21st21st.dev
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Related Products
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About
21st is a developer platform that provides the fastest way to add AI agents directly into applications. The platform offers an SDK that allows developers to define, deploy, and run AI agents with minimal infrastructure setup. Developers can integrate agents using popular frameworks such as Next.js, React, TypeScript, Python, and Node.js. 21st includes built-in features like chat interfaces, session history, tool execution, memory, and real-time streaming responses. The platform also manages backend components such as sandboxed execution environments, authentication, rate limits, and observability. With support for Claude Code and Codex runtimes, developers can build agents that interact with tools, files, and APIs securely. By handling infrastructure and deployment automatically, 21st enables teams to launch production-ready AI agents quickly.
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About
OpenComputer is a managed cloud runtime for building and deploying TypeScript AI agents. Developers define agent behavior, select models and tools, and deploy agents with durable sessions, streaming, schedules, memory and versioned environments. APIs and service connections let teams use agents in applications and workflows such as coding assistance and background automation.
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Audience
Software developers, startups, and product teams that want a fast and scalable way to build and deploy AI agents inside their applications
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Audience
Developers and teams building, integrating, and operating TypeScript-based AI agents, including background agents, coding workflows, and other automated tasks.
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Not Supported
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API
Offers API
Not Supported
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API
Offers API
Supported
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Screenshots and Videos |
Screenshots and VideosNo images available
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Pricing
Free
Free Version
Supported
Free Trial
Not Supported
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PricingPAYG: machine time starts at $0.00315/min, billed per second; model calls are passed through at API rates. $10 credit to start; no monthly commitment. Pro is $20/month and Max $200/month, each prepaid as 10× usage credit. Enterprise pricing is custom.
Free Version
Not Supported
Free Trial
Not Supported
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Not Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company Information21st.dev
21st.dev/
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Company InformationOpenComputer
opencomputer.dev/
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Alternatives |
Alternatives |
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Categories |
Categories |
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Integrations
GitHub
Not Supported
Gmail
Not Supported
Google Calendar
Not Supported
Google Workspace
Not Supported
Linear
Not Supported
Model Context Protocol (MCP)
Not Supported
React
Supported
Slack
Not Supported
Tailwind CSS
Supported
shadcn/ui
Supported
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Integrations
GitHub
Supported
Gmail
Supported
Google Calendar
Supported
Google Workspace
Supported
Linear
Supported
Model Context Protocol (MCP)
Supported
React
Not Supported
Slack
Supported
Tailwind CSS
Not Supported
shadcn/ui
Not Supported
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