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Google: Gemini 3 Flash Preview vs OpenAI: GPT-5.3 Chat

Last updated at: 2026-04-16

Metric Gemini 3 Flash Preview Gemini 3 Flash Preview medium Release: 2025-12-17 GPT-5.3 Chat GPT-5.3 Chat none Release: 2026-03-03
Score 10.0 7.7
Rank #1 #35
Consistency 10.0 8.6
Tests Correct
Attempt pass rate 100.0% 68.5%
Flaky tests 0 3
Total Runs 54 54
Cost per result 1.740 3.082
Total Cost $0.314 $0.340
Input Price $0.500 / 1M $1.750 / 1M
Output Price $3.000 / 1M $14.000 / 1M
Output Tokens 2,072 20,784
Reasoning Tokens 97,041 0
Response Time (avg) 17.60s 5.88s
Response Time (max) 79.71s 18.33s
Response Time (total) 193.57s 105.90s

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Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.13s 305 3,490
GPT-5.3 Chat 6.7 8.1 58.3% 1 3.86s 3,167 0
Coding Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 79.71s 432 48,771
GPT-5.3 Chat 10.0 10.0 100.0% 0 9.32s 1,436 0
Combined Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 50.16s 351 12,645
GPT-5.3 Chat 10.0 10.0 100.0% 0 11.96s 2,614 0
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.72s 279 5,333
GPT-5.3 Chat 10.0 10.0 100.0% 0 2.21s 942 0
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 21.12s 12 14,908
GPT-5.3 Chat 3.5 4.4 33.3% 2 13.01s 8,264 0
General Intelligence Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.09s 111 1,285
GPT-5.3 Chat 4.6 10.0 0.0% 0 1.99s 319 0
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 6.10s 72 4,558
GPT-5.3 Chat 8.3 10.0 50.0% 0 3.29s 1,455 0
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 4.43s 276 4,921
GPT-5.3 Chat 10.0 10.0 100.0% 0 2.93s 1,726 0
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Response Time (avg) Output Tokens Reasoning Tokens
Gemini 3 Flash Preview 10.0 10.0 100.0% 0 10.55s 234 1,130
GPT-5.3 Chat 10.0 10.0 100.0% 0 8.36s 861 0

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