Pi Labs

AI platform for building custom evaluation and scoring systems for LLMs.

The AI REPORT pick

Productivity

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Overview

ABOUT

Pi Labs offers an AI-powered platform designed to automatically build evaluation systems (evals) for AI applications, particularly those involving Large Language Models (LLMs) and agents. It enables users to create custom scoring models that precisely match user feedback and prompts, ensuring highly accurate and consistent evaluation. The platform integrates seamlessly with various existing tools and provides a fast, highly accurate foundation model called Pi Scorer for comprehensive metrics, observability, and agent control across the entire AI stack.

USE CASE

Productivity

KEY FEATURES

Automatically builds evaluation systems (evals) to match user feedback and prompts.; Provides accurate and consistent scoring, unlike variable LLM-as-judge methods.; Integrates with various tools like Sheets, PromptFoo, GRPO, and CrewAI.; Intelligently identifies what metrics to measure for your application.; Features Pi Scorer, a foundation model that scores more accurately than Deepseek and GPT 4.1.; Offers extremely fast scoring, processing 20+ custom dimensions in less than 100ms.; A single scorer can be used across the entire AI stack (offline evals, online observability, training data quality, model optimization, agent control flows).; 32K context window for Pi Scorer.; Currently supports text-only evaluation (other modalities coming soon).

Meta

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Enterprise Custom

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Startup (1–10)

United States

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