If you don't like what ClosedAI is doing here: With Qwen3.8-27B released (notebookchat.com/index.php?topic=319983.0), which Qwen compares to Opus4.6 Max, there's maybe less need for paid APIs, at least for certain tasks.
More about running AI locally: notebookchat.com/index.php?topic=315954.0 ("Your own ChatGPT, offline: AI without the cloud on your laptop") and comments.
AI LLM models news and chat: reddit.com/r/LocalLLaMA.
OpenAI has switched on Computer History in the ChatGPT app for macOS. It records clicks, keystrokes and app switches, then turns them into a timeline and memories. OpenAI's own documentation says the files are not encrypted and that other programs on your Mac may be able to read them.