Best AI coding tools for larger projects in 2026?
I know this kind of question comes up a lot, but AI tools change so fast that older threads don’t feel that relevant anymore, so I wanted to ask again based on my current setup.
I’m working on a few hobby projects, some of which are fairly large C++ codebases in Visual Studio.
Right now I’ve mainly been using ChatGPT (o1, not Pro). It works fine for smaller tasks, but once the project gets more complex or I need changes across multiple files, it starts to lose consistency or gives answers that don’t quite fit the full context.
What I’m trying to figure out is what people are actually using for bigger projects where context really matters.
Ideally looking for something that can:
- handle larger codebases without losing track of structure
- understand relationships across multiple files, not just single snippets
- help with debugging and refactoring in a more reliable way
- feel at least as capable as o1, if not better
Budget isn’t a huge issue, but I’d prefer something around the $20/month range if possible since I had mixed results with higher tiers before committing.
What’s actually working well for this kind of workflow right now?