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OpenAI: GPT-5 Nano vs Qwen: Qwen3.5-Flash

The average score is effectively tied at 6.1 vs 6.1. Qwen3.5-Flash has the lower benchmark cost at $0.073 vs $0.114. Qwen3.5-Flash is faster at 25.28s vs 54.87s, with pass rates of 56.1% vs 39.4%.

Recommended modelQwen3.5-FlashIt has the best score here (6.1), while costing about 1.6x less than GPT-5 Nano (medium).

Last updated at: 2026-07-17

Metric GPT-5 Nano GPT-5 Nano medium Release: 2025-08-07 Qwen3.5-Flash Qwen3.5-Flash none Release: 2026-02-24
Score 6.1 6.1
Rank #121 #118
Reliability 10.0 10.0
Consistency 7.0 9.3
Tests Correct
Attempt pass rate 56.1% 39.4%
Flaky tests 8 2
Total Runs 66 66
Cost per result 1.267 0.933
Total Cost $0.114 $0.073
Input Price $0.050 / 1M $0.065 / 1M
Output Price $0.400 / 1M $0.260 / 1M
Total Input Tokens 94,935 282,347
Output Tokens 12,042 209,201
Reasoning Tokens 261,056 0
Response Time (avg) 54.87s 25.28s
Response Time (max) 227.89s 480.96s
Response Time (total) 822.99s 556.24s

Hamster playing table tennis

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

#121 GPT-5 Nano

medium
Cost
$0.006
Time
108.5s
Tokens
13,209 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-5 Nano 7.0 7.7 55.6% 1 41.62s 7,305 740 41,152
Qwen3.5-Flash 5.5 10.0 33.3% 0 850ms 7,913 519 0

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