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Ox Alpha vs Sonar Reasoning Pro: side-by-side summary

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

Ox Alpha, from Stealth, has a 1,048,576-token context window and is free to use 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
  • Ox Alpha: 1,048,576 tokens
  • Sonar Reasoning Pro: 128,000 tokens
Price
  • Ox Alpha: Free
  • Sonar Reasoning Pro: $2/M tokens input, $8/M tokens output
Provided by
  • Ox Alpha: Stealth
  • Sonar Reasoning Pro: Perplexity
  • Ox Alpha model details, providers and pricing
  • Sonar Reasoning Pro model details, providers and pricing