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Qwen: Qwen3.5-27B vs Qwen: Qwen3.5 Plus 2026-04-20

Last updated at: 2026-04-27

Metric Qwen3.5-27B Qwen3.5-27B none Release: 2026-02-24 Qwen3.5 Plus 2026-04-20 Qwen3.5 Plus 2026-04-20 none Release: 2026-04-20
Score 5.9 5.8
Rank #85 #88
Reliability N/A 9.8
Consistency 9.2 8.3
Tests Correct
Attempt pass rate 38.9% 42.6%
Flaky tests 2 4
Total Runs 54 54
Cost per result 0.265 0.397
Total Cost $0.016 $0.024
Input Price $0.195 / 1M $0.400 / 1M
Output Price $1.560 / 1M $2.400 / 1M
Output Tokens 3,545 4,645
Reasoning Tokens 0 0
Response Time (avg) 1.74s 3.18s
Response Time (max) 9.39s 13.32s
Response Time (total) 31.32s 57.24s

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Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5-27B 4.8 10.0 25.0% 0 788ms 267 0
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
Qwen3.5-27B 10.0 10.0 100.0% 0 2.51s 381 0
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
Qwen3.5-27B 2.8 1.6 33.3% 1 9.39s 1,461 0
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
Qwen3.5-27B 10.0 10.0 100.0% 0 1.43s 243 0
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
Qwen3.5-27B 3.0 10.0 0.0% 0 540ms 15 0
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
Qwen3.5-27B 5.0 10.0 0.0% 0 2.51s 126 0
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
Qwen3.5-27B 4.8 10.0 0.0% 0 815ms 69 0
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
Qwen3.5-27B 6.7 7.9 55.6% 1 1.37s 680 0
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
Qwen3.5-27B 10.0 10.0 100.0% 0 3.54s 303 0
Qwen3.5 Plus 2026-04-20 10.0 10.0 100.0% 0 4.42s 297 0

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