Audience

Software developers, startups, and product teams that want a fast and scalable way to build and deploy AI agents inside their applications

About 21st

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.

Pricing

Starting Price:
Free
Free Version:
Free Version available.

Integrations

Ratings/Reviews

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features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

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Company Information

21st.dev
21st.dev/

Videos and Screen Captures

21st Screenshot 1
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Product Details

Platforms Supported
Cloud
Training
Documentation
Support
Online

21st Frequently Asked Questions

Q: What kinds of users and organization types does 21st work with?
Q: What languages does 21st support in their product?
Q: What other applications or services does 21st integrate with?
Q: What type of training does 21st provide?
Q: How much does 21st cost?

21st Product Features