CopilotKit vs Deep Agents
CopilotKit and Deep Agents are both agent frameworks. CopilotKit is published by CopilotKit and Deep Agents by LangChain. On GitHub, CopilotKit has 38,211 stars and Deep Agents has 30,550. Both were last active in Oct 2026. The table lines up where they differ (publisher, weekly downloads, category and languages) and has the install commands for both. Everything here comes from the listings' public sources and is refreshed daily. CopilotKit describes itself as: 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. Deep Agents: Opinionated agent harness on LangGraph with sub-agents, filesystem access, context management, persistent memory and approval of tool calls. Licenses: CopilotKit MIT, Deep Agents MIT.
Updated Oct 26, 2026 · Built from catalog data; how we rank and grade
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.
Deep Agents
LangChain
Opinionated agent harness on LangGraph with sub-agents, filesystem access, context management, persistent memory and approval of tool calls.
Who should pick which
- Pick Deep Agents if you work in Python.
- Pick Deep Agents if you need several agents working together.
- Pick Deep Agents if you want a stable release (CopilotKit is marked beta).
From listing data only. We don't pick a winner on security beyond the grades; read how grades work.
Side by side
| Fact | CopilotKit | Deep Agents |
|---|---|---|
| Type | Harness | Harness |
| Publisher | CopilotKit | LangChain |
| License | MIT | 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 | 38,211 | 30,550 |
| Weekly downloads | 286,211 | 1,930,228 |
| Last release | Oct 16, 2026 | Oct 23, 2026 |
| Last activity | Oct 24, 2026 | Oct 24, 2026 |
Facts from each listing's public sources, checked daily. Tool lists arrive with tool scans.
Install
CopilotKit
npm install @copilotkit/react-core
Deep Agents
pip install deepagents
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 - 0.799score
Letta
Letta
Open-source agent harness for stateful agents whose memory persists and improves with use, with a terminal UI, app server and TypeScript SDK.
HarnessAFreshness: A★ 25.2K↓ 40.7K/wk - 0.787score
trueforge
truefoundry
Open-source agent harness that runs the model loop for you, with MCP tools, skills, sandboxing, approvals and a chat UI.
HarnessAFreshness: A★ 6.4K
Questions
- Is CopilotKit or Deep Agents more popular?
- CopilotKit has more GitHub stars (38,211 against 30,550). Stars measure attention, not quality, so check freshness and docs too.
- Are CopilotKit and Deep Agents open source?
- Yes: CopilotKit is MIT and Deep Agents is MIT.
Related
Cite this page
CopilotKit vs Deep Agents. Agent Mart. https://agentmart.dev/compare/copilotkit-vs-deep-agents (last updated 2026-10-26)