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Google: Gemini 3.6 Flash vs OpenAI: GPT-5.3-Codex

Gemini 3.6 Flash (low) leads on average score with 9.4 vs 8.9. Gemini 3.6 Flash (low) has the lower benchmark cost at $0.517 vs $0.920. Gemini 3.6 Flash (low) is faster at 4.42s vs 16.96s, with pass rates of 97.0% vs 83.3%.

Recommended modelGemini 3.6 Flash (low)It has the best score here (9.4), while costing about 1.8x less than GPT-5.3-Codex (medium).

Last updated at: 2026-07-21

Metric Gemini 3.6 Flash Gemini 3.6 Flash low Release: 2026-07-21 GPT-5.3-Codex GPT-5.3-Codex medium Release: 2026-02-05
Score 9.4 8.9
Rank #6 #16
Reliability 10.0 10.0
Consistency 9.6 8.6
Tests Correct
Attempt pass rate 97.0% 83.3%
Flaky tests 1 4
Total Runs 66 66
Cost per result 2.461 5.748
Total Cost $0.517 $0.920
Input Price $1.500 / 1M $1.750 / 1M
Output Price $7.500 / 1M $14.000 / 1M
Total Input Tokens 82,715 81,268
Output Tokens 5,729 6,251
Reasoning Tokens 46,633 49,274
Response Time (avg) 4.42s 16.96s
Response Time (max) 28.92s 100.93s
Response Time (total) 97.13s 373.19s

Hamster playing table tennis

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

#6 Gemini 3.6 Flash

low
Cost
$0.050
Time
28.1s
Tokens
6,731 tok

#16 GPT-5.3-Codex

medium
Cost
$0.049
Time
54.9s
Tokens
3,580 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 3.6 Flash 7.8 7.4 77.8% 1 7.28s 8,136 451 15,026
GPT-5.3-Codex 10.0 10.0 100.0% 0 19.50s 7,302 535 10,890

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