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
Ovrin is a hosted compute platform for developers building AI agents and software that needs to run code in controlled environments. Through a REST API, Python and TypeScript SDKs, or an MCP server, users can create disposable Linux sandboxes, run shell commands and stateful code, manage files and scoped API keys, and retrieve execution output. Preconfigured environments include Claude Code, OpenAI Codex, Gemini CLI, and DeepSeek Harness; browser workflows can use Chrome and Playwright. The platform also offers persistent memory, sandbox lifecycle controls, usage metering, and concurrency limits. Typical uses include coding-agent execution, browser automation, and running model-generated code. Plans include a free tier and paid tiers with additional concurrency and usage-based compute charges.
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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 AI agents, coding agents, browser automation, or applications that need to run generated code in hosted environments.
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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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Pricing
$19/month
The Developer plan costs $19 per month plus metered compute charges based on vCPU and memory usage. The free tier includes a limited sandbox allowance and concurrency. Paid plans include higher concurrency and additional usage options.
Free Version
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
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 InformationUnited States
www.ovrin.app/
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Alternatives |
Alternatives |
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Categories |
Categories |
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Integrations
Claude
Not Supported
Cursor
Not Supported
Gemini CLI
Not Supported
Model Context Protocol (MCP)
Not Supported
OpenAI Codex
Not Supported
React
Supported
Tailwind CSS
Supported
Visual Studio Code
Not Supported
shadcn/ui
Supported
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Integrations
Claude
Supported
Cursor
Supported
Gemini CLI
Supported
Model Context Protocol (MCP)
Supported
OpenAI Codex
Supported
React
Not Supported
Tailwind CSS
Not Supported
Visual Studio Code
Supported
shadcn/ui
Not Supported
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