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

Last updated at: 2026-04-14

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 7.4 7.0
Rank #39 #43
Consistency 9.6 6.8
Tests Correct
Attempt pass rate 64.8% 72.2%
Flaky tests 1 7
Total Runs 54 54
Cost per result 2.376 2.444
Total Cost $0.262 $0.220
Input Price $3.000 / 1M $0.383 / 1M
Output Price $15.000 / 1M $1.720 / 1M
Output Tokens 7,433 42,176
Reasoning Tokens 0 84,870
Response Time (avg) 4.98s 72.43s
Response Time (max) 23.84s 150.77s
Response Time (total) 54.83s 796.70s

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Score vs Total Cost

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Score vs Response Time (avg)

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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 10.0 10.0 100.0% 0 3.67s 523 0
Kimi K2.5 4.7 1.6 66.7% 1 150.77s 1,269 9,749
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 2.92s 536 0
Kimi K2.5 5.3 7.3 44.4% 1 45.40s 6,671 12,403
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

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