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Anthropic: Claude Sonnet 4.6 vs MoonshotAI: Kimi K2.5

Last updated at: 2026-05-29

Metric Claude Sonnet 4.6 Claude Sonnet 4.6 none Release: 2026-02-17 Kimi K2.5 Kimi K2.5 medium Release: 2026-01-27
Score 7.0 6.7
Rank #78 #85
Reliability 10.0 10.0
Consistency 9.7 6.8
Tests Correct
Attempt pass rate 58.3% 66.7%
Flaky tests 1 8
Total Runs 60 60
Cost per result 2.782 3.486
Total Cost $0.306 $0.314
Input Price $3.000 / 1M $0.400 / 1M
Output Price $15.000 / 1M $1.900 / 1M
Output Tokens 9,450 48,374
Reasoning Tokens 0 128,473
Response Time (avg) 5.27s 89.02s
Response Time (max) 23.84s 281.00s
Response Time (total) 68.50s 1157.32s

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) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 4.8 10.0 25.0% 0 2.94s 1,214 0
Kimi K2.5 7.3 5.8 83.3% 2 51.38s 2,789 8,880
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 6.8 10.0 50.0% 0 6.73s 2,112 0
Kimi K2.5 4.1 1.9 50.0% 2 215.89s 5,700 45,419
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 9.5 10.0 100.0% 0 23.84s 3,766 0
Kimi K2.5 10.0 10.0 100.0% 0 71.37s 703 3,713
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 3.43s 252 0
Kimi K2.5 10.0 10.0 100.0% 0 49.78s 563 7,940
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 7.7 10.0 66.7% 0 3.54s 413 0
Kimi K2.5 3.5 4.4 33.3% 2 137.29s 20,753 30,564
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 6.1 3.1 66.7% 1 2.56s 192 0
Kimi K2.5 6.5 3.4 66.7% 1 69.73s 3,815 4,262
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 6.5 10.0 50.0% 0 1.96s 90 0
Kimi K2.5 10.0 10.0 100.0% 0 92.47s 5,371 6,547
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 7.7 10.0 66.7% 0 2.53s 533 0
Kimi K2.5 5.3 7.3 44.4% 1 43.23s 8,426 12,692
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 10.0 10.0 100.0% 0 4.11s 447 0
Kimi K2.5 10.0 10.0 100.0% 0 31.74s 242 812
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Claude Sonnet 4.6 3.0 10.0 0.0% 0 4.67s 431 0
Kimi K2.5 3.0 10.0 0.0% 0 83.95s 12 7,644

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