1h ago

Thibault Sottiaux, OpenAI Codex engineering lead, says GPT-5.2 and GPT-5.3-Codex will be sunset from Codex on June 2

Both models will remain accessible to developers via API

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Original post
OPTibo#768Tibo@THSOTTIAUX

To simplify our Codex compute fleet management, we will be sunsetting GPT-5.2 and GPT-5.3-Codex in Codex on June 2nd when logged in with your ChatGPT account. For free plans, GPT-5.5 will be the default frontier model to build and work with going forward. These models will remain available on our API.

7:59 AM · May 27, 2026 View on X
REPLYTibo#768Tibo@THSOTTIAUX

Thinking back, quite crazy to think about the progress that was made since December last year when GPT-5.2 was released.

It now is seeing <1% of usage in production and is considered quite outdated!

TiboTibo@thsottiaux

To simplify our Codex compute fleet management, we will be sunsetting GPT-5.2 and GPT-5.3-Codex in Codex on June 2nd when logged in with your ChatGPT account. For free plans, GPT-5.5 will be the default frontier model to build and work with going forward. These models will remain available on our API.

2:59 PM · May 27, 2026 · 115.2K Views
3:00 PM · May 27, 2026 · 23.9K Views
QUOTE POSTrohit#1220rohit@KRISHNANROHIT

@thsottiaux It's the right thing to do but gpt 5.2 is your best creative model at the moment. See this:

rohitrohit@krishnanrohit

http://x.com/i/article/2058941883498553344

6:09 PM · May 25, 2026 · 14.6K Views
3:12 PM · May 27, 2026 · 1.4K Views