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OpenAI: GPT-5.4 vs xAI: Grok 4.20

Last updated at: 2026-04-02

Metric GPT-5.4 GPT-5.4 none Release: 2026-03-05 Grok 4.20 Grok 4.20 none Release: 2026-03-31
Score 5.6 5.4
Rank #64 #69
Consistency 9.0 9.5
Tests Correct
Attempt pass rate 39.2% 31.4%
Flaky tests 2 1
Total Runs 51 51
Cost per result 1.573 1.809
Total Cost $0.095 $0.091
Input Price $2.500 / 1M $2.000 / 1M
Output Price $15.000 / 1M $6.000 / 1M
Output Tokens 1,837 1,655
Reasoning Tokens 0 0
Response Time (avg) 1.43s 1.11s
Response Time (max) 2.89s 6.04s
Response Time (total) 24.27s 18.80s

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 3.2 8.0 8.3% 1 1.21s 406 0
Grok 4.20 4.8 10.0 25.0% 0 501ms 267 0
Combined 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 2.89s 291 0
Grok 4.20 3.0 10.0 0.0% 0 6.04s 282 0
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 1.04s 222 0
Grok 4.20 10.0 10.0 100.0% 0 522ms 207 0
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 1.07s 50 0
Grok 4.20 3.0 10.0 0.0% 0 687ms 325 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 4.4 9.9 0.0% 0 1.78s 184 0
Grok 4.20 4.8 10.0 0.0% 0 659ms 83 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 6.5 10.0 50.0% 0 1.07s 81 0
Grok 4.20 4.8 10.0 0.0% 0 455ms 60 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5.4 5.6 9.8 33.3% 0 1.52s 357 0
Grok 4.20 5.3 7.4 44.4% 1 487ms 242 0
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 2.75s 246 0
Grok 4.20 10.0 10.0 100.0% 0 4.63s 189 0

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