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OpenAI: gpt-oss-120b vs Qwen: Qwen3.5-27B

Last updated at: 2026-04-14

Metric gpt-oss-120b gpt-oss-120b medium Release: 2025-08-05 Free Available Qwen3.5-27B Qwen3.5-27B none Release: 2026-02-24
Score 5.8 5.9
Rank #65 #64
Consistency 7.2 9.2
Tests Correct
Attempt pass rate 51.9% 38.9%
Flaky tests 6 2
Total Runs 54 54
Cost per result 0.144 0.265
Total Cost $0.011 $0.016
Input Price $0.039 / 1M $0.195 / 1M
Output Price $0.190 / 1M $1.560 / 1M
Output Tokens 13,493 3,545
Reasoning Tokens 36,879 0
Response Time (avg) 16.08s 1.74s
Response Time (max) 50.92s 9.39s
Response Time (total) 176.88s 31.32s

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
Qwen3.5-27B 4.8 10.0 25.0% 0 788ms 267 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
Qwen3.5-27B 10.0 10.0 100.0% 0 2.51s 381 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
Qwen3.5-27B 2.8 1.6 33.3% 1 9.39s 1,461 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
Qwen3.5-27B 10.0 10.0 100.0% 0 1.43s 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
Qwen3.5-27B 3.0 10.0 0.0% 0 540ms 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
Qwen3.5-27B 5.0 10.0 0.0% 0 2.51s 126 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
Qwen3.5-27B 4.8 10.0 0.0% 0 815ms 69 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
Qwen3.5-27B 6.7 7.9 55.6% 1 1.37s 680 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
Qwen3.5-27B 10.0 10.0 100.0% 0 3.54s 303 0

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