Hermes 4 405B vs o3 Pro: side-by-side summary

Hermes 4 405B and o3 Pro 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.

o3 Pro, from OpenAI, has a 200,000-token context window and is priced at $20/M tokens input, $80/M tokens output on OpenRouter.

Context window

• Hermes 4 405B: 131,072 tokens
• o3 Pro: 200,000 tokens

Price

• Hermes 4 405B: $1/M tokens input, $3/M tokens output
• o3 Pro: $20/M tokens input, $80/M tokens output

Provided by

• Hermes 4 405B: Nous Research
• o3 Pro: OpenAI

• Hermes 4 405B model details, providers and pricing
• o3 Pro model details, providers and pricing