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GPT-5 Mini vs Kimi K2.5

Head to head on 25 shared benchmarks, with price, context window, and release dates.

Benchmark scores

77

evals · sort by any column, ⤢ to expand fullscreen

Model
Kimi K2.5

Moonshot AI

68.3%1576elo74.927.9%78.9%13.2%43.7%72.5%77.9%61.4%57.4%77.7%84.9%76.0%39.3%76.4%66.5%49.9%39.6%67.3%70.8%74.2%18.9%17.5%81.3%--96.1--------39.0%------35.8%----95.4--78.5%10421----62.0%-87.1-63.3%---73-69.4----26.3%----56.8%
GPT-5 Mini

OpenAI

60.2%1310elo56.227.2%68.7%5.1%45.6%69.1%68.2%55.2%65.3%75.5%82.2%68.3%43.0%80.6%66.9%43.0%36.9%39.7%59.8%75.2%14.4%14.2%31.9%0.0%46.7%-0.0%1.130.0%-0.1520.0%25.0%40.0%1.7-100.0%18.1%2.8%100.0%66.7%0.0%-88.3%60.0%100.0%90.0%-47.2%80.0%--54.5%0.0%1.541.54-80.0%-77.5%-9.0%16.8%4.95-0.0%-9.5%0.0%86.1%0.49-39.21272.1186.0%86.0%47.9%
2 / 2 models
AttributeGPT-5 Mini

OpenAI

Kimi K2.5

Moonshot AI

DescriptionGPT-5 mini is an AI model from OpenAI.Kimi K2.5 is an AI model from Kimi.
FamilyGPTKimi
Params--
Open weightsclosedclosed
LicenseproprietaryModified MIT
Released7 Aug 202527 Jan 2026
Context400,000262,144
Input $/1M$0.25$0.60
Output $/1M$2.00$3.00
Cache read $/1M$0.025$0.100
Cache write $/1M--
Speed0 tok/s0 tok/s
Latency0.00 s0.00 s
Modalitiestext, image, filetext, image
Providers--
PublisherOpenAIMoonshot AI
Reported scores

FAQ

Is GPT-5 Mini or Kimi K2.5 better?
Across the 25 benchmarks both models report on Sophon, Kimi K2.5 leads on 19 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
How do GPT-5 Mini and Kimi K2.5 compare on GPQA Diamond?
GPT-5 Mini scores 68.7% and Kimi K2.5 scores 78.9% on GPQA Diamond.
Which is cheaper, GPT-5 Mini or Kimi K2.5?
GPT-5 Mini is cheaper at $2.00 per million output tokens against $3.00 for Kimi K2.5 - about 1.5x.
When were GPT-5 Mini and Kimi K2.5 released?
GPT-5 Mini was released 7 Aug 2025 by OpenAI. Kimi K2.5 was released 27 Jan 2026 by Moonshot AI.

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