Programming Tutorials

  You have successfully uploaded a file. You have the   file_id . You created an Assistant with the   file_search   tool enabled. Yet, when you query the Assistant about the document, it apologizes and claims it doesn't have access to that information, or worse, it hallucinates an answer. This is the most common frustration with the OpenAI Assistants API v2. The issue is rarely with the file itself. It usually stems from a misunderstanding of how the  v2 Vector Store architecture  decouples files from Assistants, or how the  run  orchestration handles tool selection. This guide provides a rigorous root cause analysis and a production-grade Python solution to ensure your RAG (Retrieval-Augmented Generation) pipeline actually retrieves data. The Root Cause: Why "Attached" Doesn't Mean "Indexed" In the deprecated v1 API, you simply attached a file to an Assistant. In v2, OpenAI introduced a strictly managed RAG pipeline involving  Vector Stores ...