Claude Agent SDK (TypeScript) vs CopilotKit
Claude Agent SDK (TypeScript) and CopilotKit are both agent frameworks. Claude Agent SDK (TypeScript) is published by Anthropic and CopilotKit by CopilotKit. On GitHub, CopilotKit has 38,211 stars and Claude Agent SDK (TypeScript) has 1,831. Both were last active in Oct 2026. The table lines up where they differ (publisher, GitHub stars, weekly downloads and category) and has the install commands for both. Everything here comes from the listings' public sources and is refreshed daily. Claude Agent SDK (TypeScript) describes itself as: TypeScript SDK that gives programs Claude Code's built-in tools for reading, editing and running code, installed from npm. CopilotKit: Open-source SDK that connects AI agents to app front ends with chat UI, generative UI, shared state and human approvals; creator of the AG-UI protocol. Licenses: Claude Agent SDK (TypeScript) unknown, CopilotKit MIT.
Updated Oct 26, 2026 · Built from catalog data; how we rank and grade
Claude Agent SDK (TypeScript)
Anthropic
TypeScript SDK that gives programs Claude Code's built-in tools for reading, editing and running code, installed from npm.
CopilotKit
CopilotKit
Open-source SDK that connects AI agents to app front ends with chat UI, generative UI, shared state and human approvals; creator of the AG-UI protocol.
Who should pick which
- Pick CopilotKit if you want MCP support built in.
- CopilotKit has the larger community: 38,211 GitHub stars against 1,831.
From listing data only. We don't pick a winner on security beyond the grades; read how grades work.
Side by side
| Fact | Claude Agent SDK (TypeScript) | CopilotKit |
|---|---|---|
| Type | Harness | Harness |
| Publisher | Anthropic | CopilotKit |
| License | License unknown | MIT |
| Pricing | Not stated | Not stated |
| Runs | Not stated | Not stated |
| Auth | Not stated | Not stated |
| Hosts supported | Not stated | Not stated |
| Tools | Not listed yet | Not listed yet |
| Security grade | –Security: not graded yet | –Security: not graded yet |
| Freshness grade | AFreshness: A | AFreshness: A |
| GitHub stars | 1,831 | 38,211 |
| Weekly downloads | 8,074,182 | 286,211 |
| Last release | Oct 23, 2026 | Oct 16, 2026 |
| Last activity | Oct 23, 2026 | Oct 24, 2026 |
Facts from each listing's public sources, checked daily. Tool lists arrive with tool scans.
Install
Claude Agent SDK (TypeScript)
npm install @anthropic-ai/claude-agent-sdk
CopilotKit
npm install @copilotkit/react-core
Also consider
- 0.867score
Pi Agent Core
Earendil
Minimal TypeScript agent harness with an agent runtime, multi-provider LLM API, terminal UI and coding agent CLI that users extend themselves.
HarnessAFreshness: A★ 117.6K↓ 5.1M/wk - 0.740score
Deep Agents
LangChain
Opinionated agent harness on LangGraph with sub-agents, filesystem access, context management, persistent memory and approval of tool calls.
HarnessAFreshness: A★ 30.6K↓ 1.9M/wk - 0.737score
Mastra
Mastra
TypeScript framework for AI agents and apps with graph-based workflows, memory, suspend-and-resume approvals, MCP servers and model routing.
HarnessAFreshness: A★ 29.1K↓ 1.4M/wk
Questions
- Is Claude Agent SDK (TypeScript) or CopilotKit more popular?
- CopilotKit has more GitHub stars (38,211 against 1,831). Stars measure attention, not quality, so check freshness and docs too.
- Are Claude Agent SDK (TypeScript) and CopilotKit open source?
- CopilotKit is open source (MIT); the other is unknown.
Related
- AlternativesAlternatives to Claude Agent SDK (TypeScript)
- AlternativesAlternatives to CopilotKit
- Best ofBest agent frameworks for building AI agents
- Best ofBest agent frameworks for TypeScript
- ComparisonClaude Agent SDK (TypeScript) vs Pi Agent Core
- ComparisonClaude Agent SDK (TypeScript) vs Deep Agents
- ComparisonCopilotKit vs Pi Agent Core
- ComparisonCopilotKit vs Letta
- ComparisonCopilotKit vs Deep Agents
Cite this page
Claude Agent SDK (TypeScript) vs CopilotKit. Agent Mart. https://agentmart.dev/compare/claude-agent-sdk-typescript-vs-copilotkit (last updated 2026-10-26)