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Anthropic: Claude Opus 4.6 vs xAI: Grok 4.1 Fast

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Last updated at : 2026-02-27 15:16

Summary

Metric Anthropic: Claude Opus 4.6 medium Release: Unknown release date xAI: Grok 4.1 Fast none Release: Unknown release date
Rank #20 #38
Score 6.07 3.00
Consistency 8.80 8.69
Cost per result 10.992 0.176
Total Cost $0.880 $0.006
Tests Correct
Wrong Tests 6 11
Attempt pass rate 61.9% 28.6%
Flaky tests 2 2
Output Tokens 19,576 931
Reasoning Tokens 11,081 0

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Anthropic: Claude Opus 4.6 4.00 4.41 55.6% 2 897 1,000
xAI: Grok 4.1 Fast 1.33 10.00 0.0% 0 229 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Anthropic: Claude Opus 4.6 10.00 10.00 100.0% 0 668 763
xAI: Grok 4.1 Fast 10.00 10.00 100.0% 0 180 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Anthropic: Claude Opus 4.6 1.00 10.00 0.0% 0 16,328 7,928
xAI: Grok 4.1 Fast 4.00 7.21 55.6% 1 15 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Anthropic: Claude Opus 4.6 9.50 9.99 100.0% 0 266 468
xAI: Grok 4.1 Fast 1.00 10.00 0.0% 0 66 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Anthropic: Claude Opus 4.6 7.00 10.00 66.7% 0 556 593
xAI: Grok 4.1 Fast 1.00 9.48 0.0% 0 233 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Anthropic: Claude Opus 4.6 10.00 10.00 100.0% 0 861 329
xAI: Grok 4.1 Fast 1.00 1.62 33.3% 1 208 0

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