Navigate
AI BENCHY
Advertise here

Google: Gemini 3.5 Flash vs OpenAI: GPT-5.3-Codex

GPT-5.3-Codex (medium) leads on average score with 8.9 vs 6.8. Gemini 3.5 Flash (minimal) has the lower benchmark cost at $0.300 vs $0.920. Gemini 3.5 Flash (minimal) is faster at 2.65s vs 16.96s, with pass rates of 65.2% vs 83.3%.

Recommended modelGPT-5.3-Codex (medium)It has the strongest score in this comparison (8.9) and the best overall balance of cost and response time across all 2 models.

Last updated at: 2026-07-25

Metric Gemini 3.5 Flash Gemini 3.5 Flash minimal Release: 2026-05-19 GPT-5.3-Codex GPT-5.3-Codex medium Release: 2026-02-05
Score 6.8 8.9
Rank #96 #18
Reliability 10.0 10.0
Consistency 9.6 8.6
Tests Correct
Attempt pass rate 65.2% 83.3%
Flaky tests 1 4
Total Runs 66 66
Cost per result 2.138 5.748
Total Cost $0.300 $0.920
Input Price $1.500 / 1M $1.750 / 1M
Output Price $9.000 / 1M $14.000 / 1M
Total Input Tokens 100,753 81,268
Output Tokens 16,454 6,251
Reasoning Tokens 0 49,274
Response Time (avg) 2.65s 16.96s
Response Time (max) 25.26s 100.93s
Response Time (total) 58.27s 373.19s

Hamster playing table tennis

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

#96 Gemini 3.5 Flash

minimal
Cost
$0.041
Time
20.4s
Tokens
4,608 tok

#18 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 3.5 Flash 5.6 9.9 33.3% 0 2.75s 8,122 3,456 0
GPT-5.3-Codex 10.0 10.0 100.0% 0 19.50s 7,302 535 10,890

Quick Compare

Switch Comparison Pair