Mistral Medium 3.5 vs Sonar Reasoning Pro: side-by-side summary

Mistral Medium 3.5 and Sonar Reasoning Pro are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Mistral Medium 3.5, from Mistral AI, has a 262,144-token context window and is priced at $1.50/M tokens input, $7.50/M tokens output 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.

Context window

• Mistral Medium 3.5: 262,144 tokens
• Sonar Reasoning Pro: 128,000 tokens

Price

• Mistral Medium 3.5: $1.50/M tokens input, $7.50/M tokens output
• Sonar Reasoning Pro: $2/M tokens input, $8/M tokens output

Provided by

• Mistral Medium 3.5: Mistral AI
• Sonar Reasoning Pro: Perplexity

• Mistral Medium 3.5 model details, providers and pricing
• Sonar Reasoning Pro model details, providers and pricing