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OpenAI: gpt-oss-120b vs StepFun: Step 3.5 Flash

Last updated at: 2026-04-11

Metric gpt-oss-120b gpt-oss-120b medium Release: 2025-08-05 Free Available Step 3.5 Flash Step 3.5 Flash none Release: 2026-02-01
Score 5.8 3.0
Rank #65 #93
Consistency 7.2 10.0
Tests Correct
Attempt pass rate 51.9% 0.0%
Flaky tests 6 0
Total Runs 54 3
Cost per result 0.144 0.000
Total Cost $0.011 $0.000
Input Price $0.039 / 1M $0.100 / 1M
Output Price $0.190 / 1M $0.300 / 1M
Output Tokens 13,493 0
Reasoning Tokens 36,879 0
Response Time (avg) 16.08s 0ms
Response Time (max) 50.92s 0ms
Response Time (total) 176.88s 0ms

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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
gpt-oss-120b 6.7 9.9 50.0% 0 10.21s 3,518 2,177
Step 3.5 Flash - - - - - - - -
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
gpt-oss-120b 4.3 1.1 66.7% 1 26.33s 228 2,549
Step 3.5 Flash 3.0 10.0 0.0% 0 0ms 0 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
gpt-oss-120b 10.0 10.0 100.0% 0 31.18s 694 5,072
Step 3.5 Flash - - - - - - - -
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
gpt-oss-120b 6.4 5.9 66.7% 1 1.98s 241 1,114
Step 3.5 Flash - - - - - - - -
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
gpt-oss-120b 2.9 4.4 22.2% 2 50.92s 6,784 20,606
Step 3.5 Flash - - - - - - - -
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
gpt-oss-120b 4.3 10.0 0.0% 0 7.90s 107 387
Step 3.5 Flash - - - - - - - -
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
gpt-oss-120b 9.9 10.0 100.0% 0 7.63s 126 1,799
Step 3.5 Flash - - - - - - - -
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
gpt-oss-120b 3.2 4.7 22.2% 2 11.80s 1,508 2,092
Step 3.5 Flash - - - - - - - -
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
gpt-oss-120b 9.8 10.0 100.0% 0 6.91s 287 1,083
Step 3.5 Flash - - - - - - - -

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