GPT 5.2 has reverted knowledge cutoff to 2024

Question

With yesterday's release of the Codex App, OpenAI appears to be degrading their flagship models behind the scenes.Ask "GPT 5.2 High" (non-Codex model) what its knowledge cutoff is.Before: August, 2025Today: June, 2024Does this mean the "5.2 High Model" is actually an older model? Code quality-wise, subjectively, it sure feels like it.

uberman · Accepted Answer

Why do you feel an older cut off degrades the model? Perhaps it improves it as the model has limited training on AI garbage.

unsupp0rted · Answer

Update:> GPT-5.2 and GPT-5.2-Codex are now 40% faster.> We have optimized our inference stack for all API customers.> Same model. Same weights. Lower latency.> https://x.com/OpenAIDevs/status/2018838297221726482Same model? Then why is the cutoff date on 5.2 that of Codex, i.e. 2024?