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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 medium Release: 2026-01-27 Grok 4.20 Beta Grok 4.20 Beta none Release: 2026-03-12
Rank #30 #52
Avg Score 6.4 4.4
Consistency 7.5 9.1
Cost per result 2.171 2.214
Total Cost $0.196 $0.089
Tests Correct
Attempt pass rate 72.9% 33.3%
Flaky tests 5 2
Total Runs 48 48
Output Tokens 38,453 1,511
Reasoning Tokens 72,496 0
Response Time (avg) 69.83s 1.22s
Response Time (max) 137.29s 6.48s
Response Time (total) 628.45s 19.53s

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Score vs Total Cost

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Avg 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
Kimi K2.5 7.0 7.2 88.9% 1 85.28s 335 6,255
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 10.0 100.0% 0 71.37s 703 3,713
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 9.9 10.0 100.0% 0 49.78s 563 7,940
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 10.0 4.4 33.3% 2 137.29s 20,753 30,564
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 6.0 3.4 66.7% 1 69.73s 3,815 4,262
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 10.0 10.0 100.0% 0 92.47s 5,371 6,547
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 4.0 7.3 44.4% 1 45.40s 6,671 12,403
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 31.74s 242 812
Grok 4.20 Beta 10.0 10.0 100.0% 0 4.79s 189 0

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