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xAI: Grok 4.20 Beta vs Xiaomi: MiMo-V2-Omni

Last updated at: 2026-03-21

Metric Grok 4.20 Beta Grok 4.20 Beta medium Release: 2026-03-12 MiMo-V2-Omni MiMo-V2-Omni medium Release: 2026-03-18
Score 7.9 7.9
Rank #23 #22
Consistency 9.0 10.0
Tests Correct
Attempt pass rate 72.6% 64.7%
Flaky tests 2 0
Total Runs 51 17
Cost per result 5.525 0.763
Total Cost $0.608 $0.084
Input Price $2.000 / 1M $0.400 / 1M
Output Price $6.000 / 1M $2.000 / 1M
Output Tokens 1,487 663
Reasoning Tokens 87,922 39,001
Response Time (avg) 8.54s 13.71s
Response Time (max) 24.21s 158.78s
Response Time (total) 145.26s 233.06s

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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
Grok 4.20 Beta 8.7 7.9 91.7% 1 3.16s 268 7,583
MiMo-V2-Omni 10.0 10.0 100.0% 0 2.11s 112 402
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Grok 4.20 Beta 10.0 10.0 100.0% 0 20.93s 227 12,212
MiMo-V2-Omni 10.0 10.0 100.0% 0 19.29s 131 2,807
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Grok 4.20 Beta 10.0 10.0 100.0% 0 4.01s 180 5,281
MiMo-V2-Omni 10.0 10.0 100.0% 0 2.29s 87 323
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Grok 4.20 Beta 5.3 10.0 33.3% 0 21.33s 251 40,255
MiMo-V2-Omni 3.0 10.0 0.0% 0 55.12s 13 33,279
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Grok 4.20 Beta 10.0 10.0 100.0% 0 5.78s 72 3,440
MiMo-V2-Omni 10.0 10.0 100.0% 0 2.86s 58 202
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Grok 4.20 Beta 8.3 10.0 50.0% 0 4.97s 57 7,107
MiMo-V2-Omni 8.3 10.0 50.0% 0 4.92s 35 201
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Grok 4.20 Beta 8.2 7.2 88.9% 1 3.85s 249 6,660
MiMo-V2-Omni 6.5 10.0 33.3% 0 3.88s 126 481
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Grok 4.20 Beta 3.0 10.0 0.0% 0 12.39s 183 5,384
MiMo-V2-Omni 10.0 10.0 100.0% 0 11.07s 101 1,306

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