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OpenAI: GPT-5.4 Nano vs xAI: Grok 4.1 Fast

Last updated at: 2026-03-17

Metric GPT-5.4 Nano GPT-5.4 Nano none Release: 2026-03-17 Grok 4.1 Fast Grok 4.1 Fast medium Release: 2025-11-19
Rank #73 #36
Score 4.3 6.9
Consistency 7.3 7.5
Cost per result 0.404 0.568
Total Cost $0.009 $0.052
Tests Correct
Attempt pass rate 29.4% 66.7%
Flaky tests 6 5
Total Runs 51 51
Output Tokens 2,185 1,189
Reasoning Tokens 0 84,595
Response Time (avg) 1.39s 23.91s
Response Time (max) 3.84s 121.79s
Response Time (total) 23.70s 239.09s

Top Models by Score

Score vs Total Cost

Response Time (avg)

Score vs Response Time (avg)

Total Output Tokens

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
GPT-5.4 Nano 3.5 8.0 16.7% 1 1.18s 800 0
Grok 4.1 Fast 8.7 7.9 91.7% 1 3.81s 108 4,741
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 3.0 10.0 0.0% 0 3.84s 280 0
Grok 4.1 Fast 10.0 10.0 100.0% 0 37.64s 261 12,272
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 6.5 10.0 50.0% 0 1.11s 219 0
Grok 4.1 Fast 10.0 10.0 100.0% 0 6.63s 180 5,409
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 2.9 4.4 22.2% 2 926ms 52 0
Grok 4.1 Fast 5.8 4.4 66.7% 2 121.79s 11 37,657
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 3.8 2.5 33.3% 1 1.31s 180 0
Grok 4.1 Fast 4.2 9.9 0.0% 0 16.25s 127 3,456
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 5.0 6.8 33.3% 1 787ms 84 0
Grok 4.1 Fast 6.6 10.0 50.0% 0 5.30s 55 3,489
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 3.7 7.3 22.2% 1 1.29s 348 0
Grok 4.1 Fast 5.3 7.2 44.4% 1 8.08s 187 6,086
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 Nano 10.0 10.0 100.0% 0 3.40s 222 0
Grok 4.1 Fast 2.8 1.6 33.3% 1 27.71s 260 11,485

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