Claude Projects which allow attaching a bunch of files to fill up the 200k context. I wrote up a script to dump a bunch of code and documentation files to markdown as context and I add them to a bunch of Claude projects on a per topic basis.
For example, I'm currently working on a Rust/Qt desktop app so I have a project with the whole Qt6 book attached to ask questions about Qt, a project with my SQL schema and ORM/Sqlite docs to ask questions about the app's data and generate models without dealing with hallucinations, a project with all my QML files and Rust QML element code, a project with a bunch of Rust crate docs, and so on and on.
GPTs allow attaching files too but Claude Projects dump the entire contents of the files into the context rather than trying to do some hacky RAG that never works like I want it to.
For example, I'm currently working on a Rust/Qt desktop app so I have a project with the whole Qt6 book attached to ask questions about Qt, a project with my SQL schema and ORM/Sqlite docs to ask questions about the app's data and generate models without dealing with hallucinations, a project with all my QML files and Rust QML element code, a project with a bunch of Rust crate docs, and so on and on.
GPTs allow attaching files too but Claude Projects dump the entire contents of the files into the context rather than trying to do some hacky RAG that never works like I want it to.