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Google: Gemini 3.1 Flash Lite Preview vs xAI: Grok 4.20

Last updated at: 2026-04-02

Metric Gemini 3.1 Flash Lite Preview Gemini 3.1 Flash Lite Preview none Release: 2026-03-03 Grok 4.20 Grok 4.20 medium Release: 2026-03-31
Score 7.8 7.1
Rank #28 #40
Consistency 9.6 8.2
Tests Correct
Attempt pass rate 68.6% 66.7%
Flaky tests 1 4
Total Runs 51 51
Cost per result 0.131 7.358
Total Cost $0.015 $0.663
Input Price $0.250 / 1M $2.000 / 1M
Output Price $1.500 / 1M $6.000 / 1M
Output Tokens 4,721 1,494
Reasoning Tokens 0 97,078
Response Time (avg) 1.29s 9.50s
Response Time (max) 3.39s 29.87s
Response Time (total) 21.95s 161.54s

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
Gemini 3.1 Flash Lite Preview 7.5 8.4 66.7% 1 1.04s 1,092 0
Grok 4.20 8.2 7.9 83.3% 1 3.36s 280 8,476
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite Preview 3.0 10.0 0.0% 0 3.20s 339 0
Grok 4.20 10.0 10.0 100.0% 0 17.40s 232 9,556
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite Preview 10.0 10.0 100.0% 0 1.22s 399 0
Grok 4.20 10.0 10.0 100.0% 0 4.17s 180 5,333
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite Preview 5.3 10.0 33.3% 0 942ms 568 0
Grok 4.20 5.3 10.0 33.3% 0 27.03s 375 49,339
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite Preview 4.0 10.0 0.0% 0 741ms 69 0
Grok 4.20 5.8 2.8 66.7% 1 7.09s 47 4,252
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite Preview 10.0 10.0 100.0% 0 1.13s 574 0
Grok 4.20 7.3 5.9 83.3% 1 4.42s 40 5,474
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite Preview 10.0 10.0 100.0% 0 972ms 898 0
Grok 4.20 6.4 7.7 55.6% 1 3.89s 143 8,028
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite Preview 10.0 10.0 100.0% 0 3.39s 782 0
Grok 4.20 3.0 10.0 0.0% 0 13.68s 197 6,620

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