Using Hermes-4-405B on Nous Portal

Implementation guide · Hermes 4 · Nous Research

ServerlessOpen Weights

Nous Portal exposes Hermes-4-405B through model ID hermes-4-405b. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-06-30. Next refresh: weekly.

Quick Start

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

API Portal Documentation Pricing Model Card

Code Examples

See Nous Portal documentation for integration details.

Pricing on Nous Portal

Type	Price (per 1M)
Input tokens	$0.09
Output tokens	$0.37

Capabilities

Reasoning

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.

Full model details →

Model Specs

Released2025-09-22

Parameters405B

Context128k

Knowledge cutoff2023-12

Nous Research