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Ask HN: GPT 5.2 has reverted knowledge cutoff to 2024
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, 2025
Today: June, 2024
Does this mean the "5.2 High Model" is actually an older model? Code quality-wise, subjectively, it sure feels like it.
- uberman 9mo agoWhy do you feel an older cut off degrades the model? Perhaps it improves it as the model has limited training on AI garbage.
- unsupp0rted 9mo agoThat's a possible hypothesis, but qualitatively the model seems to be so much less capable than it was even 4 hours ago. And I'm talking about GPT 5.2 High (non-codex), which is the best trade-off model for capability vs. speed. It's like talking to a senior programmer who all of a sudden experienced a traumatic injury. Noticeable.
- uberman 9mo agoInteresting. For what it is worth, I use Claude Opus at the moment and I am generally impressed.
- unsupp0rted 9mo agoUpdate: > 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/2018838297221726482 https://x.com/OpenAIDevs/status/2018838297221726482 Same model? Then why is the cutoff date on 5.2 that of Codex, i.e. 2024?