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xAI: Grok 4.20 vs Xiaomi: MiMo-V2-Flash

Last updated at: 2026-05-10

Metric Grok 4.20 Grok 4.20 medium Release: 2026-03-31 MiMo-V2-Flash MiMo-V2-Flash medium Release: 2025-12-16
Score 6.9 7.2
Rank #68 #56
Reliability 10.0 10.0
Consistency 8.3 8.7
Tests Correct
Attempt pass rate 63.2% 66.7%
Flaky tests 4 3
Total Runs 57 57
Cost per result 7.559 0.341
Total Cost $0.756 $0.038
Input Price $1.250 / 1M $0.100 / 1M
Output Price $2.500 / 1M $0.300 / 1M
Output Tokens 1,784 12,399
Reasoning Tokens 128,233 115,182
Response Time (avg) 14.53s 21.71s
Response Time (max) 63.48s 96.01s
Response Time (total) 276.06s 282.29s

Top Models by Score

Score vs Total Cost

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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 3.95s 287 8,312
MiMo-V2-Flash 8.1 7.9 83.3% 1 15.85s 1,674 23,559
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-Flash 4.7 1.6 66.7% 1 13.03s 428 3,648
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-Flash 9.8 10.0 100.0% 0 75.68s 442 26,859
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-Flash 6.5 10.0 50.0% 0 0ms 153 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-Flash 5.9 7.2 55.6% 1 96.01s 8,374 42,461
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Grok 4.20 3.9 2.6 33.3% 1 24.48s 65 6,440
MiMo-V2-Flash 4.0 10.0 0.0% 0 4.20s 87 488
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Grok 4.20 7.3 6.0 83.3% 1 4.42s 40 5,474
MiMo-V2-Flash 10.0 10.0 100.0% 0 4.28s 75 3,504
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Grok 4.20 7.7 10.0 66.7% 0 6.20s 149 7,913
MiMo-V2-Flash 7.7 10.0 66.7% 0 3.77s 833 1,948
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-Flash 10.0 10.0 100.0% 0 27.78s 321 12,715
Trivia 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 63.48s 9 16,442
MiMo-V2-Flash 3.0 10.0 0.0% 0 1.96s 12 0

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