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MoonshotAI: Kimi K2.5 vs OpenAI: GPT-5.6 Terra

Summary

Kimi K2.5 (medium) vs GPT-5.6 Terra (low) benchmark comparison: GPT-5.6 Terra (low) leads on average score with 7.7 vs 7.5. GPT-5.6 Terra (low) has the lower benchmark cost at $0.343 vs $0.348. GPT-5.6 Terra (low) is faster at 4.88s vs 98.43s, with pass rates of 68.3% vs 74.6%.

Recommended model: GPT-5.6 Terra (low) - It has the best score here (7.7), while responding about 20.2x faster than Kimi K2.5 (medium).

Last updated at: 2026-07-09

Metric Kimi K2.5 Kimi K2.5 medium Release: 2026-01-27 GPT-5.6 Terra GPT-5.6 Terra low Release: 2026-07-09
Score 7.5 7.7
Rank #55 #47
Reliability 10.0 10.0
Consistency 6.9 8.1
Tests Correct
Attempt pass rate 68.3% 74.6%
Flaky tests 8 5
Total Runs 63 63
Cost per result 3.704 2.637
Total Cost $0.348 $0.343
Input Price $0.375 / 1M $2.500 / 1M
Output Price $2.025 / 1M $15.000 / 1M
Total Input Tokens 34,312 34,226
Output Tokens 48,379 1,943
Reasoning Tokens 157,747 15,201
Response Time (avg) 98.43s 4.88s
Response Time (max) 281.00s 19.85s
Response Time (total) 1378.03s 102.53s

Generation showcase

Hamster playing table tennis

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

#55 MoonshotAI: Kimi K2.5

medium
Cost
$0.030
Time
58.6s
Tokens
8,683 tok

#47 GPT-5.6 Terra

low
Cost
$0.034
Time
16.8s
Tokens
2,348 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 K2.5 7.3 5.8 83.3% 2 51.38s 634 2,789 8,880
GPT-5.6 Terra 8.3 10.0 75.0% 0 2.36s 606 171 602
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.5 6.1 4.6 66.7% 2 217.49s 6,935 5,705 74,693
GPT-5.6 Terra 6.6 4.6 77.8% 2 9.56s 7,302 429 6,821
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.5 10.0 10.0 100.0% 0 71.37s 11,280 703 3,713
GPT-5.6 Terra 10.0 10.0 100.0% 0 5.07s 11,019 312 349
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.5 10.0 10.0 100.0% 0 49.78s 7,020 563 7,940
GPT-5.6 Terra 10.0 10.0 100.0% 0 919ms 7,140 222 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.5 3.5 4.4 33.3% 2 137.29s 485 20,753 30,564
GPT-5.6 Terra 5.3 7.2 44.4% 1 8.34s 723 72 4,086
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.5 6.5 3.4 66.7% 1 69.73s 480 3,815 4,262
GPT-5.6 Terra 4.8 3.2 33.3% 1 3.52s 477 105 249
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.5 10.0 10.0 100.0% 0 92.47s 675 5,371 6,547
GPT-5.6 Terra 10.0 10.0 100.0% 0 1.48s 660 87 134
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.5 5.3 7.3 44.4% 1 43.23s 659 8,426 12,692
GPT-5.6 Terra 10.0 10.0 100.0% 0 4.46s 642 259 1,506
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.5 10.0 10.0 100.0% 0 31.74s 5,933 242 812
GPT-5.6 Terra 4.7 1.6 66.7% 1 6.69s 5,462 257 226
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Kimi K2.5 3.0 10.0 0.0% 0 83.95s 211 12 7,644
GPT-5.6 Terra 3.0 10.0 0.0% 0 5.95s 195 29 1,228

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