xAI just released the Grok Collections API. It lets you upload PDFs, Excel files, and even full codebases into a searchable knowledge base so you can build RAG apps without running your own indexing or retrieval stack. Grok ranked #1 in key evaluations: • Financial tabular and numerical data retrieval • Legal document reasoning and long context understanding • Code understanding and large file search The API supports OCR, layout aware parsing, and semantic plus keyword search for precise results. Indexing and storage are free for the first week, with usage based pricing after that. Collections are designed to remove the complexity of building and maintaining your own RAG pipeline while keeping full control over your data.