresearch/hermes-3-llama-3.1-405bnousresearch/hermes-3-llama-3.1-405bRequest example
nousresearch/hermes-3-llama-3.1-405b.Gotchas
- Use provider model ID "nousresearch/hermes-3-llama-3.1-405b", not the LLMReference slug "hermes3-llama31-405b".
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $1.00 |
| Output tokens | $1.00 |
Capabilities
No model capability flags are currently sourced.
About Hermes 3 Llama 3.1 405B
Hermes 3 Llama 3.1 405B is Nous Research's Hermes 3 model. It offers a 128K-token context window.
FAQ
What does Hermes 3 Llama 3.1 405B cost on OpenRouter?
On OpenRouter, Hermes 3 Llama 3.1 405B costs $1 per 1M input tokens and $1 per 1M output tokens.
What is the context window for Hermes 3 Llama 3.1 405B on OpenRouter?
Hermes 3 Llama 3.1 405B supports a 131k token context window on OpenRouter.
What API model ID do I use for Hermes 3 Llama 3.1 405B on OpenRouter?
Use the model ID nousresearch/hermes-3-llama-3.1-405b when calling OpenRouter's API.
Who created Hermes 3 Llama 3.1 405B?
Hermes 3 Llama 3.1 405B was created by Nous Research as part of the Hermes 3 model family.
Is Hermes 3 Llama 3.1 405B open source?
Hermes 3 Llama 3.1 405B has open weights under Llama 3 Community according to the seed data, but that does not necessarily mean an OSI-approved open-source license.