Overview
Hermes 4 405B vs GPT-5.1-Codex-Mini: side-by-side summary
Hermes 4 405B and GPT-5.1-Codex-Mini are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Hermes 4 405B, from Nous Research, has a 131,072-token context window and is priced at $1/M tokens input, $3/M tokens output on OpenRouter.
GPT-5.1-Codex-Mini, from OpenAI, has a 400,000-token context window and is priced at $0.25/M tokens input, $2/M tokens output on OpenRouter.
- Context window
- Hermes 4 405B: 131,072 tokens
- GPT-5.1-Codex-Mini: 400,000 tokens
- Price
- Hermes 4 405B: $1/M tokens input, $3/M tokens output
- GPT-5.1-Codex-Mini: $0.25/M tokens input, $2/M tokens output
- Provided by
- Hermes 4 405B: Nous Research
- GPT-5.1-Codex-Mini: OpenAI