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Kimi K2 Thinking vs Sonar Reasoning Pro

Moonshot AI vs Perplexity — benchmarks, pricing, and capabilities side by side.

  • Sonar Reasoning Pro has the higher intelligence index (95.7 vs 85.6)
  • Kimi K2 Thinking is cheaper ($0.60 vs $2.00 per 1M input)
  • Kimi K2 Thinking has a larger context window (262K)
Kimi K2 ThinkingSonar Reasoning Pro
Intelligence index85.695.7
DeveloperMoonshot AIPerplexity
TypeLLMMultimodal
AccessOpen weightsAPI only
Context window262,144 tokens128,000 tokens
Input price$0.60 / 1M$2.00 / 1M
Output price$2.50 / 1M$8.00 / 1M
Speed100 tok/s
ReleasedNovember 6, 2025March 7, 2025
Parameters1T (32B active)
Input modalitiesTextText, Image
Output modalitiesTextText