Nous Research Hermes 4 flagship hybrid reasoning model based on Llama 3.1 405B.
LLM Gateway routes requests to the best providers that are able to handle your prompt size and parameters.
Nous Research Hermes 4 flagship hybrid reasoning model based on Llama 3.1 405B. You can access it through LLM Gateway's OpenAI-compatible API with automatic provider routing, fallback, and cost analytics.
Pricing for Hermes 4 405B on LLM Gateway starts at $1.00 per million input tokens and $3.00 per million output tokens, depending on the provider. The pricing table above always reflects the current per-provider rates.
Hermes 4 405B supports a context window of up to 131,072 tokens on its largest provider deployment.
Hermes 4 405B is served by Nebius AI through LLM Gateway. Requests are automatically routed to the best available provider, with fallback when a provider has issues.
Yes. Hermes 4 405B supports both tool (function) calling and structured JSON outputs through LLM Gateway.
Hermes 4 405B was released on August 26, 2025.