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

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Last updated at : 2026-02-27 15:16

Summary

Metric Google: Gemini 3 Flash Preview medium Release: Unknown release date OpenAI: GPT-5.3-Codex medium Release: Unknown release date
Rank #1 #7
Score 9.93 7.93
Consistency 10.00 8.84
Cost per result 0.815 4.641
Total Cost $0.114 $0.465
Tests Correct
Wrong Tests 0 4
Attempt pass rate 100.0% 78.6%
Flaky tests 0 2
Output Tokens 1,111 1,201
Reasoning Tokens 34,409 30,056

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Google: Gemini 3 Flash Preview 10.00 10.00 100.0% 0 299 3,127
OpenAI: GPT-5.3-Codex 10.00 10.00 100.0% 0 216 1,421
Data parsing and extraction Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Google: Gemini 3 Flash Preview 10.00 10.00 100.0% 0 292 5,467
OpenAI: GPT-5.3-Codex 10.00 10.00 100.0% 0 234 735
Domain specific Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Google: Gemini 3 Flash Preview 10.00 10.00 100.0% 0 12 15,295
OpenAI: GPT-5.3-Codex 4.00 7.21 55.6% 1 64 25,308
Instructions following Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Google: Gemini 3 Flash Preview 10.00 10.00 100.0% 0 72 4,092
OpenAI: GPT-5.3-Codex 9.00 10.00 50.0% 0 93 693
Puzzle Solving Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Google: Gemini 3 Flash Preview 9.67 10.00 100.0% 0 202 5,298
OpenAI: GPT-5.3-Codex 7.00 7.38 77.8% 1 340 1,407
Tool Calling Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Google: Gemini 3 Flash Preview 10.00 10.00 100.0% 0 234 1,130
OpenAI: GPT-5.3-Codex 10.00 10.00 100.0% 0 254 492

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