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Anthropic: Claude Opus 4.8 vs Qwen: Qwen3.5 Plus 2026-04-20

Last updated at: 2026-06-03

Metric Claude Opus 4.8 Claude Opus 4.8 none Release: 2026-05-28 Qwen3.5 Plus 2026-04-20 Qwen3.5 Plus 2026-04-20 medium Release: 2026-04-20
Score 7.3 7.5
Rank #62 #48
Reliability 10.0 10.0
Consistency 9.2 8.9
Tests Correct
Attempt pass rate 65.0% 65.0%
Flaky tests 2 2
Total Runs 60 60
Cost per result 4.324 3.022
Total Cost $0.519 $0.287
Input Price $5.000 / 1M $0.300 / 1M
Output Price $25.000 / 1M $1.800 / 1M
Total Input Tokens 63,282 39,262
Output Tokens 8,098 2,259
Reasoning Tokens 0 150,249
Response Time (avg) 3.51s 43.65s
Response Time (max) 17.73s 189.38s
Response Time (total) 70.19s 872.90s

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) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 6.5 10.0 50.0% 0 3.40s 834 1,472 0
Qwen3.5 Plus 2026-04-20 10.0 10.0 100.0% 0 10.84s 672 215 7,748
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 6.8 10.0 50.0% 0 3.59s 6,768 1,323 0
Qwen3.5 Plus 2026-04-20 4.3 8.1 0.0% 0 137.55s 4,795 287 42,318
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 9.5 10.0 100.0% 0 17.73s 29,658 3,259 0
Qwen3.5 Plus 2026-04-20 10.0 10.0 100.0% 0 92.41s 14,934 483 17,490
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 7.3 5.8 83.3% 1 1.77s 10,503 308 0
Qwen3.5 Plus 2026-04-20 10.0 10.0 100.0% 0 38.32s 7,782 270 14,668
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 5.3 7.2 44.4% 1 1.66s 975 61 0
Qwen3.5 Plus 2026-04-20 2.9 7.2 11.1% 1 53.10s 771 63 28,414
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 10.0 10.0 100.0% 0 3.48s 708 230 0
Qwen3.5 Plus 2026-04-20 4.9 9.6 0.0% 0 25.30s 516 125 4,792
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 9.9 10.0 100.0% 0 1.37s 909 95 0
Qwen3.5 Plus 2026-04-20 10.0 10.0 100.0% 0 20.25s 699 103 7,689
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 7.7 10.0 66.7% 0 2.74s 894 783 0
Qwen3.5 Plus 2026-04-20 8.2 7.2 88.9% 1 17.67s 696 338 9,800
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 10.0 10.0 100.0% 0 5.35s 11,775 355 0
Qwen3.5 Plus 2026-04-20 10.0 10.0 100.0% 0 14.72s 8,193 348 2,164
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Claude Opus 4.8 3.0 10.0 0.0% 0 3.41s 258 212 0
Qwen3.5 Plus 2026-04-20 3.0 10.0 0.0% 0 92.57s 204 27 15,166

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