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MoonshotAI: Kimi K2.6 vs OpenAI: GPT-5 Nano

Last updated at: 2026-06-04

Metric Kimi K2.6 Kimi K2.6 none Release: 2026-04-20 Free Available GPT-5 Nano GPT-5 Nano medium Release: 2025-08-07
Score 5.5 6.3
Rank #124 #94
Reliability 10.0 10.0
Consistency 9.2 7.3
Tests Correct
Attempt pass rate 36.5% 57.1%
Flaky tests 2 7
Total Runs 63 63
Cost per result 1.267 0.897
Total Cost $0.079 $0.081
Input Price $0.684 / 1M $0.050 / 1M
Output Price $3.420 / 1M $0.400 / 1M
Total Input Tokens 32,916 34,108
Output Tokens 16,410 5,464
Reasoning Tokens 0 192,064
Response Time (avg) 13.27s 42.51s
Response Time (max) 238.89s 204.02s
Response Time (total) 278.57s 595.09s

Top Models by Score

Score vs Total Cost

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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) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.6 4.6 10.0 25.0% 0 1.39s 618 471 0
GPT-5 Nano 6.5 7.9 58.3% 1 25.50s 606 1,221 21,184
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.6 5.5 9.8 33.3% 0 82.57s 5,986 14,754 0
GPT-5 Nano 7.0 7.7 55.6% 1 41.62s 7,305 740 41,152
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.6 3.0 10.0 0.0% 0 3.38s 11,269 290 0
GPT-5 Nano 10.0 10.0 100.0% 0 65.96s 11,019 578 17,984
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.6 10.0 10.0 100.0% 0 1.32s 7,014 201 0
GPT-5 Nano 3.7 1.7 50.0% 2 21.42s 7,140 453 10,560
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.6 5.3 7.2 44.4% 1 1.48s 732 42 0
GPT-5 Nano 5.2 4.4 55.6% 2 204.02s 619 237 64,448
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.6 5.4 3.5 33.3% 1 1.55s 477 138 0
GPT-5 Nano 4.1 10.0 0.0% 0 17.51s 477 202 4,608
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.6 6.5 10.0 50.0% 0 1.64s 669 72 0
GPT-5 Nano 9.8 10.0 100.0% 0 15.64s 660 312 4,736
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.6 3.1 9.9 0.0% 0 1.40s 651 185 0
GPT-5 Nano 5.3 7.2 44.4% 1 20.63s 642 929 14,272
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.6 10.0 10.0 100.0% 0 4.46s 5,286 240 0
GPT-5 Nano 10.0 10.0 100.0% 0 33.30s 5,445 558 6,976
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.6 3.0 10.0 0.0% 0 1.36s 214 17 0
GPT-5 Nano 3.0 10.0 0.0% 0 20.13s 195 234 6,144

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