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Google: Gemini 2.5 Flash vs xAI: Grok 4.3

Last updated at: 2026-05-01

Metric Gemini 2.5 Flash Gemini 2.5 Flash medium Release: 2025-06-17 Grok 4.3 Grok 4.3 medium Release: 2026-05-01
Score 8.2 8.2
Rank #21 #20
Reliability N/A 10.0
Consistency 9.5 8.6
Tests Correct
Attempt pass rate 75.9% 81.5%
Flaky tests 1 3
Total Runs 54 54
Cost per result 2.454 3.974
Total Cost $0.319 $0.517
Input Price $0.300 / 1M $1.250 / 1M
Output Price $2.500 / 1M $2.500 / 1M
Output Tokens 1,898 1,223
Reasoning Tokens 122,273 187,047
Response Time (avg) 12.12s 48.63s
Response Time (max) 95.48s 216.69s
Response Time (total) 218.12s 875.27s

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Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 2.5 Flash 8.4 10.0 75.0% 0 6.30s 255 10,233
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
Gemini 2.5 Flash 10.0 10.0 100.0% 0 16.23s 522 10,350
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
Gemini 2.5 Flash 10.0 10.0 100.0% 0 28.44s 303 11,922
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
Gemini 2.5 Flash 10.0 10.0 100.0% 0 4.06s 279 2,325
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
Gemini 2.5 Flash 5.9 7.2 55.6% 1 37.34s 18 80,702
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
Gemini 2.5 Flash 4.8 10.0 0.0% 0 4.86s 92 1,899
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
Gemini 2.5 Flash 9.8 10.0 100.0% 0 2.62s 69 1,203
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
Gemini 2.5 Flash 7.7 10.0 66.7% 0 3.94s 126 2,499
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
Gemini 2.5 Flash 10.0 10.0 100.0% 0 6.20s 234 1,140
Grok 4.3 10.0 10.0 100.0% 0 17.66s 168 4,615

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