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Qwen: Qwen3.5 Plus 2026-04-20 vs xAI: Grok 4.1 Fast

Last updated at: 2026-04-27

Metric Qwen3.5 Plus 2026-04-20 Qwen3.5 Plus 2026-04-20 none Release: 2026-04-20 Grok 4.1 Fast Grok 4.1 Fast medium Release: 2025-11-19
Score 5.8 6.7
Rank #88 #69
Reliability 9.8 N/A
Consistency 8.3 7.2
Tests Correct
Attempt pass rate 42.6% 64.8%
Flaky tests 4 6
Total Runs 54 54
Cost per result 0.397 0.613
Total Cost $0.024 $0.056
Input Price $0.400 / 1M $0.200 / 1M
Output Price $2.400 / 1M $0.500 / 1M
Output Tokens 4,645 2,010
Reasoning Tokens 0 91,298
Response Time (avg) 3.18s 23.88s
Response Time (max) 13.32s 121.79s
Response Time (total) 57.24s 262.66s

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
Qwen3.5 Plus 2026-04-20 4.8 10.0 25.0% 0 1.88s 557 0
Grok 4.1 Fast 8.7 7.9 91.7% 1 3.81s 108 4,741
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5 Plus 2026-04-20 5.3 3.4 33.3% 1 3.20s 450 0
Grok 4.1 Fast 2.3 1.1 33.3% 1 23.58s 821 6,703
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5 Plus 2026-04-20 2.8 1.6 33.3% 1 13.32s 2,275 0
Grok 4.1 Fast 10.0 10.0 100.0% 0 37.64s 261 12,272
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5 Plus 2026-04-20 10.0 10.0 100.0% 0 2.82s 243 0
Grok 4.1 Fast 10.0 10.0 100.0% 0 6.63s 180 5,409
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5 Plus 2026-04-20 5.3 10.0 33.3% 0 4.43s 18 0
Grok 4.1 Fast 5.8 4.4 66.7% 2 121.79s 11 37,657
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5 Plus 2026-04-20 4.8 10.0 0.0% 0 1.41s 119 0
Grok 4.1 Fast 4.2 9.9 0.0% 0 16.25s 127 3,456
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5 Plus 2026-04-20 6.2 5.8 66.7% 1 1.17s 68 0
Grok 4.1 Fast 6.6 10.0 50.0% 0 5.30s 55 3,489
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5 Plus 2026-04-20 4.8 7.9 22.2% 1 2.03s 618 0
Grok 4.1 Fast 5.3 7.2 44.4% 1 8.08s 187 6,086
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5 Plus 2026-04-20 10.0 10.0 100.0% 0 4.42s 297 0
Grok 4.1 Fast 2.8 1.6 33.3% 1 27.71s 260 11,485

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