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

Last updated at: 2026-03-20

Metric Grok 4.20 Beta Grok 4.20 Beta medium Release: 2026-03-12 MiMo-V2-Pro MiMo-V2-Pro medium Release: 2026-03-18
Score 7.9 8.0
Rank #22 #20
Consistency 9.0 8.5
Tests Correct
Attempt pass rate 72.6% 76.5%
Flaky tests 2 3
Total Runs 51 45
Cost per result 5.525 1.110
Total Cost $0.608 $0.123
Input Price $2.000 / 1M $1.000 / 1M
Output Price $6.000 / 1M $3.000 / 1M
Output Tokens 1,487 1,875
Reasoning Tokens 87,922 26,959
Response Time (avg) 8.54s 9.78s
Response Time (max) 24.21s 64.71s
Response Time (total) 145.26s 156.45s

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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-Pro 10.0 10.0 100.0% 0 3.06s 223 1,107
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-Pro 4.7 1.6 66.7% 1 64.71s 380 14,186
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-Pro 7.3 5.8 83.3% 1 17.20s 260 7,484
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-Pro 5.3 10.0 33.3% 0 6.00s 155 1,048
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-Pro 10.0 10.0 100.0% 0 4.06s 198 424
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-Pro 9.9 10.0 100.0% 0 3.36s 83 667
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-Pro 7.0 7.2 55.6% 1 4.71s 313 1,179
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-Pro 10.0 10.0 100.0% 0 8.19s 263 864

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