Introduction

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.

Why Pi Scorer?

Traditional LLM evaluation is expensive, slow, and inconsistent. Pi Scorer solves these problems by providing:

Flexible Judges: Create custom rubrics with natural language questions. Score anything from factual accuracy to writing style, creativity, or domain-specific criteria.
Low cost, low latency: Our optimized models deliver consistent results at scale. Process large datasets quickly without compromising on quality.
Integrations: Connect Pi Scorer to your existing workflow with integrations for Google Sheets, PromptFoo, and more.
Pi Studio: A web-based development environment for AI quality. Track model performance over time, calibrate your rubrics, and gain insights into your AI system’s behavior.