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Kimi K2.5 vs o3 Pro

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

  • Kimi K2.5 has the higher intelligence index (87.9 vs 84.5)
  • Kimi K2.5 is cheaper ($0.40 vs $20.00 per 1M input)
  • Kimi K2.5 is faster
  • Kimi K2.5 has a larger context window (262K)
Kimi K2.5o3 Pro
Intelligence index87.984.5
DeveloperMoonshot AIOpenAI
TypeMultimodalMultimodal
AccessOpen weightsAPI only
Context window262,144 tokens200,000 tokens
Input price$0.40 / 1M$20.00 / 1M
Output price$1.90 / 1M$80.00 / 1M
Speed35 tok/s25 tok/s
ReleasedJanuary 27, 2026June 10, 2025
Parameters1T (32B active)
Input modalitiesText, ImageText, Image
Output modalitiesTextText

Shared benchmarks

Kimi K2.5
o3 Pro
GPQA Diamond
87.9
84.5