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

Last updated at: 2026-04-16

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 7.9 8.6
Rank #29 #7
Consistency 9.6 8.7
Tests Correct
Attempt pass rate 70.4% 83.3%
Flaky tests 1 3
Total Runs 54 54
Cost per result 0.130 4.405
Total Cost $0.016 $0.573
Input Price $0.250 / 1M $1.750 / 1M
Output Price $1.500 / 1M $14.000 / 1M
Output Tokens 5,361 2,279
Reasoning Tokens 0 35,179
Response Time (avg) 1.30s 15.38s
Response Time (max) 3.39s 100.93s
Response Time (total) 23.42s 276.91s

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Score vs Total Cost

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Score vs Response Time (avg)

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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 3.1 Flash Lite Preview 7.5 8.4 66.7% 1 1.04s 1,092 0
GPT-5.3-Codex 8.7 7.9 91.7% 1 4.16s 240 1,722
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite Preview 10.0 10.0 100.0% 0 1.47s 640 0
GPT-5.3-Codex 10.0 10.0 100.0% 0 8.95s 491 1,530
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite Preview 3.0 10.0 0.0% 0 3.20s 339 0
GPT-5.3-Codex 10.0 10.0 100.0% 0 19.56s 364 2,731
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite Preview 10.0 10.0 100.0% 0 1.22s 399 0
GPT-5.3-Codex 10.0 10.0 100.0% 0 3.07s 234 728
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite Preview 5.3 10.0 33.3% 0 942ms 568 0
GPT-5.3-Codex 5.9 7.2 55.6% 1 64.31s 64 25,308
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite Preview 4.0 10.0 0.0% 0 741ms 69 0
GPT-5.3-Codex 4.6 10.0 0.0% 0 4.87s 187 331
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite Preview 10.0 10.0 100.0% 0 1.13s 574 0
GPT-5.3-Codex 10.0 10.0 100.0% 0 3.04s 93 693
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite Preview 10.0 10.0 100.0% 0 972ms 898 0
GPT-5.3-Codex 9.0 7.9 88.9% 1 5.12s 352 1,644
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3.1 Flash Lite Preview 10.0 10.0 100.0% 0 3.39s 782 0
GPT-5.3-Codex 10.0 10.0 100.0% 0 6.37s 254 492

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