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Qwen: Qwen3.5-Flash vs xAI: Grok 4.20 Beta

Last updated at: 2026-03-12

Metric Qwen3.5-Flash Qwen3.5-Flash none Release: 2026-02-24 Grok 4.20 Beta Grok 4.20 Beta medium Release: 2026-03-12
Rank #41 #24
Avg Score 5.2 7.0
Consistency 9.6 9.0
Cost per result 0.077 5.989
Total Cost $0.006 $0.599
Tests Correct
Attempt pass rate 45.8% 70.8%
Flaky tests 1 2
Total Runs 48 48
Output Tokens 3,774 1,481
Reasoning Tokens 0 86,628
Response Time (avg) 3.54s 8.89s
Response Time (max) 13.73s 24.21s
Response Time (total) 56.70s 142.18s

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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-Flash 2.3 7.8 11.1% 1 1.62s 687 0
Grok 4.20 Beta 7.0 7.2 88.9% 1 3.19s 262 6,289
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5-Flash 10.0 10.0 0.0% 0 6.22s 1,794 0
Grok 4.20 Beta 10.0 10.0 100.0% 0 20.93s 227 12,212
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5-Flash 9.9 10.0 100.0% 0 1.57s 243 0
Grok 4.20 Beta 9.9 10.0 100.0% 0 4.01s 180 5,281
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5-Flash 7.0 10.0 66.7% 0 905ms 15 0
Grok 4.20 Beta 4.0 10.0 33.3% 0 21.33s 251 40,255
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 4.20 Beta 10.0 10.0 100.0% 0 5.78s 72 3,440
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5-Flash 5.0 10.0 50.0% 0 8.81s 63 0
Grok 4.20 Beta 9.0 10.0 50.0% 0 4.97s 57 7,107
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Qwen3.5-Flash 1.3 10.0 0.0% 0 5.90s 608 0
Grok 4.20 Beta 7.0 7.2 88.9% 1 3.85s 249 6,660
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 4.20 Beta 10.0 10.0 0.0% 0 12.39s 183 5,384

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