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IFAI

GPT-5.3 Codex

OpenAIClosedReleased Feb 5, 2026

Rank on Coding, week by week

Its best rank each week
Aug 24#65
Aug 31#70
Sep 7#72
Sep 14#72
Sep 21#78
Sep 28#83
Oct 5#86
Oct 12#90
Oct 19#94
Oct 26#96
Nov 2#97
Nov 9#98

Scores by variant

Reasoning efforts and resolutions of the same model are ranked separately.

Coding · WebDev arena
  • GPT-5.3-Codex (Codex Harness)#981,406
  • GPT-5.3-Codex (Codex Harness)#1141,371

In the news: GPT-5.3 Codex

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