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Google: Gemini 3.5 Flash vs Grok 4.1 Fast

Last updated at: 2026-05-19

Metric Gemini 3.5 Flash Gemini 3.5 Flash low Release: 2026-05-19 Grok 4.1 Fast Grok 4.1 Fast none Release: 2025-11-19
Score 9.6 4.4
Rank #2 #146
Reliability 10.0 10.0
Consistency 10.0 8.8
Tests Correct
Attempt pass rate 94.7% 22.8%
Flaky tests 0 3
Total Runs 57 57
Cost per result 1.359 0.273
Total Cost $0.245 $0.009
Input Price $1.500 / 1M $0.000 / 1M
Output Price $9.000 / 1M $0.000 / 1M
Output Tokens 2,003 1,733
Reasoning Tokens 20,245 0
Response Time (avg) 2.84s 1.67s
Response Time (max) 6.44s 5.51s
Response Time (total) 54.00s 20.08s

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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 3.5 Flash 10.0 10.0 100.0% 0 2.52s 209 2,536
Grok 4.1 Fast 3.2 10.0 0.0% 0 1.07s 235 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 5.49s 428 3,146
Grok 4.1 Fast 5.3 3.4 33.3% 1 1.79s 567 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 6.44s 351 3,050
Grok 4.1 Fast 3.0 10.0 0.0% 0 3.33s 105 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 1.81s 279 1,164
Grok 4.1 Fast 10.0 10.0 100.0% 0 943ms 180 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 7.7 10.0 66.7% 0 3.39s 12 4,538
Grok 4.1 Fast 5.9 7.2 55.6% 1 1.06s 15 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 2.27s 119 916
Grok 4.1 Fast 4.4 9.9 0.0% 0 1.08s 112 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 9.9 10.0 100.0% 0 1.86s 71 1,652
Grok 4.1 Fast 3.0 10.0 0.0% 0 923ms 56 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 2.35s 288 2,150
Grok 4.1 Fast 3.0 10.0 0.0% 0 1.28s 243 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 3.27s 234 403
Grok 4.1 Fast 2.8 1.6 33.3% 1 5.51s 208 0
Trivia Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 1.88s 12 690
Grok 4.1 Fast 3.0 10.0 0.0% 0 731ms 12 0

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