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GPT-4.1 vs Kimi K2.5

Head to head on 12 shared benchmarks, with price, context window, and release dates.

Benchmark scores

63

evals · sort by any column, ⤢ to expand fullscreen

Model
Kimi K2.5

Moonshot AI

68.3%1576elo27.9%78.9%13.2%43.7%66.5%39.6%70.8%74.2%18.9%81.3%----96.1-----39.0%-74.935.8%-95.478.5%1042172.5%77.9%61.4%57.4%77.7%84.9%76.0%-----62.0%--39.3%-76.4%87.1--63.3%49.9%-7367.3%--69.426.3%17.5%--56.8%
GPT-4.1

OpenAI

63.1%1417elo5.5%66.6%4.2%43.0%65.9%38.1%39.6%75.1%13.6%47.1%0.0%52.4%43.7%34.7%-26.7%61.5%1.6483.7%1.55-12.4%--60.9%----------45.7%70.8%0.490.4991.3%-32.1%32.1%-69.4%--80.6%50.5%--8.57--31.1%10.0%---92.0%92.0%48.0%
2 / 2 models
AttributeGPT-4.1

OpenAI

Kimi K2.5

Moonshot AI

DescriptionGPT-4.1 is an AI model from OpenAI.Kimi K2.5 is an AI model from Kimi.
FamilyGPTKimi
Params--
Open weightsclosedclosed
LicenseproprietaryModified MIT
Released14 Apr 202527 Jan 2026
Context1,047,576262,144
Input $/1M$2.00$0.60
Output $/1M$8.00$3.00
Cache read $/1M$0.500$0.100
Cache write $/1M--
Speed0 tok/s0 tok/s
Latency0.00 s0.00 s
Modalitiesimage, text, filetext, image
Providers--
PublisherOpenAIMoonshot AI
Reported scores

FAQ

Is GPT-4.1 or Kimi K2.5 better?
Across the 12 benchmarks both models report on Sophon, Kimi K2.5 leads on 11 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
How do GPT-4.1 and Kimi K2.5 compare on GPQA Diamond?
GPT-4.1 scores 66.6% and Kimi K2.5 scores 78.9% on GPQA Diamond.
Which is cheaper, GPT-4.1 or Kimi K2.5?
Kimi K2.5 is cheaper at $3.00 per million output tokens against $8.00 for GPT-4.1 - about 2.7x.
When were GPT-4.1 and Kimi K2.5 released?
GPT-4.1 was released 14 Apr 2025 by OpenAI. Kimi K2.5 was released 27 Jan 2026 by Moonshot AI.

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