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MoonshotAI: Kimi K2.5 vs xAI: Grok 4.20 Beta

Last updated at: 2026-03-12

Metric Kimi K2.5 Kimi K2.5 none Release: 2026-01-27 Grok 4.20 Beta Grok 4.20 Beta none Release: 2026-03-12
Rank #54 #52
Avg Score 4.1 4.4
Consistency 8.6 9.1
Cost per result 0.295 2.214
Total Cost $0.015 $0.089
Tests Correct
Attempt pass rate 39.6% 33.3%
Flaky tests 3 2
Total Runs 48 48
Output Tokens 2,000 1,511
Reasoning Tokens 0 0
Response Time (avg) 11.91s 1.22s
Response Time (max) 42.13s 6.48s
Response Time (total) 107.16s 19.53s

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Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.5 2.7 7.9 11.1% 1 11.38s 363 0
Grok 4.20 Beta 3.3 7.9 22.2% 1 562ms 245 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.5 10.0 2.1 33.3% 1 19.16s 748 0
Grok 4.20 Beta 10.0 10.0 0.0% 0 6.48s 282 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.5 5.4 5.8 83.3% 1 42.13s 187 0
Grok 4.20 Beta 9.9 10.0 100.0% 0 601ms 197 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.5 4.0 10.0 33.3% 0 4.38s 29 0
Grok 4.20 Beta 10.0 10.0 0.0% 0 611ms 160 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.5 10.0 10.0 100.0% 0 4.00s 76 0
Grok 4.20 Beta 5.0 10.0 0.0% 0 541ms 87 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.5 5.5 10.0 50.0% 0 2.67s 60 0
Grok 4.20 Beta 4.5 10.0 0.0% 0 687ms 60 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.5 10.0 10.0 0.0% 0 4.73s 317 0
Grok 4.20 Beta 4.0 7.2 55.6% 1 541ms 291 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.5 10.0 10.0 100.0% 0 13.99s 220 0
Grok 4.20 Beta 10.0 10.0 100.0% 0 4.79s 189 0

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