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Anthropic: Claude Sonnet 4.6 vs xAI: Grok 4.20 Beta

Last updated at: 2026-03-12

Metric Anthropic: Claude Sonnet 4.6 Claude Sonnet 4.6 none Release: 2026-02-17 xAI: Grok 4.20 Beta Grok 4.20 Beta medium Release: 2026-03-12
Rank #27 #24
Avg Score 6.8 7.0
Consistency 9.6 9.0
Cost per result 2.504 5.989
Total Cost $0.251 $0.599
Tests Correct
Attempt pass rate 66.7% 70.8%
Flaky tests 1 2
Total Runs 48 48
Output Tokens 6,895 1,481
Reasoning Tokens 0 86,628
Response Time (avg) 5.57s 8.89s
Response Time (max) 23.84s 24.21s
Response Time (total) 50.12s 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
Claude Sonnet 4.6 4.0 10.0 33.3% 0 4.83s 1,199 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
Claude Sonnet 4.6 9.0 10.0 100.0% 0 23.84s 3,766 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
Claude Sonnet 4.6 9.9 10.0 100.0% 0 3.43s 252 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
Claude Sonnet 4.6 7.0 10.0 66.7% 0 3.54s 413 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
Claude Sonnet 4.6 5.0 3.1 66.7% 1 2.56s 192 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
Claude Sonnet 4.6 5.5 10.0 50.0% 0 1.96s 90 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
Claude Sonnet 4.6 7.0 10.0 66.7% 0 2.92s 536 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
Claude Sonnet 4.6 10.0 10.0 100.0% 0 4.11s 447 0
Grok 4.20 Beta 10.0 10.0 0.0% 0 12.39s 183 5,384

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