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OpenAI: GPT-5 Nano vs Qwen: Qwen3.5-27B

Last updated at: 2026-05-29

Metric GPT-5 Nano GPT-5 Nano medium Release: 2025-08-07 Qwen3.5-27B Qwen3.5-27B none Release: 2026-02-24
Score 6.1 5.8
Rank #101 #112
Reliability 10.0 10.0
Consistency 7.1 9.3
Tests Correct
Attempt pass rate 55.0% 40.0%
Flaky tests 7 2
Total Runs 60 60
Cost per result 0.952 0.241
Total Cost $0.077 $0.017
Input Price $0.050 / 1M $0.195 / 1M
Output Price $0.400 / 1M $1.560 / 1M
Output Tokens 5,328 3,585
Reasoning Tokens 181,056 0
Response Time (avg) 43.52s 1.69s
Response Time (max) 204.02s 9.39s
Response Time (total) 565.82s 33.82s

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-5 Nano 6.5 7.9 58.3% 1 25.50s 1,221 21,184
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-5 Nano 5.4 6.6 33.3% 1 47.80s 604 30,144
Qwen3.5-27B 7.3 10.0 50.0% 0 1.98s 408 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 10.0 10.0 100.0% 0 65.96s 578 17,984
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-5 Nano 3.7 1.7 50.0% 2 21.42s 453 10,560
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-5 Nano 5.2 4.4 55.6% 2 204.02s 237 64,448
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-5 Nano 4.1 10.0 0.0% 0 17.51s 202 4,608
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-5 Nano 9.8 10.0 100.0% 0 15.64s 312 4,736
Qwen3.5-27B 6.3 10.0 50.0% 0 1.03s 69 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 5.3 7.2 44.4% 1 20.63s 929 14,272
Qwen3.5-27B 6.7 7.9 55.6% 1 1.38s 683 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 10.0 10.0 100.0% 0 33.30s 558 6,976
Qwen3.5-27B 10.0 10.0 100.0% 0 3.54s 303 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Nano 3.0 10.0 0.0% 0 20.13s 234 6,144
Qwen3.5-27B 3.0 10.0 0.0% 0 599ms 10 0

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