Compare Hermes 4 70B from Nous Research and Sonar Reasoning Pro from Perplexity on key metrics including benchmarks, price, context length, and other model features. Access both models and hundreds of others through the OpenRouter API.


Hermes 4 70B and Sonar Reasoning Pro are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.
Hermes 4 70B, from Nous Research, has a 131,072-token context window and is priced by the provider serving it on OpenRouter.
Sonar Reasoning Pro, from Perplexity, has a 128,000-token context window and is priced at $2/M tokens input, $8/M tokens output on OpenRouter.