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MoonshotAI: Kimi K2.5 vs OpenAI: GPT-5 Mini

Last updated at: 2026-04-16

Metric Kimi K2.5 Kimi K2.5 medium Release: 2026-01-27 GPT-5 Mini GPT-5 Mini medium Release: 2025-08-07
Score 7.0 7.0
Rank #45 #44
Consistency 6.8 8.6
Tests Correct
Attempt pass rate 72.2% 61.1%
Flaky tests 7 3
Total Runs 54 54
Cost per result 2.444 1.415
Total Cost $0.220 $0.128
Input Price $0.383 / 1M $0.250 / 1M
Output Price $1.720 / 1M $2.000 / 1M
Output Tokens 42,176 6,379
Reasoning Tokens 84,870 53,482
Response Time (avg) 72.43s 23.98s
Response Time (max) 150.77s 88.15s
Response Time (total) 796.70s 431.56s

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Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

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 Mini 7.1 7.6 66.7% 1 13.86s 1,715 6,378
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 Mini 10.0 10.0 100.0% 0 23.18s 483 4,160
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 Mini 10.0 10.0 100.0% 0 88.15s 754 11,520
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 Mini 10.0 10.0 100.0% 0 12.58s 453 3,200
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 Mini 3.6 7.2 22.2% 1 44.63s 293 14,016
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 Mini 4.5 10.0 0.0% 0 13.50s 349 1,856
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 Mini 8.0 6.6 83.3% 1 15.66s 318 4,992
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 Mini 5.6 9.8 33.3% 0 14.09s 1,527 5,760
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 Mini 10.0 10.0 100.0% 0 18.64s 487 1,600

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