We will also begin deprecating GPT‑4.5 Preview in the API, as GPT‑4.1 offers improved or similar performance on many key capabilities at much lower cost and latency. GPT‑4.5 Preview will be turned off in three months

Here's something I just don't understand, how can ChatGPT 4.5 be worse than 4.1? Or the only thing bad is that the OpenAI naming ability?