Skip to main content
Pi Labs develops state-of-the-art language models for LLM evaluation and search. Our core technology is Pi Scorer, a deterministic, fast foundation model that scores text against rubrics of natural-language questions. Pi Scorer and our other services are accessible via our REST API and SDKs for Python and JavaScript. Our SDKs are generated with Stainless, ensuring type safety, up-to-date documentation, and perfect parity with our API endpoints. Choose your preferred approach to get started:

JavaScript SDK

Use our JavaScript SDK for Node.js, browsers, and modern runtimes like Deno and Bun. Perfect for web applications and serverless functions.

Python SDK

Get started with our Python SDK for server-side applications and data science workflows. Full asyncio support and type safety included.

REST API Reference

Explore our complete API documentation with interactive examples, parameter details, and response schemas for all endpoints.