GPT-5.6 Sol Pro vs Sonar Pro Search: side-by-side summary

GPT-5.6 Sol Pro and Sonar Pro Search are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

GPT-5.6 Sol Pro, from OpenAI, has a 1,050,000-token context window and is priced at $2.50/M tokens input, $15/M tokens output on OpenRouter.

Sonar Pro Search, from Perplexity, has a 200,000-token context window and is priced at $3/M tokens input, $15/M tokens output on OpenRouter.

Context window

• GPT-5.6 Sol Pro: 1,050,000 tokens
• Sonar Pro Search: 200,000 tokens

Price

• GPT-5.6 Sol Pro: $2.50/M tokens input, $15/M tokens output
• Sonar Pro Search: $3/M tokens input, $15/M tokens output

Provided by

• GPT-5.6 Sol Pro: OpenAI
• Sonar Pro Search: Perplexity

• GPT-5.6 Sol Pro model details, providers and pricing
• Sonar Pro Search model details, providers and pricing