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xAI: Grok 4.20 vs xAI: Grok 4.3

Last updated at: 2026-05-01

Metric Grok 4.20 Grok 4.20 medium Release: 2026-03-31 Grok 4.3 Grok 4.3 medium Release: 2026-05-01
Score 7.0 8.2
Rank #63 #20
Reliability N/A 10.0
Consistency 7.8 8.6
Tests Correct
Attempt pass rate 66.7% 81.5%
Flaky tests 5 3
Total Runs 54 54
Cost per result 8.252 3.974
Total Cost $0.743 $0.517
Input Price $2.000 / 1M $1.250 / 1M
Output Price $6.000 / 1M $2.500 / 1M
Output Tokens 1,744 1,223
Reasoning Tokens 109,882 187,047
Response Time (avg) 10.33s 48.63s
Response Time (max) 29.87s 216.69s
Response Time (total) 185.87s 875.27s

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Score vs Total Cost

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Score vs Response Time (avg)

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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
Grok 4.20 8.2 7.9 83.3% 1 3.36s 280 8,476
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
Grok 4.20 4.3 1.1 66.7% 1 24.33s 250 12,804
Grok 4.3 10.0 10.0 100.0% 0 45.72s 284 9,659
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Grok 4.20 10.0 10.0 100.0% 0 17.40s 232 9,556
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
Grok 4.20 10.0 10.0 100.0% 0 4.17s 180 5,333
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
Grok 4.20 5.3 10.0 33.3% 0 27.03s 375 49,339
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
Grok 4.20 5.8 2.8 66.7% 1 7.09s 47 4,252
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
Grok 4.20 7.3 6.0 83.3% 1 4.42s 40 5,474
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
Grok 4.20 6.4 7.7 55.6% 1 3.89s 143 8,028
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
Grok 4.20 3.0 10.0 0.0% 0 13.68s 197 6,620
Grok 4.3 10.0 10.0 100.0% 0 17.66s 168 4,615

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