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StepFun: Step 3.5 Flash vs Xiaomi: MiMo-V2.5

Last updated at: 2026-04-22

Metric Step 3.5 Flash Step 3.5 Flash medium Release: 2026-02-01 MiMo-V2.5 MiMo-V2.5 medium Release: 2026-04-22
Score 7.9 7.8
Rank #31 #35
Consistency 9.1 8.6
Tests Correct
Attempt pass rate 70.6% 74.1%
Flaky tests 2 3
Total Runs 49 54
Cost per result 0.000 2.102
Total Cost $0.000 $0.253
Input Price $0.100 / 1M $0.400 / 1M
Output Price $0.300 / 1M $2.000 / 1M
Output Tokens 71,904 2,840
Reasoning Tokens 155,607 116,242
Response Time (avg) 26.78s 13.71s
Response Time (max) 170.45s 86.93s
Response Time (total) 294.58s 246.73s

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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
Step 3.5 Flash 10.0 10.0 100.0% 0 13.56s 14,376 17,668
MiMo-V2.5 10.0 10.0 100.0% 0 1.98s 303 2,022
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Step 3.5 Flash 10.0 10.0 100.0% 0 29.57s 1,176 12,984
MiMo-V2.5 10.0 10.0 100.0% 0 16.86s 363 7,609
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Step 3.5 Flash 10.0 10.0 100.0% 0 15.01s 600 13,886
MiMo-V2.5 2.7 5.7 16.7% 1 6.33s 306 5,714
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Step 3.5 Flash 5.3 7.2 44.4% 1 170.45s 45,350 90,436
MiMo-V2.5 5.3 10.0 33.3% 0 34.53s 507 49,478
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Step 3.5 Flash 5.5 10.0 0.0% 0 6.54s 2,214 2,584
MiMo-V2.5 3.8 2.5 33.3% 1 1.55s 118 170
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Step 3.5 Flash 8.5 6.8 83.3% 1 4.98s 2,284 3,412
MiMo-V2.5 9.9 10.0 100.0% 0 1.80s 88 801
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Step 3.5 Flash 5.3 10.0 33.3% 0 7.72s 5,629 10,835
MiMo-V2.5 8.2 7.2 88.9% 1 20.60s 364 33,211
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Step 3.5 Flash 10.0 10.0 100.0% 0 11.91s 275 3,802
MiMo-V2.5 10.0 10.0 100.0% 0 7.29s 303 2,424
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Step 3.5 Flash - - - - - - - -
MiMo-V2.5 10.0 10.0 100.0% 0 31.48s 488 14,813

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