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MoonshotAI: Kimi K2.6 vs StepFun: Step 3.5 Flash

Last updated at: 2026-04-20

Metric Kimi K2.6 Kimi K2.6 medium Release: 2026-04-20 Step 3.5 Flash Step 3.5 Flash medium Release: 2026-02-01
Score 7.7 7.9
Rank #34 #30
Consistency 8.3 9.1
Tests Correct
Attempt pass rate 74.1% 70.6%
Flaky tests 4 2
Total Runs 54 49
Cost per result 6.563 0.000
Total Cost $0.722 $0.000
Input Price $0.950 / 1M $0.100 / 1M
Output Price $4.000 / 1M $0.300 / 1M
Output Tokens 80,759 71,904
Reasoning Tokens 179,814 155,607
Response Time (avg) 45.20s 26.78s
Response Time (max) 215.85s 170.45s
Response Time (total) 768.37s 294.58s

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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
Kimi K2.6 7.0 8.0 66.7% 1 11.59s 7,115 8,934
Step 3.5 Flash 10.0 10.0 100.0% 0 13.56s 14,376 17,668
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.6 10.0 10.0 100.0% 0 106.96s 3,236 18,817
Step 3.5 Flash - - - - - - - -
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.6 10.0 10.0 100.0% 0 40.96s 711 13,876
Step 3.5 Flash 10.0 10.0 100.0% 0 29.57s 1,176 12,984
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.6 10.0 10.0 100.0% 0 20.38s 316 11,305
Step 3.5 Flash 10.0 10.0 100.0% 0 15.01s 600 13,886
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.6 5.3 7.2 44.4% 1 202.38s 47,035 98,262
Step 3.5 Flash 5.3 7.2 44.4% 1 170.45s 45,350 90,436
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.6 10.0 10.0 100.0% 0 17.83s 3,981 4,472
Step 3.5 Flash 5.5 10.0 0.0% 0 6.54s 2,214 2,584
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.6 10.0 10.0 100.0% 0 12.53s 3,977 5,269
Step 3.5 Flash 8.5 6.8 83.3% 1 4.98s 2,284 3,412
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.6 5.0 5.2 44.5% 2 25.59s 14,140 17,868
Step 3.5 Flash 5.3 10.0 33.3% 0 7.72s 5,629 10,835
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Kimi K2.6 10.0 10.0 100.0% 0 8.92s 248 1,011
Step 3.5 Flash 10.0 10.0 100.0% 0 11.91s 275 3,802

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