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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 none Release: 2025-11-19
Rank #73 #71
Score 4.3 4.4
Consistency 7.3 9.0
Cost per result 0.404 0.251
Total Cost $0.009 $0.008
Tests Correct
Attempt pass rate 29.4% 23.5%
Flaky tests 6 2
Total Runs 51 51
Output Tokens 2,185 1,154
Reasoning Tokens 0 0
Response Time (avg) 1.39s 1.76s
Response Time (max) 3.84s 5.51s
Response Time (total) 23.70s 17.56s

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Score vs Total Cost

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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 3.2 10.0 0.0% 0 1.07s 235 0
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 3.0 10.0 0.0% 0 3.33s 105 0
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 943ms 180 0
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 5.9 7.2 55.6% 1 1.06s 15 0
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 4.4 9.9 0.0% 0 1.08s 112 0
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 3.0 10.0 0.0% 0 923ms 56 0
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 3.2 10.0 0.0% 0 1.28s 243 0
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 5.51s 208 0

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