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OpenAI: gpt-oss-120b vs Qwen: Qwen3.5-Flash

Last updated at: 2026-04-14

Metric gpt-oss-120b gpt-oss-120b medium Release: 2025-08-05 Free Available Qwen3.5-Flash Qwen3.5-Flash none Release: 2026-02-24
Score 5.8 6.2
Rank #65 #56
Consistency 7.2 9.6
Tests Correct
Attempt pass rate 51.9% 46.3%
Flaky tests 6 1
Total Runs 54 54
Cost per result 0.144 0.070
Total Cost $0.011 $0.006
Input Price $0.039 / 1M $0.065 / 1M
Output Price $0.190 / 1M $0.260 / 1M
Output Tokens 13,493 4,266
Reasoning Tokens 36,879 0
Response Time (avg) 16.08s 3.25s
Response Time (max) 50.92s 13.73s
Response Time (total) 176.88s 58.44s

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Score vs Total Cost

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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
gpt-oss-120b 6.7 9.9 50.0% 0 10.21s 3,518 2,177
Qwen3.5-Flash 3.5 8.3 8.3% 1 1.32s 690 0
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
Qwen3.5-Flash 10.0 10.0 100.0% 0 1.29s 489 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
Qwen3.5-Flash 3.0 10.0 0.0% 0 6.22s 1,794 0
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
Qwen3.5-Flash 10.0 10.0 100.0% 0 1.57s 243 0
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
Qwen3.5-Flash 7.7 10.0 66.7% 0 905ms 15 0
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
Qwen3.5-Flash 10.0 10.0 100.0% 0 803ms 100 0
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
Qwen3.5-Flash 6.3 10.0 50.0% 0 8.81s 63 0
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
Qwen3.5-Flash 3.3 10.0 0.0% 0 5.90s 608 0
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
Qwen3.5-Flash 10.0 10.0 100.0% 0 3.67s 264 0

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