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Google: Gemini 3.5 Flash vs xAI: Grok 4.5

Gemini 3.5 Flash (high) leads on average score with 9.5 vs 8.9. Grok 4.5 (high) has the lower benchmark cost at $1.707 vs $1.976. Gemini 3.5 Flash (high) is faster at 15.07s vs 76.50s, with pass rates of 93.9% vs 83.3%.

Recommended modelGemini 3.5 Flash (high)It has the best score here (9.5), while responding about 5.1x faster than Grok 4.5 (high).

Last updated at: 2026-07-17

Metric Gemini 3.5 Flash Gemini 3.5 Flash high Release: 2026-05-19 Grok 4.5 Grok 4.5 high Release: 2026-07-08
Score 9.5 8.9
Rank #2 #12
Reliability 10.0 10.0
Consistency 9.3 9.2
Tests Correct
Attempt pass rate 93.9% 83.3%
Flaky tests 2 2
Total Runs 66 66
Cost per result 9.879 10.041
Total Cost $1.976 $1.707
Input Price $1.500 / 1M $2.000 / 1M
Output Price $9.000 / 1M $6.000 / 1M
Total Input Tokens 107,137 151,562
Output Tokens 8,777 5,655
Reasoning Tokens 192,900 247,540
Response Time (avg) 15.07s 76.50s
Response Time (max) 145.92s 676.83s
Response Time (total) 331.48s 1683.07s

Hamster playing table tennis

Prompt: Create a detailed SVG illustration of a hamster playing table tennis.

#2 Gemini 3.5 Flash

high
Cost
$0.208
Time
118.2s
Tokens
23,158 tok

#12 xAI: Grok 4.5

high
Cost
$0.015
Time
29.7s
Tokens
2,737 tok

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

Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Input Tokens Output Tokens Reasoning Tokens
Gemini 3.5 Flash 10.0 10.0 100.0% 0 22.96s 8,118 456 47,129
Grok 4.5 10.0 10.0 100.0% 0 155.16s 9,579 357 100,752

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