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OpenAI: GPT-5 Mini vs StepFun: Step 3.7 Flash

The average score is effectively tied at 8.1 vs 8.0. GPT-5 Mini (medium) has the lower benchmark cost at $0.237 vs $0.515. Step 3.7 Flash (medium) is faster at 26.37s vs 27.63s, with pass rates of 63.6% vs 72.7%.

Recommended modelGPT-5 Mini (medium)It has the best score here (8.1), while costing about 2.2x less than Step 3.7 Flash (medium).

Last updated at: 2026-07-17

Metric GPT-5 Mini GPT-5 Mini medium Release: 2025-08-07 Step 3.7 Flash Step 3.7 Flash medium Release: 2026-05-29
Score 8.1 8.0
Rank #26 #28
Reliability 10.0 9.9
Consistency 8.8 8.9
Tests Correct
Attempt pass rate 63.6% 72.7%
Flaky tests 3 3
Total Runs 66 64
Cost per result 1.971 3.676
Total Cost $0.237 $0.515
Input Price $0.250 / 1M $0.200 / 1M
Output Price $2.000 / 1M $1.150 / 1M
Total Input Tokens 98,374 114,062
Output Tokens 14,434 427,572
Reasoning Tokens 91,498 0
Response Time (avg) 27.63s 26.37s
Response Time (max) 111.48s 152.83s
Response Time (total) 607.92s 580.25s

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#26 GPT-5 Mini

medium
Cost
$0.007
Time
42.9s
Tokens
3,432 tok

#28 Step 3.7 Flash

medium
Cost
$0.006
Time
46.2s
Tokens
4,466 tok

Top Models by Score

Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

Score vs Total Output Tokens

Category Breakdown

Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
GPT-5 Mini 10.0 10.0 100.0% 0 27.63s 7,302 658 17,152
Step 3.7 Flash 8.8 7.8 88.9% 1 27.42s 7,437 44,797 0

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