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Google: Gemini 3.1 Flash Lite vs xAI: Grok 4.20

Last updated at: 2026-05-08

Metric Gemini 3.1 Flash Lite Gemini 3.1 Flash Lite minimal Release: 2026-05-08 Grok 4.20 Grok 4.20 medium Release: 2026-03-31
Score 6.8 6.9
Rank #68 #66
Reliability 10.0 10.0
Consistency 8.7 8.3
Tests Correct
Attempt pass rate 59.7% 63.2%
Flaky tests 3 4
Total Runs 57 57
Cost per result 0.111 7.559
Total Cost $0.012 $0.756
Input Price $0.250 / 1M $1.250 / 1M
Output Price $1.500 / 1M $2.500 / 1M
Output Tokens 2,457 1,784
Reasoning Tokens 0 128,233
Response Time (avg) 1.41s 14.53s
Response Time (max) 4.49s 63.48s
Response Time (total) 26.72s 276.06s

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 8.3 10.0 75.0% 0 1.10s 639 0
Grok 4.20 8.2 7.9 83.3% 1 3.95s 287 8,312
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 10.0 10.0 100.0% 0 1.31s 636 0
Grok 4.20 4.3 1.1 66.7% 1 24.33s 250 12,804
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 3.0 10.0 0.0% 0 2.53s 357 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 10.0 10.0 100.0% 0 1.04s 279 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 2.9 7.2 11.1% 1 1.02s 15 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 4.0 10.0 0.0% 0 791ms 63 0
Grok 4.20 3.9 2.6 33.3% 1 24.48s 65 6,440
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 10.0 10.0 100.0% 0 932ms 72 0
Grok 4.20 7.3 6.0 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 6.0 4.6 66.7% 2 2.15s 153 0
Grok 4.20 7.7 10.0 66.7% 0 6.20s 149 7,913
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 10.0 10.0 100.0% 0 3.51s 234 0
Grok 4.20 3.0 10.0 0.0% 0 13.68s 197 6,620
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite 3.0 10.0 0.0% 0 724ms 9 0
Grok 4.20 3.0 10.0 0.0% 0 63.48s 9 16,442

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