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Instructor

Instructor is an open-source library designed to simplify the process of structuring outputs from large language models (LLMs).

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Our verdict

Who it's for

Effortlessly structure large language model outputs with Python and TypeScript.

Who should look elsewhere

Requires familiarity with Pydantic or Zod for schema definition

Pros

  • +Greatly simplifies LLM output parsing and validation
  • +Reduces development time by eliminating manual parsing logic
  • +Improves reliability and robustness of LLM integrations
  • +Supports multiple programming languages and LLM providers
  • +Open-source and actively maintained

Cons

  • −Requires familiarity with Pydantic or Zod for schema definition
  • −Adds another dependency to the project
  • −Debugging issues with schema adherence might require understanding LLM behavior

Key features

  • ✓Define output schemas with Pydantic (Python) or Zod (TypeScript)
  • ✓Automatic re-asking for invalid LLM responses
  • ✓Supports various LLM providers (OpenAI, Anthropic, Google, etc.)
  • ✓Type-safe output parsing
  • ✓Integration with existing LLM client libraries
  • ✓Declarative schema definition

Pricing

No public pricing plans recorded.

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