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features
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support

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Description

21st is a development platform designed to help engineers quickly build and deploy AI agents inside their applications. The platform provides a specialized SDK that simplifies the process of defining agent behavior, integrating tools, and connecting AI models. Developers can create agents using familiar technologies such as Next.js, React, TypeScript, Python, and Node.js, making integration straightforward for modern applications. Once an agent is defined, the platform allows it to be deployed with a single command while automatically handling infrastructure requirements. 21st provides sandboxed execution environments through E2B sessions, ensuring that agent operations run securely and independently. The platform includes a ready-to-use chat interface component that can be embedded directly into an app for user interaction. Additional features include token streaming, conversation history, tool execution, and built-in observability for debugging and monitoring. Developers can replay sessions and trace tool calls to better understand how agents behave during execution. The system also supports spend limits, authentication controls, and rate limiting to manage AI usage across users. By combining development tools with managed infrastructure, 21st helps teams launch scalable AI agents without building complex backend systems.

Description

The Nexa SDK serves as a comprehensive developer toolkit that enables the local execution and deployment of any AI model on nearly any device equipped with NPUs, GPUs, and CPUs, facilitating smooth operation without reliance on cloud infrastructure. It features a rapid command-line interface, Python bindings, and mobile SDKs for both Android and iOS, along with compatibility for Linux, allowing developers to seamlessly incorporate AI capabilities into applications, IoT devices, automotive systems, and desktop environments with minimal setup and just one line of code to execute models. Additionally, it provides an OpenAI-compatible REST API and function calling, which simplifies the integration process with existing client systems. With its innovative NexaML inference engine, designed from the ground up to achieve optimal performance across all hardware configurations, the SDK accommodates various model formats such as GGUF, MLX, and its unique proprietary format. Comprehensive multimodal support is also included, catering to a wide range of tasks involving text, image, and audio, which encompasses functionalities like embeddings, reranking, speech recognition, and text-to-speech. Notably, the SDK emphasizes Day-0 support for the latest architectural advancements, ensuring developers can stay at the forefront of AI technology. This robust feature set positions Nexa SDK as a versatile and powerful tool for modern AI application development.

API Access

Has API

API Access

Has API

Screenshots View All

Screenshots View All

Integrations

Android
Apple iOS
Arch Linux
DeepSeek
Ministral 3
Ministral 3B
Python
Qwen3-Coder
React
Tailwind CSS
shadcn/ui
smol developer

Integrations

Android
Apple iOS
Arch Linux
DeepSeek
Ministral 3
Ministral 3B
Python
Qwen3-Coder
React
Tailwind CSS
shadcn/ui
smol developer

Pricing Details

Free
Free Trial
Free Version

Pricing Details

No price information available.
Free Trial
Free Version

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Vendor Details

Company Name

21st.dev

Website

21st.dev/

Vendor Details

Company Name

NexaSDK

Founded

2023

Country

United States

Website

sdk.nexa.ai/

Product Features

Product Features

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