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MoonshotAI: Kimi K2.6 vs OpenAI: GPT-5.3 Chat

Last updated at: 2026-04-21

Metric Kimi K2.6 Kimi K2.6 medium Release: 2026-04-20 GPT-5.3 Chat GPT-5.3 Chat none Release: 2026-03-03
Score 7.7 7.7
Rank #34 #36
Consistency 8.3 8.6
Tests Correct
Attempt pass rate 74.1% 68.5%
Flaky tests 4 3
Total Runs 54 54
Cost per result 6.563 3.082
Total Cost $0.722 $0.340
Input Price $0.600 / 1M $1.750 / 1M
Output Price $2.800 / 1M $14.000 / 1M
Output Tokens 80,759 20,784
Reasoning Tokens 179,814 0
Response Time (avg) 45.20s 5.88s
Response Time (max) 215.85s 18.33s
Response Time (total) 768.37s 105.90s

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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 K2.6 7.0 8.0 66.7% 1 11.59s 7,115 8,934
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 K2.6 10.0 10.0 100.0% 0 106.96s 3,236 18,817
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 K2.6 10.0 10.0 100.0% 0 40.96s 711 13,876
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 K2.6 10.0 10.0 100.0% 0 20.38s 316 11,305
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 K2.6 5.3 7.2 44.4% 1 202.38s 47,035 98,262
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 K2.6 10.0 10.0 100.0% 0 17.83s 3,981 4,472
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 K2.6 10.0 10.0 100.0% 0 12.53s 3,977 5,269
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 K2.6 5.0 5.2 44.5% 2 25.59s 14,140 17,868
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 K2.6 10.0 10.0 100.0% 0 8.92s 248 1,011
GPT-5.3 Chat 10.0 10.0 100.0% 0 8.36s 861 0

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