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MoonshotAI: Kimi K2.5 vs OpenAI: GPT-5.3 Chat

Last updated at: 2026-04-16

Metric Kimi K2.5 Kimi K2.5 medium Release: 2026-01-27 GPT-5.3 Chat GPT-5.3 Chat none Release: 2026-03-03
Score 7.0 7.7
Rank #45 #35
Consistency 6.8 8.6
Tests Correct
Attempt pass rate 72.2% 68.5%
Flaky tests 7 3
Total Runs 54 54
Cost per result 2.444 3.082
Total Cost $0.220 $0.340
Input Price $0.383 / 1M $1.750 / 1M
Output Price $1.720 / 1M $14.000 / 1M
Output Tokens 42,176 20,784
Reasoning Tokens 84,870 0
Response Time (avg) 72.43s 5.88s
Response Time (max) 150.77s 18.33s
Response Time (total) 796.70s 105.90s

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Score vs Total Cost

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Score vs Response Time (avg)

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Score vs Total Output Tokens

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.5 7.3 5.8 83.3% 2 51.38s 2,789 8,880
GPT-5.3 Chat 6.7 8.1 58.3% 1 3.86s 3,167 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.5 4.7 1.6 66.7% 1 150.77s 1,269 9,749
GPT-5.3 Chat 10.0 10.0 100.0% 0 9.32s 1,436 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.5 10.0 10.0 100.0% 0 71.37s 703 3,713
GPT-5.3 Chat 10.0 10.0 100.0% 0 11.96s 2,614 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.5 10.0 10.0 100.0% 0 49.78s 563 7,940
GPT-5.3 Chat 10.0 10.0 100.0% 0 2.21s 942 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.5 3.5 4.4 33.3% 2 137.29s 20,753 30,564
GPT-5.3 Chat 3.5 4.4 33.3% 2 13.01s 8,264 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.5 6.5 3.4 66.7% 1 69.73s 3,815 4,262
GPT-5.3 Chat 4.6 10.0 0.0% 0 1.99s 319 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.5 10.0 10.0 100.0% 0 92.47s 5,371 6,547
GPT-5.3 Chat 8.3 10.0 50.0% 0 3.29s 1,455 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.5 5.3 7.3 44.4% 1 45.40s 6,671 12,403
GPT-5.3 Chat 10.0 10.0 100.0% 0 2.93s 1,726 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.5 10.0 10.0 100.0% 0 31.74s 242 812
GPT-5.3 Chat 10.0 10.0 100.0% 0 8.36s 861 0

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