CopilotKit records 403,148 monthly visits with +199.4% month-over-month growth and Freemium pricing. HARPA AI records 537,461 monthly visits with +99.3% growth and Freemium pricing.
Open-source frontend stack for building AI agents and copilots inside your own product
One browser agent that combines every major AI model with web automation
| Dimension / Metric | | |
|---|---|---|
| Official Domain | copilotkit.ai | harpa.ai |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 403.15K (403,148) | 537.46K (537,461) |
| MoM Traffic Delta | +268.49K (+199.4%) | +267.81K (+99.3%) |
| Primary Market & Share | 🇺🇸 United States (18.9%) | 🇺🇸 United States (17%) |
| Direct Visits / mo | 179.26K | 410.05K |
| User Rating | 4.6 | 4.6 |
| Supported Platforms | Website | Website |
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.
One browser agent that combines every major AI model with web automation
Switch between GPT, Claude, Gemini, Perplexity, DeepSeek and other models from one extension on any page, without juggling separate tabs or subscriptions.
Summarise long articles, PDFs and YouTube videos, ask follow-up questions about the content, or jump to the relevant timestamp in a video.
Track page changes, price drops and back-in-stock alerts across e-commerce sites, with notifications when something moves.
Extract structured data from websites, fill forms, click through flows and trigger Zapier, Make.com, IFTTT or n8n chains.
Provides a richer all-in-one workspace with writing and painting tools, but is less focused on customizable scraping macros.
Provides a richer all-in-one workspace with writing and painting tools, but is less focused on customizable scraping macros.
Offers a cleaner multi-model browser sidebar experience, but lacks HARPA's advanced no-code web automation macros.
Offers a cleaner multi-model browser sidebar experience, but lacks HARPA's advanced no-code web automation macros.
Stronger multi-model model selection and email integration, but offers less granular browser task automation workflows.
Stronger multi-model model selection and email integration, but offers less granular browser task automation workflows.
SpecialistGreat for social highlighting and YouTube knowledge capture, but offers less automated web workflow scripting than HARPA.
SpecialistGreat for social highlighting and YouTube knowledge capture, but offers less automated web workflow scripting than HARPA.
SpecialistThe agentic AI browser that reads your tabs, files, and screenshots as context
SpecialistThe agentic AI browser that reads your tabs, files, and screenshots as context
SpecialistExcels at natural-language web scraping and structured data extraction, but lacks general-purpose conversational LLM sidebars.
SpecialistExcels at natural-language web scraping and structured data extraction, but lacks general-purpose conversational LLM sidebars.
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.
SpecialistA private Chromium browser with a built-in AI agent and offline LLM
SpecialistA private Chromium browser with a built-in AI agent and offline LLM
SpecialistFaster automated summaries injected directly into search results, but lacks comprehensive browser automation and macro tools.
SpecialistFaster automated summaries injected directly into search results, but lacks comprehensive browser automation and macro tools.
Simpler bookmark management and sidebar chat interface, but lacks robust automated web monitoring and scraping triggers.
Simpler bookmark management and sidebar chat interface, but lacks robust automated web monitoring and scraping triggers.
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.
