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Scale Gymnasium provides a standardized collection of digital environments for agent training and evaluation. Whether you’re building tool-use agents, or GUI agents for browser-use or desktop-use, Gymnasium offers the environments, data, and verification systems you need.

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Environments

Website Environments

4 synthetic web appsCalendr · Cloudfile · Shopora · Pandora’s InboxFull-stack websites with databases, logging, and built-in verification

Desktop Environments

3 VM platformsWindows · Ubuntu · macOSIsolated virtual machines for computer-use agent testing

MCP Environment

45+ servers · 300+ toolsCalendar · CRM · Email · Shopping · and moreTool-based agent interactions via Model Context Protocol

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Two Ways to Use Scale Gymnasium

Web UI Guide

Try environments instantly through the Gymnasium interface

Docker Quick Start

Run environments locally with your own agent loop

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Key Capabilities

Session Isolation

Complete data isolation between test sessions ensures no cross-contamination

Comprehensive Logging

Automatic capture of all agent interactions for analysis and debugging

Built-in Verification

State checks, log validation, and rubric-based evaluation framework

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What’s Included

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Next Steps

Key Concepts

Understand Environment, Task, Artifact, and Verifier terminology

Choose Your Path

Decide between Web UI and Docker based on your needs