Pi Agent Core vs stagehand

Pi Agent Core and stagehand are both agent frameworks for TypeScript. Pi Agent Core is published by Earendil and stagehand by browserbase. On GitHub, Pi Agent Core has 117,586 stars and stagehand has 25,800. Both were last active in Oct 2026. The table lines up where they differ (publisher, weekly downloads and languages) and has the install commands for both. Everything here comes from the listings' public sources and is refreshed daily. Pi Agent Core describes itself as: Minimal TypeScript agent harness with an agent runtime, multi-provider LLM API, terminal UI and coding agent CLI that users extend themselves. stagehand: SDK for browser agents with act, observe and extract calls, used from TypeScript and Python to automate sites and pull out structured data. Licenses: Pi Agent Core MIT, stagehand MIT.