21st

21st

21st.dev
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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.

About

Mastra is a powerful TypeScript framework for building intelligent AI agents that can execute tasks, access knowledge bases, and maintain memory persistently within workflows. This framework simplifies the process of creating and deploying AI-powered agents by leveraging TypeScript’s capabilities to streamline development. With features like customizable agent instructions, memory, and task orchestration, Mastra provides developers with the tools to build and scale AI agents for various applications, from personal assistants to specialized domain experts.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

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

Audience

Mastra is ideal for developers, engineers, and tech teams looking to build scalable, AI-driven agents and workflows using TypeScript for a variety of applications like automation, personal assistants, and AI integrations

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version
Free Trial

Pricing

Free
Free Version
Free Trial

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
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

21st.dev
21st.dev/

Company Information

Mastra AI
Founded: 2024
United States
mastra.ai/

Alternatives

Alternatives

AgentKit

AgentKit

OpenAI
Flowise

Flowise

Flowise AI

Categories

Categories

Integrations

Alkemi
Apify
Cerebras
Claude
GPT-4
GPT-4o
Gemini
Gemini Enterprise
Groq
JavaScript
Llama
Mistral AI
Model Context Protocol (MCP)
OpenAI
React
Tailwind CSS
TypeScript
shadcn/ui

Integrations

Alkemi
Apify
Cerebras
Claude
GPT-4
GPT-4o
Gemini
Gemini Enterprise
Groq
JavaScript
Llama
Mistral AI
Model Context Protocol (MCP)
OpenAI
React
Tailwind CSS
TypeScript
shadcn/ui
Claim 21st and update features and information
Claim 21st and update features and information
Claim Mastra AI and update features and information
Claim Mastra AI and update features and information