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Sonar Reasoning Pro vs Solar Pro 4: side-by-side summary

Sonar Reasoning Pro and Solar Pro 4 are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

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.

Solar Pro 4, from upstage, has a 524,288-token context window and is priced at $0.03/M tokens input, $0.12/M tokens output on OpenRouter.

Context window
  • Sonar Reasoning Pro: 128,000 tokens
  • Solar Pro 4: 524,288 tokens
Price
  • Sonar Reasoning Pro: $2/M tokens input, $8/M tokens output
  • Solar Pro 4: $0.03/M tokens input, $0.12/M tokens output
Provided by
  • Sonar Reasoning Pro: Perplexity
  • Solar Pro 4: upstage
  • Sonar Reasoning Pro model details, providers and pricing
  • Solar Pro 4 model details, providers and pricing