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AI Engineering Academy · Lesson

Instructor: Typed Extraction with Pydantic

Use the instructor library to patch the OpenAI client so it automatically retries and validates responses against your Pydantic schema until extraction succeeds.

What Is the Instructor Library?

The instructor library is a thin wrapper around the OpenAI client that makes structured extraction reliable. Instead of hoping the model returns valid JSON, instructor enforces your Pydantic schema and automatically retries if validation fails. It eliminates the need to write custom parsing and retry logic yourself.

Installing Instructor

Install instructor with a single pip command. It requires pydantic v2 and the openai SDK. Once installed, you patch the OpenAI client with instructor.patch() to get the enhanced client that supports the response_model parameter on every call.

pip install instructor openai pydantic

All lessons in this course

  1. Instructor: Typed Extraction with Pydantic
  2. Handling Partial and Missing Data
  3. Batch Processing with Async and Queues
  4. Schema Evolution and Backward Compatibility
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