DeepYard

CopilotKit vs LangGraph

Side-by-side comparison built from DeepYard's structured catalog. Content updated Aug 21, 2026.

Direct Answer

CopilotKit suits teams needing open-source access, generative ui focus, and 36,945 GitHub stars in current listing data. LangGraph suits teams needing open-source access, graph focus, and 40,209 GitHub stars in current listing data. This summary reflects catalog metadata only for decision support, not independent testing.

What this comparison weighs

  • Pricing and free-tier availability
  • License model and deployment fit
  • GitHub adoption and contributor depth
  • Catalog tags, integrations, and supported workflows
C

CopilotKit

React/Angular frontend SDK for AI agents with generative UI — 29K+ stars

OSSFree
36.9Ktoday199
Visit GitHub
L

LangGraph

LangChain's framework for building stateful agent graphs — 26K+ stars

OSSFree
40.2Ktoday278
Visit GitHub
MetricCopilotKitLangGraph
GitHub Stars36.9K40.2K
Contributors199278
Last CommitAug 22, 2026Aug 22, 2026
Open Issues356708
Licenseopen-sourceopen-source
Pricingopen-sourceopen-source
Free TierYesYes
Categoryframeworksframeworks
TrendingNoNo

Choose CopilotKit if you need

  • • CopilotKit is the stronger pick when Generative Ui matters because that capability is listed only on its profile.
  • • CopilotKit is the cleaner fit if you specifically need React workflows from the catalog tags.

Choose LangGraph if you need

  • • LangGraph is the stronger pick when Graph matters because that capability is listed only on its profile.
  • • LangGraph shows broader GitHub adoption with 40,209 stars versus 36,945 for CopilotKit.
  • • LangGraph has a larger visible contributor base (278 vs 199).

Meaningful differences

  • • GitHub adoption: CopilotKit shows 36,945 stars versus 40,209 for LangGraph.
  • • Contributor count: CopilotKit lists 199 contributors and LangGraph lists 278.

Shared capabilities

  • • Open Source
  • • Human In The Loop

Shared Tags

open-source

Only in CopilotKit

reacttypescriptgenerative-uiagent-frameworkfrontendhuman-in-the-loop

Only in LangGraph

graphstatefulmulti-agentlangchainpersistencepython

Limitations and evidence

  • • DeepYard compares structured public metadata; this is not an independent benchmark unless a test record is shown.
  • • Signals such as stars, contributors, and last commit indicate public activity, not purchase fit or runtime quality.
  • • Pricing and feature coverage reflect the stored listing snapshot and may lag vendor changes between refreshes.

Source links

Manifest content date: 2026-08-21

About CopilotKit

CopilotKit is a full-stack SDK for building agentic applications with generative UI. AI agents can dynamically render React components, manage shared application state, and pause for human-in-the-loop confirmation. Maintains the AG-UI Protocol (adopted by Google, LangChain, AWS, Microsoft) for standardized agent-frontend communication. Supports React and Angular frontends with Python and TypeScript backends. Integrates with LangGraph, CrewAI, and any LLM provider.

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About LangGraph

LangGraph is LangChain's framework for building stateful, multi-actor agent applications as graphs. Define agents as nodes and their interactions as edges, with built-in persistence, streaming, human-in-the-loop, and time-travel debugging. The standard for production agent orchestration in the LangChain ecosystem.

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