whereismyai
Instructor
Instructor is a multi-language library that extracts structured, validated data from large language models.
Instructor is a multi-language library designed to extract structured data from large language models using type-safe schemas. It works across Python, TypeScript, Go, Ruby, Elixir, and Rust, supporting over fifteen providers such as OpenAI, Anthropic, Google, Ollama, and DeepSeek. Built on top of Pydantic, the software offers automatic validation, retries, streaming support, and deep nesting. Developers use it for schema-first extraction without extra agents. The tool also includes a hooks system for logging and monitoring, as well as full type inference for IDE support.
Instructor at a glance
- Best for: Software engineer
- Runs on: open source, API
- Pricing: Free
- Released: June 2023
- Category: AI coding tool
- Website: python.useinstructor.com
Key features
- Structured data extraction using Pydantic models
- Automatic retries on validation failures
- Streaming support for partial responses and lists
- Multi-provider compatibility across 15+ services
- Full type inference and IDE support
- Support for open source models via Ollama and local runtimes
- Hooks system for event logging and custom error handling
Use it for
- Extracting validated JSON data from LLM responses
- Streaming partial objects and iterables in real time
- Running local open source models with structured outputs
- Handling custom validation rules during data extraction
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