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xAI: Grok 4.20 vs Xiaomi: MiMo-V2.5-Pro

Last updated at: 2026-04-22

Metric Grok 4.20 Grok 4.20 medium Release: 2026-03-31 MiMo-V2.5-Pro MiMo-V2.5-Pro none Release: 2026-04-22
Score 7.0 5.8
Rank #49 #72
Consistency 7.8 8.3
Tests Correct
Attempt pass rate 66.7% 46.3%
Flaky tests 5 4
Total Runs 54 54
Cost per result 8.252 0.535
Total Cost $0.743 $0.033
Input Price $2.000 / 1M $1.000 / 1M
Output Price $6.000 / 1M $3.000 / 1M
Output Tokens 1,744 2,451
Reasoning Tokens 109,882 0
Response Time (avg) 10.33s 1.51s
Response Time (max) 29.87s 3.54s
Response Time (total) 185.87s 27.21s

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
Grok 4.20 8.2 7.9 83.3% 1 3.36s 280 8,476
MiMo-V2.5-Pro 2.9 7.9 8.3% 1 1.29s 366 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Grok 4.20 4.3 1.1 66.7% 1 24.33s 250 12,804
MiMo-V2.5-Pro 6.4 3.3 66.7% 1 2.39s 452 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Grok 4.20 10.0 10.0 100.0% 0 17.40s 232 9,556
MiMo-V2.5-Pro 3.0 10.0 0.0% 0 3.54s 596 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Grok 4.20 10.0 10.0 100.0% 0 4.17s 180 5,333
MiMo-V2.5-Pro 10.0 10.0 100.0% 0 1.32s 249 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Grok 4.20 5.3 10.0 33.3% 0 27.03s 375 49,339
MiMo-V2.5-Pro 5.3 10.0 33.3% 0 877ms 27 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Grok 4.20 5.8 2.8 66.7% 1 7.09s 47 4,252
MiMo-V2.5-Pro 4.5 10.0 0.0% 0 1.53s 140 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Grok 4.20 7.3 5.9 83.3% 1 4.42s 40 5,474
MiMo-V2.5-Pro 6.4 10.0 50.0% 0 1.03s 66 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Grok 4.20 6.4 7.7 55.6% 1 3.89s 143 8,028
MiMo-V2.5-Pro 6.7 4.7 77.8% 2 1.32s 297 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Grok 4.20 3.0 10.0 0.0% 0 13.68s 197 6,620
MiMo-V2.5-Pro 10.0 10.0 100.0% 0 3.30s 258 0

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