The Eclipse Foundation just opened up its Theia AI platform and an alpha Theia IDE that let you bolt the LLM of your choice into your workflow and actually see what it’s doing. You get complete control over prompt engineering and agent behavior, can plug in a local model or a cloud model, and even wire up external tools via Model Context Protocol. The AI‑powered Theia IDE bakes in coding agents, an AI terminal and context sensitive assistants while giving you license‑compliance scanning via SCANOSS. Instead of being locked into a proprietary copilot, you can customize the entire AI stack to your needs and still keep your code private, which is the kind of hackable openness Hacker News loves.