ChatKit records 3,846 monthly visits with -12.2% month-over-month growth and Paid pricing. CopilotKit records 403,148 monthly visits with +199.4% growth and Freemium pricing.
A refined ChatGPT interface powered by your own API key
Open-source frontend stack for building AI agents and copilots inside your own product
| Dimension / Metric | | |
|---|---|---|
| Official Domain | chatkit.app | copilotkit.ai |
| Pricing Model | Paid | Freemium |
| Monthly Visits | 3.85K (3,846) | 403.15K (403,148) |
| MoM Traffic Delta | -534 (-12.2%) | +268.49K (+199.4%) |
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (18.9%) |
| Direct Visits / mo | 1.51K | 179.26K |
| User Rating | 4.3 | 4.6 |
| Supported Platforms | Website | Website |
A refined ChatGPT interface powered by your own API key
Connect your own OpenAI API key so you control model choice, spend and data flow rather than paying a bundled subscription.
Responses stream token by token, keeping long conversations responsive and easy to follow.
Save reusable prompts so repetitive tasks take one click instead of retyping the same instructions.
Dictate prompts by voice and bookmark the conversations or answers you want to return to.
Open-source frontend stack for building AI agents and copilots inside your own product
Ship a working copilot UI in minutes with drop-in components for React, Angular, Vue, iOS, and Android, or go fully headless for total control over rendering.
A general-purpose bi-directional link between your app and any agent backend, with integrations for the OpenAI Agents SDK, Claude Agent SDK, LangChain, Google ADK, AWS Strands, Mastra, and many more.
Agents return real UI — charts, forms, tables, and approval prompts rendered with your own design system on the same screen the user is already working in.
Let agents read and write application state, call your frontend functions, and pause for human approval before sensitive actions are executed.
Free / Open-sourceOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
Free / Open-sourceOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
Free / Open-sourceHigh-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
Free / Open-sourceHigh-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
Free / Open-sourceOne app to chat with GPT, Claude, Gemini and hundreds of other AI models
Free / Open-sourceOne app to chat with GPT, Claude, Gemini and hundreds of other AI models
Free / Open-sourceChat with 30+ leading AI models in one clean, fast workspace
Free / Open-sourceChat with 30+ leading AI models in one clean, fast workspace
Free / Open-sourceSelf-hosted AI workspace for local and cloud models
Free / Open-sourceSelf-hosted AI workspace for local and cloud models
Free / Open-sourceOne privacy-first AI client for GPT, Claude, Gemini and more
Free / Open-sourceOne privacy-first AI client for GPT, Claude, Gemini and more
Free / Open-sourceThe best frontend for AI.
Free / Open-sourceThe best frontend for AI.
Free / Open-sourceCompare GPT, Claude, and Gemini answers side by side in one chat
Free / Open-sourceCompare GPT, Claude, and Gemini answers side by side in one chat
SpecialistCombines conversational workflow drafting with visual flow builders, focusing on workflow automation rather than frontend copilot embedding.
SpecialistCombines conversational workflow drafting with visual flow builders, focusing on workflow automation rather than frontend copilot embedding.
SpecialistIDE extension providing model-agnostic AI coding assistance rather than a frontend UI component library for web applications.
SpecialistFocuses on Python-based agent building and deployment rather than frontend React component integration for web applications.
Delivers a managed platform for building and deploying conversational agents, though less focused on open-source frontend React UI kits.
Delivers a managed platform for building and deploying conversational agents, though less focused on open-source frontend React UI kits.
