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Qwen: Qwen3.5-Flash vs Qwen: Qwen3.5 Plus 2026-04-20

Last updated at: 2026-05-29

Metric Qwen3.5-Flash Qwen3.5-Flash medium Release: 2026-02-24 Qwen3.5 Plus 2026-04-20 Qwen3.5 Plus 2026-04-20 medium Release: 2026-04-20
Score 7.6 7.7
Rank #51 #40
Reliability 10.0 10.0
Consistency 8.0 8.7
Tests Correct
Attempt pass rate 75.0% 71.7%
Flaky tests 5 3
Total Runs 60 60
Cost per result 0.821 2.789
Total Cost $0.099 $0.363
Input Price $0.065 / 1M $0.300 / 1M
Output Price $0.260 / 1M $1.800 / 1M
Output Tokens 2,074 2,259
Reasoning Tokens 272,063 150,249
Response Time (avg) 63.04s 43.65s
Response Time (max) 234.29s 189.38s
Response Time (total) 1197.71s 872.90s

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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
Qwen3.5-Flash 10.0 10.0 100.0% 0 59.11s 383 32,992
Qwen3.5 Plus 2026-04-20 10.0 10.0 100.0% 0 10.84s 215 7,748
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5-Flash 4.1 5.8 33.3% 1 54.23s 288 67,546
Qwen3.5 Plus 2026-04-20 6.6 6.0 66.7% 1 137.55s 287 42,318
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5-Flash 10.0 10.0 100.0% 0 17.78s 483 8,270
Qwen3.5 Plus 2026-04-20 10.0 10.0 100.0% 0 92.41s 483 17,490
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5-Flash 7.3 5.9 83.3% 1 56.99s 235 16,237
Qwen3.5 Plus 2026-04-20 10.0 10.0 100.0% 0 38.32s 270 14,668
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5-Flash 5.3 7.2 44.4% 1 146.50s 58 43,615
Qwen3.5 Plus 2026-04-20 2.9 7.2 11.1% 1 53.10s 63 28,414
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5-Flash 6.1 3.1 66.7% 1 40.05s 99 38,486
Qwen3.5 Plus 2026-04-20 4.9 9.6 0.0% 0 25.30s 125 4,792
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5-Flash 10.0 10.0 100.0% 0 63.49s 98 14,139
Qwen3.5 Plus 2026-04-20 10.0 10.0 100.0% 0 20.25s 103 7,689
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5-Flash 8.2 7.2 88.9% 1 27.61s 89 12,457
Qwen3.5 Plus 2026-04-20 8.2 7.2 88.9% 1 17.67s 338 9,800
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5-Flash 10.0 10.0 100.0% 0 10.33s 309 1,284
Qwen3.5 Plus 2026-04-20 10.0 10.0 100.0% 0 14.72s 348 2,164
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5-Flash 3.0 10.0 0.0% 0 48.98s 32 37,037
Qwen3.5 Plus 2026-04-20 3.0 10.0 0.0% 0 92.57s 27 15,166

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