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

Last updated at: 2026-05-29

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 5.9 5.9
Rank #103 #104
Reliability 10.0 10.0
Consistency 7.9 9.7
Tests Correct
Attempt pass rate 50.0% 41.7%
Flaky tests 5 1
Total Runs 60 60
Cost per result 0.151 0.073
Total Cost $0.013 $0.006
Input Price $0.039 / 1M $0.065 / 1M
Output Price $0.180 / 1M $0.260 / 1M
Output Tokens 17,495 4,270
Reasoning Tokens 46,878 0
Response Time (avg) 22.41s 3.74s
Response Time (max) 68.16s 27.18s
Response Time (total) 291.35s 74.71s

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

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 3.9 5.6 33.3% 1 47.24s 847 8,618
Qwen3.5-Flash 6.8 10.0 50.0% 0 993ms 513 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 5.3 7.2 44.4% 1 21.71s 1,790 2,264
Qwen3.5-Flash 3.1 10.0 0.0% 0 10.89s 579 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
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
gpt-oss-120b 3.0 10.0 0.0% 0 26.51s 3,101 3,758
Qwen3.5-Flash 3.0 10.0 0.0% 0 588ms 9 0

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