21st

21st

21st.dev
+
+

Related Products

  • Gemini Enterprise Agent Platform
    1,161 Ratings
    Visit Website
  • BAND
    3 Ratings
    Visit Website
  • Retool
    598 Ratings
    Visit Website
  • Google Cloud Run
    349 Ratings
    Visit Website
  • Apify
    1,800 Ratings
    Visit Website
  • Chainstack
    34 Ratings
    Visit Website
  • cside
    37 Ratings
    Visit Website
  • Checksum.ai
    2 Ratings
    Visit Website
  • LM-Kit.NET
    29 Ratings
    Visit Website
  • Redlist
    64 Ratings
    Visit Website

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.

About

Layercode is a cloud-based developer platform that makes it easy to build production-ready, low-latency voice AI agents by handling the real-time infrastructure so you can focus on your agent’s logic; it manages WebSockets, voice activity detection, global edge deployment, and voice model integrations while giving you full control over how your agent thinks, speaks, and responds. It enables natural, fluid voice conversations with sub-second response times and human-like turn-taking, offers observability tools so you can inspect calls, latency, and failures in production, and fits naturally into modern TypeScript and Next.js stacks with simple CLI and SDK support so you can receive text and send text back. With Layercode, you can avoid vendor lock-in by hot-swapping leading voice and transcription model providers, maintain complete flexibility by plugging in your own AI agent backend, and deploy voice agents across web, mobile, and phone interfaces.

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

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

Audience

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

Audience

Software developers building real-time conversational AI and voice-enabled applications who need dependable cloud infrastructure to deploy low-latency, production-ready voice AI agents

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version Supported
Free Trial Not Supported

Pricing

$0.04 per minute
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported

Company Information

21st.dev
21st.dev/

Company Information

Layercode
United Kingdom
layercode.com

Alternatives

Alternatives

Categories

AI SDKs Supported
UI Design Supported

Categories

AI Voice Agents Supported

Integrations

React Supported
Cartesia Sonic Not Supported
Claude Not Supported
CrewAI Not Supported
ElevenLabs Not Supported
Gemini Not Supported
Go Not Supported
JavaScript Not Supported
LangChain Not Supported
LlamaIndex Not Supported
Next.js Not Supported
OpenAI Not Supported
Python Not Supported
Rime Not Supported
Tailwind CSS Supported
TypeScript Not Supported
shadcn/ui Supported

Integrations

React Supported
Cartesia Sonic Supported
Claude Supported
CrewAI Supported
ElevenLabs Supported
Gemini Supported
Go Supported
JavaScript Supported
LangChain Supported
LlamaIndex Supported
Next.js Supported
OpenAI Supported
Python Supported
Rime Supported
Tailwind CSS Not Supported
TypeScript Supported
shadcn/ui Not Supported
Claim 21st and update features and information
Claim 21st and update features and information
Claim Layercode and update features and information
Claim Layercode and update features and information