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OpenAI: GPT-5 Mini vs xAI: Grok 4.20 Beta

Last updated at: 2026-03-12

Metric GPT-5 Mini GPT-5 Mini medium Release: 2025-08-07 Grok 4.20 Beta Grok 4.20 Beta none Release: 2026-03-12
Rank #34 #52
Avg Score 6.0 4.4
Consistency 8.9 9.1
Cost per result 1.457 2.214
Total Cost $0.117 $0.089
Tests Correct
Attempt pass rate 58.3% 33.3%
Flaky tests 2 2
Total Runs 48 48
Output Tokens 5,826 1,511
Reasoning Tokens 48,768 0
Response Time (avg) 25.14s 1.22s
Response Time (max) 88.15s 6.48s
Response Time (total) 402.29s 19.53s

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Avg 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 Mini 7.0 9.6 66.7% 0 16.45s 1,645 5,824
Grok 4.20 Beta 3.3 7.9 22.2% 1 562ms 245 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Mini 10.0 10.0 100.0% 0 88.15s 754 11,520
Grok 4.20 Beta 10.0 10.0 0.0% 0 6.48s 282 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Mini 9.9 10.0 100.0% 0 12.58s 453 3,200
Grok 4.20 Beta 9.9 10.0 100.0% 0 601ms 197 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Mini 10.0 7.2 22.2% 1 44.63s 293 14,016
Grok 4.20 Beta 10.0 10.0 0.0% 0 611ms 160 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Mini 4.0 10.0 0.0% 0 13.50s 349 1,856
Grok 4.20 Beta 5.0 10.0 0.0% 0 541ms 87 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Mini 7.5 6.6 83.3% 1 15.66s 318 4,992
Grok 4.20 Beta 4.5 10.0 0.0% 0 687ms 60 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Mini 4.3 9.8 33.3% 0 14.09s 1,527 5,760
Grok 4.20 Beta 4.0 7.2 55.6% 1 541ms 291 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
GPT-5 Mini 10.0 10.0 100.0% 0 18.64s 487 1,600
Grok 4.20 Beta 10.0 10.0 100.0% 0 4.79s 189 0

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