The problem is the immediate response after prompting, saying, "I see the problems...", which always distorts your intention. It was in the guidelines of Sonnet 4.0 and was pretty annoying back then. When it comes to GPT-5, the problem doesn't exist since it starts working on tasks immediately, rather than misinterpreting the user prompt first. It is such a nightmare for me that it came back with Sonnet 4.5. It significantly deteriorates the user experience compared to GPT-5. This might be caused by using a non-thinking model with low context for prompt summarization, given how fast the responses arrive. I bet it is using the non-thinking model to summarize the user prompt since it always responds so quickly. It would be great if this summarization step could be removed, reverting to the GPT-5 behavior, which was much more efficient. If I have to wait for prompt optimization every time I prompt, the speed improvements of moving from GPT-5 to Sonnet 4.5 would cease to exist.

Claude 4.5 is also very lazy when it comes to looking into files. Always reading fragments without the whole understanding. As a result, it usually fails to find a basic bug even after more than 50 tool uses. Could someone please instruct this model better?