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OpenAI: GPT-5 Nano vs xAI: Grok 4.1 Fast

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

Summary

Metric OpenAI: GPT-5 Nano medium Release: Unknown release date xAI: Grok 4.1 Fast medium Release: Unknown release date
Rank #23 #16
Score 5.86 6.29
Consistency 6.60 8.20
Cost per result 0.519 0.532
Total Cost $0.037 $0.043
Tests Correct
Wrong Tests 7 6
Attempt pass rate 69.1% 66.7%
Flaky tests 6 3
Output Tokens 3,700 793
Reasoning Tokens 85,184 74,056

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
OpenAI: GPT-5 Nano 7.00 9.99 66.7% 0 1,107 19,968
xAI: Grok 4.1 Fast 10.00 10.00 100.0% 0 102 4,021
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
OpenAI: GPT-5 Nano 5.50 5.81 83.3% 1 426 8,576
xAI: Grok 4.1 Fast 10.00 10.00 100.0% 0 180 5,472
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
OpenAI: GPT-5 Nano 4.00 4.41 55.6% 2 195 33,600
xAI: Grok 4.1 Fast 4.00 7.21 55.6% 1 12 40,547
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
OpenAI: GPT-5 Nano 7.00 6.41 83.3% 1 360 4,032
xAI: Grok 4.1 Fast 5.50 10.00 50.0% 0 48 3,151
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
OpenAI: GPT-5 Nano 4.67 4.90 55.6% 2 1,054 12,032
xAI: Grok 4.1 Fast 4.67 7.20 44.4% 1 191 9,380
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
OpenAI: GPT-5 Nano 10.00 10.00 100.0% 0 558 6,976
xAI: Grok 4.1 Fast 1.00 1.62 33.3% 1 260 11,485

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