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

The average score is effectively tied at 6.1 vs 6.1. gpt-oss-120b (medium) has the lower benchmark cost at $0.019 vs $0.073. gpt-oss-120b (medium) is faster at 21.91s vs 25.28s, with pass rates of 50.0% vs 39.4%.

Recommended modelgpt-oss-120b (medium)It has the best score here (6.1), while costing about 3.9x less than Qwen3.5-Flash.

Last updated at: 2026-07-17

Metric gpt-oss-120b gpt-oss-120b medium Release: 2025-08-05 Qwen3.5-Flash Qwen3.5-Flash none Release: 2026-02-24
Score 6.1 6.1
Rank #115 #118
Reliability 10.0 10.0
Consistency 8.0 9.3
Tests Correct
Attempt pass rate 50.0% 39.4%
Flaky tests 5 2
Total Runs 66 66
Cost per result 0.221 0.933
Total Cost $0.019 $0.073
Input Price $0.037 / 1M $0.065 / 1M
Output Price $0.170 / 1M $0.260 / 1M
Total Input Tokens 108,747 282,347
Output Tokens 29,772 209,201
Reasoning Tokens 68,044 0
Response Time (avg) 21.91s 25.28s
Response Time (max) 68.16s 480.96s
Response Time (total) 328.70s 556.24s

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#115 gpt-oss-120b

medium
Cost
$0.001
Time
26.7s
Tokens
555 tok

#118 Qwen3.5-Flash

none
Cost
$0.003
Time
47.4s
Tokens
7,799 tok

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

Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
gpt-oss-120b 5.9 7.0 55.6% 1 38.37s 7,782 3,365 11,973
Qwen3.5-Flash 5.5 10.0 33.3% 0 850ms 7,913 519 0

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