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MoonshotAI: Kimi K2.6 vs OpenAI: GPT-5.6 Luna

Summary

Kimi K2.6 (medium) vs GPT-5.6 Luna (high) benchmark comparison: Kimi K2.6 (medium) leads on average score with 7.8 vs 7.7. Kimi K2.6 (medium) has the lower benchmark cost at $0.888 vs $0.924. GPT-5.6 Luna (high) is faster at 18.39s vs 71.67s, with pass rates of 65.1% vs 71.4%.

Recommended model: GPT-5.6 Luna (high) - Its score stays close to the best score here (7.7 vs 7.8), while responding about 3.9x faster than Kimi K2.6 (medium).

Last updated at: 2026-07-09

Metric Kimi K2.6 Kimi K2.6 medium Release: 2026-04-20 Free Available GPT-5.6 Luna GPT-5.6 Luna high Release: 2026-07-09
Score 7.8 7.7
Rank #43 #50
Reliability 10.0 10.0
Consistency 8.6 8.8
Tests Correct
Attempt pass rate 65.1% 71.4%
Flaky tests 3 3
Total Runs 63 63
Cost per result 8.358 6.594
Total Cost $0.888 $0.924
Input Price $0.660 / 1M $1.000 / 1M
Output Price $3.410 / 1M $6.000 / 1M
Total Input Tokens 29,450 35,699
Output Tokens 102,923 2,079
Reasoning Tokens 254,094 145,816
Response Time (avg) 71.67s 18.39s
Response Time (max) 406.78s 111.09s
Response Time (total) 1433.36s 386.24s

Generation showcase

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#43 MoonshotAI: Kimi K2.6

medium
Cost
$0.013
Time
103.4s
Tokens
3,620 tok

#50 GPT-5.6 Luna

high
Cost
$0.033
Time
34.2s
Tokens
5,484 tok

Top Models by Score

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) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.6 7.0 8.0 66.7% 1 11.59s 618 7,115 8,934
GPT-5.6 Luna 8.3 10.0 75.0% 0 2.99s 606 162 1,265
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.6 5.7 8.6 33.3% 0 214.42s 2,925 9,970 77,189
GPT-5.6 Luna 5.5 4.7 55.6% 2 15.63s 7,302 510 17,746
Combined 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 40.96s 11,271 711 13,876
GPT-5.6 Luna 10.0 10.0 100.0% 0 13.29s 12,500 357 2,911
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 20.38s 7,014 316 11,305
GPT-5.6 Luna 10.0 10.0 100.0% 0 2.18s 7,140 234 470
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% 1 202.38s 326 47,035 98,262
GPT-5.6 Luna 7.7 10.0 66.7% 0 78.96s 723 69 96,395
General Intelligence 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 17.83s 477 3,981 4,472
GPT-5.6 Luna 5.0 10.0 0.0% 0 3.65s 477 117 563
Instructions following 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 12.53s 669 3,977 5,269
GPT-5.6 Luna 9.9 10.0 100.0% 0 1.79s 660 97 481
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.6 6.0 7.4 55.6% 1 25.06s 651 13,860 17,599
GPT-5.6 Luna 7.6 7.2 77.8% 1 14.55s 642 242 18,281
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 8.92s 5,286 248 1,011
GPT-5.6 Luna 10.0 10.0 100.0% 0 4.98s 5,454 260 324
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% 0 130.27s 213 15,710 16,177
GPT-5.6 Luna 3.0 10.0 0.0% 0 17.00s 195 31 7,380

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