/AI7d 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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Tibo@thsottiaux#768inAI

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 · 675.6K Views
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VIEWS68.3KLIKES946REPLIES41
Tibo@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1% of usage in production and is considered quite outdated!

Tibo@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.

7dViews 68.3KLikes 946Bookmarks 12
BOOKMARKS38RETWEETS20
Chubby♨️@kimmonismus

The old models are being buried. And space is being made for new ones.

I can already smell GPT-5.6.

Tibo@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.

7dViews 56.2KLikes 886Bookmarks 38