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Google: Gemini 3.1 Pro Preview vs OpenAI: GPT-5.3-Codex

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

Summary

Metric Google: Gemini 3.1 Pro Preview medium Release: Unknown release date OpenAI: GPT-5.3-Codex medium Release: Unknown release date
Rank #2 #7
Score 9.36 7.93
Consistency 10.00 8.84
Cost per result 2.443 4.641
Total Cost $0.318 $0.465
Tests Correct
Wrong Tests 1 4
Attempt pass rate 92.9% 78.6%
Flaky tests 0 2
Output Tokens 1,000 1,201
Reasoning Tokens 22,936 30,056

Category Breakdown

Anti-AI Tricks Score Consistency Attempt pass rate Flaky tests Tests Correct Output Tokens Reasoning Tokens
Google: Gemini 3.1 Pro Preview 10.00 10.00 100.0% 0 106 2,533
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 3.1 Pro Preview 10.00 10.00 100.0% 0 292 3,164
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 3.1 Pro Preview 7.00 10.00 66.7% 0 18 10,688
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 3.1 Pro Preview 10.00 10.00 100.0% 0 72 2,436
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 3.1 Pro Preview 10.00 10.00 100.0% 0 238 3,133
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 3.1 Pro Preview 10.00 10.00 100.0% 0 274 982
OpenAI: GPT-5.3-Codex 10.00 10.00 100.0% 0 254 492

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