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Qwen: Qwen3.5-Flash vs xAI: Grok 4.1 Fast

Last updated at: 2026-04-14

Metric Qwen3.5-Flash Qwen3.5-Flash none Release: 2026-02-24 Grok 4.1 Fast Grok 4.1 Fast medium Release: 2025-11-19
Score 6.2 6.7
Rank #56 #49
Consistency 9.6 7.2
Tests Correct
Attempt pass rate 46.3% 64.8%
Flaky tests 1 6
Total Runs 54 54
Cost per result 0.070 0.613
Total Cost $0.006 $0.056
Input Price $0.065 / 1M $0.200 / 1M
Output Price $0.260 / 1M $0.500 / 1M
Output Tokens 4,266 2,010
Reasoning Tokens 0 91,298
Response Time (avg) 3.25s 23.88s
Response Time (max) 13.73s 121.79s
Response Time (total) 58.44s 262.66s

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Score vs Total Cost

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Score vs Response Time (avg)

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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 3.5 8.3 8.3% 1 1.32s 690 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-Flash 10.0 10.0 100.0% 0 1.29s 489 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-Flash 3.0 10.0 0.0% 0 6.22s 1,794 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-Flash 10.0 10.0 100.0% 0 1.57s 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-Flash 7.7 10.0 66.7% 0 905ms 15 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-Flash 10.0 10.0 100.0% 0 803ms 100 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-Flash 6.3 10.0 50.0% 0 8.81s 63 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-Flash 3.3 10.0 0.0% 0 5.90s 608 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-Flash 10.0 10.0 100.0% 0 3.67s 264 0
Grok 4.1 Fast 2.8 1.6 33.3% 1 27.71s 260 11,485

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