CopilotKit
The frontend stack for agents: generative UI, shared state and human-in-the-loop for web, mobile, Slack and Teams.
Sources and review
Checked against public documentation on . Suitability guidance is our editorial judgment; this is not a performance benchmark or an endorsement.
Putting an existing agent in front of users with rich, interactive UI rather than a plain chat box.
About CopilotKit
CopilotKit is an SDK for full-stack agentic applications that sits between your agents and your users, providing generative UI, shared state and human-in-the-loop workflows for React, Angular, Vue and React Native and inside Slack and Microsoft Teams. Its makers created the AG-UI protocol, which the README says Google, LangChain, AWS, Microsoft, Mastra and PydanticAI have adopted. An optional CopilotKit Intelligence layer adds persistent threads and user memories in production.
CopilotKit is listed in this index written primarily in TypeScript, with 38k stars on GitHub. Its latest recorded repository push was in November 2026; that is not an ASE editorial review date.
npx copilotkit@latest createCopilotKit and related category tools
Alternatives guide →| Record | Stars | Pricing | ||
|---|---|---|---|---|
| CopilotKitthis listing | 38k | TypeScript | MIT | Costs not checked |
| Koog | 4.6k | Kotlin | Apache-2.0 | Costs not checked |
| AgentScope | 35k | Python | Apache-2.0 | Costs not checked |
| open-multi-agent | 7.0k | TypeScript | MIT | Costs not checked |
| youtu-agent | 4.6k | Python | — | Costs not checked |
| LangGraph | 44k | Python | MIT | Framework code; models, persistence, tools and hosting cost separately |
