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OpenAI: GPT-5.4 vs xAI: Grok 4.3

Last updated at: 2026-05-22

Metric GPT-5.4 GPT-5.4 medium Release: 2026-03-05 Grok 4.3 Grok 4.3 medium Release: 2026-05-01
Score 7.9 7.8
Rank #27 #31
Reliability 10.0 10.0
Consistency 8.5 8.4
Tests Correct
Attempt pass rate 75.0% 75.0%
Flaky tests 4 4
Total Runs 60 60
Cost per result 8.767 4.562
Total Cost $1.140 $0.593
Input Price $2.500 / 1M $1.250 / 1M
Output Price $15.000 / 1M $2.500 / 1M
Output Tokens 2,222 1,485
Reasoning Tokens 68,503 214,928
Response Time (avg) 22.31s 49.23s
Response Time (max) 100.41s 216.69s
Response Time (total) 446.15s 984.54s

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 8.3 10.0 75.0% 0 4.11s 240 1,511
Grok 4.3 10.0 10.0 100.0% 0 8.83s 88 8,207
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 8.2 6.7 83.3% 1 54.98s 412 19,995
Grok 4.3 7.4 6.5 66.7% 1 55.26s 532 24,554
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 10.0 10.0 100.0% 0 20.57s 301 3,543
Grok 4.3 10.0 10.0 100.0% 0 63.99s 234 15,301
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 10.0 10.0 100.0% 0 5.32s 234 804
Grok 4.3 10.0 10.0 100.0% 0 18.97s 180 9,546
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 5.3 7.2 44.4% 1 74.27s 61 34,748
Grok 4.3 5.3 7.2 44.4% 1 181.74s 14 111,300
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 4.7 3.1 33.3% 1 4.92s 145 321
Grok 4.3 5.4 2.5 66.7% 1 24.70s 70 5,020
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 10.0 10.0 100.0% 0 3.11s 93 897
Grok 4.3 9.8 10.0 100.0% 0 18.58s 57 8,713
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 8.2 7.2 88.9% 1 9.13s 442 3,832
Grok 4.3 5.9 7.2 55.6% 1 22.53s 128 14,686
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 10.0 10.0 100.0% 0 13.28s 264 1,031
Grok 4.3 10.0 10.0 100.0% 0 17.66s 168 4,615
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 3.0 10.0 0.0% 0 13.95s 30 1,821
Grok 4.3 3.0 10.0 0.0% 0 44.47s 14 12,986

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