Using Hermes-4-405B on Nous Portal

Quick Start

1. 1
   Create an account at Nous Portal and generate an API key.
2. 2
   Use the Nous Portal SDK or REST API to call hermes-4-405b — see the documentation for request format.
3. 3
   You'll be billed $0.09/1M input, $0.37/1M output tokens. See full pricing.

About Nous Portal

Official Nous-hosted API platform. The March 12, 2025 announcement describes it as an OpenAI-compatible chat completions and completions API, while the current models page says users can access 314 models via the Nous API powered by OpenRouter.

Nous Research's hosted inference platform and subscription portal. It provides API keys, billing, usage tracking, team management, and hosted access to Nous models plus a broader catalog routed through OpenRouter.

Pricing on Nous Portal

Capabilities

About Hermes-4-405B

Hermes 4's 405B hosted variant on Nous Portal. The portal describes it as the largest Hermes 4 model, focused on advanced reasoning and creative depth rather than inference speed or cost.