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Google: Gemini 3.1 Flash Lite Preview vs OpenAI: GPT-5.3-Codex

Summary

GPT-5.3-Codex (medium) leads on average score with 8.9 vs 6.4. Gemini 3.1 Flash Lite Preview has the lower benchmark cost at $0.018 vs $0.740. Gemini 3.1 Flash Lite Preview is faster at 1.21s vs 16.22s, with pass rates of 60.3% vs 82.5%.

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: 2026-07-14

Metric Gemini 3.1 Flash Lite Preview Gemini 3.1 Flash Lite Preview none Release: 2026-03-03 GPT-5.3-Codex GPT-5.3-Codex medium Release: 2026-02-05
Score 6.4 8.9
Rank #102 #13
Reliability 10.0 10.0
Consistency 9.7 8.5
Tests Correct
Attempt pass rate 60.3% 82.5%
Flaky tests 1 4
Total Runs 63 63
Cost per result 0.148 4.932
Total Cost $0.018 $0.740
Input Price $0.250 / 1M $1.750 / 1M
Output Price $1.500 / 1M $14.000 / 1M
Total Input Tokens 37,582 34,299
Output Tokens 5,547 2,357
Reasoning Tokens 0 46,189
Response Time (avg) 1.21s 16.22s
Response Time (max) 3.39s 100.93s
Response Time (total) 25.45s 340.67s

Generation showcase

Hamster playing table tennis

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

#102 Gemini 3.1 Flash Lite Preview

none
Cost
$0.003
Time
4.7s
Tokens
1,827 tok

#13 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 3.1 Flash Lite Preview 5.5 10.0 33.3% 0 967ms 8,128 670 0
GPT-5.3-Codex 10.0 10.0 100.0% 0 19.50s 7,302 535 10,890

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