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DeepSeek: DeepSeek V4 Flash vs StepFun: Step 3.5 Flash

Last updated at: 2026-04-24

Metric DeepSeek V4 Flash DeepSeek V4 Flash high Release: 2026-04-24 Step 3.5 Flash Step 3.5 Flash medium Release: 2026-02-01
Score 7.8 7.9
Rank #35 #34
Consistency 7.8 9.1
Tests Correct
Attempt pass rate 79.6% 70.6%
Flaky tests 5 2
Total Runs 52 49
Cost per result 0.189 0.000
Total Cost $0.021 $0.000
Input Price $0.140 / 1M $0.100 / 1M
Output Price $0.280 / 1M $0.300 / 1M
Output Tokens 1,757 71,904
Reasoning Tokens 55,907 155,607
Response Time (avg) 47.47s 26.78s
Response Time (max) 255.28s 170.45s
Response Time (total) 854.45s 294.58s

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Score vs Response Time (avg)

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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
DeepSeek V4 Flash 8.3 10.0 75.0% 0 28.51s 140 7,770
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
DeepSeek V4 Flash 10.0 10.0 100.0% 0 62.48s 369 9,361
Step 3.5 Flash - - - - - - - -
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
DeepSeek V4 Flash 10.0 10.0 100.0% 0 76.57s 465 7,347
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
DeepSeek V4 Flash 10.0 10.0 100.0% 0 28.03s 201 1,179
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
DeepSeek V4 Flash 4.1 4.4 44.5% 2 112.69s 19 24,857
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
DeepSeek V4 Flash 6.1 3.1 66.7% 1 25.15s 79 632
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
DeepSeek V4 Flash 10.0 10.0 100.0% 0 15.36s 63 1,622
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
DeepSeek V4 Flash 6.4 4.5 77.8% 2 25.53s 193 2,597
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
DeepSeek V4 Flash 10.0 10.0 100.0% 0 74.73s 228 542
Step 3.5 Flash 10.0 10.0 100.0% 0 11.91s 275 3,802

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