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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 medium Release: 2026-02-24 Grok 4.20 Beta Grok 4.20 Beta medium Release: 2026-03-12
Rank #26 #24
Avg Score 6.9 7.0
Consistency 7.5 9.0
Cost per result 0.720 5.989
Total Cost $0.072 $0.599
Tests Correct
Attempt pass rate 81.3% 70.8%
Flaky tests 5 2
Total Runs 48 48
Output Tokens 1,807 1,481
Reasoning Tokens 169,952 86,628
Response Time (avg) 70.81s 8.89s
Response Time (max) 234.29s 24.21s
Response Time (total) 1132.90s 142.18s

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Score vs Total Cost

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Avg 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 10.0 10.0 100.0% 0 71.35s 363 23,645
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 10.0 100.0% 0 17.78s 483 8,270
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 5.5 5.9 83.3% 1 56.99s 235 16,237
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 4.0 7.2 44.4% 1 146.50s 58 43,615
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 5.0 3.1 66.7% 1 40.05s 99 38,486
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 10.0 10.0 100.0% 0 63.49s 98 14,139
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 4.0 4.4 77.8% 2 56.74s 162 24,276
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 10.33s 309 1,284
Grok 4.20 Beta 10.0 10.0 0.0% 0 12.39s 183 5,384

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