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OpenAI: gpt-oss-120b vs Qwen: Qwen3.5 Plus 2026-04-20

Last updated at: 2026-04-27

Metric gpt-oss-120b gpt-oss-120b medium Release: 2025-08-05 Free Available Qwen3.5 Plus 2026-04-20 Qwen3.5 Plus 2026-04-20 none Release: 2026-04-20
Score 5.8 5.8
Rank #86 #88
Reliability N/A 9.8
Consistency 7.2 8.3
Tests Correct
Attempt pass rate 51.9% 42.6%
Flaky tests 6 4
Total Runs 54 54
Cost per result 0.144 0.397
Total Cost $0.011 $0.024
Input Price $0.000 / 1M $0.400 / 1M
Output Price $0.000 / 1M $2.400 / 1M
Output Tokens 13,493 4,645
Reasoning Tokens 36,879 0
Response Time (avg) 16.08s 3.18s
Response Time (max) 50.92s 13.32s
Response Time (total) 176.88s 57.24s

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 Plus 2026-04-20 4.8 10.0 25.0% 0 1.88s 557 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 Plus 2026-04-20 5.3 3.4 33.3% 1 3.20s 450 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 Plus 2026-04-20 2.8 1.6 33.3% 1 13.32s 2,275 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 Plus 2026-04-20 10.0 10.0 100.0% 0 2.82s 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 Plus 2026-04-20 5.3 10.0 33.3% 0 4.43s 18 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 Plus 2026-04-20 4.8 10.0 0.0% 0 1.41s 119 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 Plus 2026-04-20 6.2 5.8 66.7% 1 1.17s 68 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 Plus 2026-04-20 4.8 7.9 22.2% 1 2.03s 618 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 Plus 2026-04-20 10.0 10.0 100.0% 0 4.42s 297 0

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