1d ago

OpenAI Codex team fixes GPT-5.5 performance issues

0

OpenAI Codex team resolved two issues that had degraded GPT-5.5 performance over the preceding 48 hours. Systems returned to stable operation with continued monitoring through the evening and usage limits scheduled for reset once verification finishes. Multiple user reports of reduced capability prompted the investigation, which the team addressed immediately.

Original post

i appreciate how seriously the team always takes these reports (even when the answer turns out to be 'i got used to the current level of magic and now i'd like more please')

TiboTibo@thsottiaux

Codex team is aware of reports of GPT-5.5 performing worse for some users and investigating. We don't have anything conclusive yet and systems are healthy but we will share updates as we go.

3:56 PM · May 15, 2026 · 1.4M Views
6:35 PM · May 15, 2026 · 501.9K Views

@thsottiaux I was literally thinking "wtf is codex dumb or what" in one session yesteday! Glad to see I wasn't delusional.

TiboTibo@thsottiaux

We found and fixed two issues that could explain this degradation of the capability of GPT-5.5 in Codex over the last ~ 48 hours. We are monitoring over the coming hours to fully confirm and I will reset usage limits this evening. Apologies and now is the time for /fast maxxing.

12:31 AM · May 16, 2026 · 957K Views
11:25 AM · May 16, 2026 · 980 Views

We found and fixed two issues that could explain this degradation of the capability of GPT-5.5 in Codex over the last ~ 48 hours.

We are monitoring over the coming hours to fully confirm and I will reset usage limits this evening.

Apologies and now is the time for /fast maxxing.

TiboTibo@thsottiaux

Codex team is aware of reports of GPT-5.5 performing worse for some users and investigating. We don't have anything conclusive yet and systems are healthy but we will share updates as we go.

3:56 PM · May 15, 2026 · 1.4M Views
12:31 AM · May 16, 2026 · 957K Views

Confirmed stable and recovered

TiboTibo@thsottiaux

We found and fixed two issues that could explain this degradation of the capability of GPT-5.5 in Codex over the last ~ 48 hours. We are monitoring over the coming hours to fully confirm and I will reset usage limits this evening. Apologies and now is the time for /fast maxxing.

12:31 AM · May 16, 2026 · 957K Views
6:47 AM · May 16, 2026 · 54.2K Views
ORIGINAL POSTTibo#738Tibo@THSOTTIAUX

Codex team is aware of reports of GPT-5.5 performing worse for some users and investigating. We don't have anything conclusive yet and systems are healthy but we will share updates as we go.

3:56 PM · May 15, 2026 · 1.4M Views

@Yampeleg yes. it is moronic.

Yam PelegYam Peleg@Yampeleg

something is off with gpt-5.5?

12:01 PM · May 15, 2026 · 17K Views
3:21 PM · May 15, 2026 · 4.1K Views

@thsottiaux thanks. can you do another reset in 2 days pls?

TiboTibo@thsottiaux

We found and fixed two issues that could explain this degradation of the capability of GPT-5.5 in Codex over the last ~ 48 hours. We are monitoring over the coming hours to fully confirm and I will reset usage limits this evening. Apologies and now is the time for /fast maxxing.

12:31 AM · May 16, 2026 · 957K Views
1:34 AM · May 16, 2026 · 2K Views

@thsottiaux IDK if helpful but feeling this

Alex VolkovAlex Volkov@altryne

Brooooo! I didn't understand why instead of generating a thumbnail with gpt image and nano banana pro like we always do, this motherfucker creates a PIL image of a thumbnail all of a sudden 😆 Same settings , same skill!

12:32 AM · May 15, 2026 · 2.1K Views
6:37 PM · May 15, 2026 · 1.7K Views

I smell a rates reset incoming. And I gladly take it

TiboTibo@thsottiaux

Codex team is aware of reports of GPT-5.5 performing worse for some users and investigating. We don't have anything conclusive yet and systems are healthy but we will share updates as we go.

3:56 PM · May 15, 2026 · 1.4M Views
5:20 PM · May 15, 2026 · 24.8K Views

devrel 101

TiboTibo@thsottiaux

Codex team is aware of reports of GPT-5.5 performing worse for some users and investigating. We don't have anything conclusive yet and systems are healthy but we will share updates as we go.

3:56 PM · May 15, 2026 · 1.4M Views
7:47 PM · May 15, 2026 · 857 Views
OpenAI Codex team fixes GPT-5.5 performance issues · Digg