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Qwen: Qwen3.5 Plus 2026-02-15 vs xAI: Grok 4.20 Beta

Last updated at: 2026-03-12

Metric Qwen3.5 Plus 2026-02-15 Qwen3.5 Plus 2026-02-15 none Release: 2026-02-15 Grok 4.20 Beta Grok 4.20 Beta medium Release: 2026-03-12
Rank #31 #24
Avg Score 6.2 7.0
Consistency 9.6 9.0
Cost per result 0.172 5.989
Total Cost $0.016 $0.599
Tests Correct
Attempt pass rate 58.3% 70.8%
Flaky tests 1 2
Total Runs 48 48
Output Tokens 2,015 1,481
Reasoning Tokens 0 86,628
Response Time (avg) 2.65s 8.89s
Response Time (max) 6.65s 24.21s
Response Time (total) 26.52s 142.18s

Top Models by Score

Score vs Total Cost

Response Time (avg)

Avg Score vs Response Time (avg)

Total Output Tokens

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 Plus 2026-02-15 4.0 10.0 33.3% 0 2.74s 514 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 Plus 2026-02-15 10.0 10.0 0.0% 0 6.65s 314 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 Plus 2026-02-15 9.9 10.0 100.0% 0 1.89s 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 Plus 2026-02-15 4.0 10.0 33.3% 0 1.17s 17 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 Plus 2026-02-15 4.0 3.0 33.3% 1 2.26s 117 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 Plus 2026-02-15 10.0 10.0 100.0% 0 1.67s 72 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 Plus 2026-02-15 7.0 10.0 66.7% 0 2.82s 516 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 Plus 2026-02-15 10.0 10.0 100.0% 0 3.33s 222 0
Grok 4.20 Beta 10.0 10.0 0.0% 0 12.39s 183 5,384

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