Build stateful chatbots with OpenAI Assistants API v2, including Code Interpreter, File Search (10k files), and Function Calling.

• Three core tools: Code Interpreter for Python execution and file processing, File Search for semantic RAG with vector stores (10,000 files max), and Function Calling for custom tool integration
• Manages four main objects—Assistants (configured AI with instructions), Threads (persistent conversation containers), Messages (with file attachments), and Runs (async execution with polling)—enabling multi-turn stateful conversations
• Prevents 10 documented errors including vector store upload bugs, temperature conflicts with reasoning models, memory leaks in large file uploads, and race conditions in run cancellation
• ⚠️ Deprecated with sunset August 26, 2026; use openai-responses skill for new projects; this skill is for maintaining legacy chatbots only