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Insights

AI

Artificial intelligence is changing how we build and maintain React and React Native apps—from code generation to testing. Find out how AI-powered tools improve your development process and help create smarter cross-platform experiences.

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Announcing Codex Plugins for React Native Development

How Codex plugins work, why they're useful for React Native development, and two plugins we built for building and testing React Native apps.

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RAG Is Dead. Long Live Context Engineering for LLM Systems

When should you skip RAG? Learn how structured context and direct LLM APIs can replace retrieval pipelines in many systems.

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A Practical Guide to LLM Model Naming Conventions

Learn how to read LLM naming conventions and choose the right model for your hardware. Discover what Q4, INT8, GPTQ, and GGUF mean and why models appear in multiple variants.

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Announcing React Native Evals

We built an open-source benchmark to measure how AI coding models handle real React Native tasks, such as animations, async state, navigation, and more.

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Building Apps Where AI Generates the UI

Most AI apps stop at chat. This article explores generative UI: letting the model describe the interface at runtime and rendering it dynamically in React using JSON Render. Includes architecture, code examples, and a real project case study.

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Agent Device: iOS & Android Automation for AI Agents

Agent Device is a lightweight CLI for AI-driven mobile automation on iOS and Android, with structured snapshots and deterministic replay.

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Announcing: React Native Best Practices for AI Agents

We're turning React Native optimization knowledge into agent-ready skills (JS, native, bundling) mapped to FPS and TTI, built from real-world production work

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Profiling MLC-LLM’s OpenCL Backend on Android: Performance Insights

Step-by-step: add EventTraceRecorder traces to MLC-LLM, use TVMSynchronize to bracket GPU work, and capture OpenCL kernel timings in TVM.

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On-Device Text To Speech on Apple Devices with AI SDK

On-device speech synthesis is now available in the AI SDK for React Native. Powered by Apple’s AVSpeechSynthesizer, it delivers private, low-latency text-to-speech with rich voice options and offline support.

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On-Device Speech Transcription in React Native with Apple SpeechAnalyzer

Add speech-to-text features to your React Native app using Apple’s SpeechAnalyzer and SpeechTranscriber APIs in iOS 26. Runs entirely on-device, with system-managed language models and support for multiple languages.

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On-Device Text Embeddings in React Native With Apple NLP Framework

Use on-device text embeddings in React Native. Our Vercel AI SDK provider leverages Apple's built-in NLP framework, adding powerful AI features to your app with zero extra downloads or increased bundle size.

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Expanding On-Device Apple LLM Capabilities: Introducing Tool Calling

The Apple provider for Vercel AI SDK now supports tool calling, enabling on-device LLMs to execute custom functions in React Native apps. Build faster, more interactive mobile AI experiences.

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On-Device Apple LLM Support Comes to React Native

React Native now supports Apple’s on-device LLM for private, fast, and offline AI experiences. Build with Foundation Models and bring Apple Intelligence features to your mobile app.

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How I Used MCP to Control My Friend's Home

Learn how MCP works with a hands-on project that connects Claude AI to smart home data using a Node.js server.

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Want to Run LLMs on Your Device? Meet MLC

Find out how MLC compiles both model and runtime for efficient local LLM inference, and what that means for running AI on your Android or iOS app.

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Meet react-native-ai: LLMs Running on Mobile, for Real

Run AI models on-device in React Native apps using the new react-native-ai library, powered by MLC and Vercel AI SDK. Learn how it works and why it matters.

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Local LLMs on Mobile Are a Gimmick-For Now

Can local LLMs replace cloud-based AI? We analyze performance, limitations, and the future of on-device AI models in 2025.

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Giving AI The Keys to Your App: Agents Controlling UI State

Learn how to let AI agents control UI state in React using Jotai and Flows-AI, automating logic and workflows for smarter, autonomous applications.

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Flows AI: Your Library for Building AI Workflows on Top of Vercel AI SDK

Discover Flows AI, a lightweight library for building AI workflows with Vercel AI SDK. Simplify agent orchestration and explore flexible, scalable solutions.

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Building AI Agent Workflows With Vercel’s AI SDK: A Practical Guide

Learn to build AI Agent workflows with Vercel's AI SDK. Explore chaining, routing, parallel & evaluator-optimizer patterns.

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Creating a Video Transcription App: Lessons Learned

Read about Callstack's R&D journey into AI for a transcription app, using OpenAI's Whisper for speech recognition. Discover the lessons learned.

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Using AI to Write Tests for React Components

Learn about the benefits and challenges of writing tests for User Interface with AI tools such as GitHub Copilot and ChatGPT.

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Building v0 iOS and Fixing React Native Along the Way

A technical look at building v0 mobile with React Native and Expo, covering iOS-first decisions, native modules, and fixes pushed to React Native core. Featuring Fernando Rojo, Szymon Rybczak, and Oskar Kwaśniewski.

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Building a Custom AI Assistant for Your Business

Learn what it takes to build a custom AI-powered chatbot for your company, including the challenges, solutions, performance, and security considerations.

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Ambient Generative AI: Deploying Latent Diffusion Models on Mobile NPUs

Join Lech Kalinowski at AI Engineer Miami on April 20–21 for a talk on running offline latent diffusion models on mobile NPUs.

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Agent Device, AI workflows, and mobile testing in practice

A discussion on Agent Device, AI-driven workflows, and testing mobile apps using simulators and accessibility data.

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The Safe Detonation Chamber: Building AI You Can Actually Ship

How to design production AI systems using Vercel AI SDK, Workflows, and Sandbox , covering vendor lock‑in, long‑running workflows, and secure code execution.

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React Native Evals: Measuring AI Code Quality in Practice

React Native Evals introduces a data-driven way to measure how AI coding models perform on real React Native development tasks.

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OpenAI Codex Community Meetup - Wrocław

Join Wrocław’s first official OpenAI Codex meetup on March 5, 2026. Meet and connect with developers building with Codex.

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OpenAI Codex Community Meetup - Berlin

Join Berlin’s second official OpenAI Codex meetup on March 3, 2026. Live demos, product updates, and real-world coding workflows.

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Agent Conf

Join 500+ engineers in Warsaw Sept 17-18 2026 for Agent Conf. Learn agentic development, orchestration, and AI-driven workflows.

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Callstack x Vercel AI SDK Meetup

Join the Callstack x Vercel AI SDK Meetup in Wrocław on March 4, 2026. Practical talks on building secure, production-ready AI apps.

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Exploring Skills in Claude: A Live Walkthrough

Live experiments with Claude Skills in a React Native codebase, covering AI agents, Expo upgrades, and practical limits of automation

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The Offline AI: On-Device LLMs in React Native With AI SDK

Learn how to run on-device LLMs in React Native using Vercel’s AI SDK from Michał Pierzchała's talk at DevAI by Data Science Summit.

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How to Run Any LLM On-Device With React Native

In this talk, Szymon will show how to run LLMs directly inside React Native apps using an AI SDK that provides a powerful abstraction layer to simplify building AI applications. Join him as he explores react-native-ai, a library that enables local LLM execution.

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Spec-Driven-Development With Kiro.dev

Adapt React apps for TV with predictable AI. Amazon's Eric Fahsl demos Kiro.dev, a spec-driven assistant that solves complex TV UI challenges like D-pad navigation and focus management.

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AI SDK 5: What’s New and What’s Next

Lars Grammel from Vercel introduces AI SDK 5, a major rewrite to build next-gen AI apps. Learn about its new provider architecture, type-safe UI and agentic loops for modern AI development.

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AI for the Other Parts of Your Technical Job

Stop fitting your workflow into off-the-rack tools. Learn to build your own AI-powered solutions, including a custom slide generator and a collaborative developer notebook.

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React Native AI: Bringing On-Device LLMs With AI SDK

Need offline AI in your mobile app? This talk recording demonstrates how to use the AI SDK to create a custom provider for on-device LLMs in React Native, ensuring privacy and functionality anywhere.

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AI Meetup in Wroclaw with Callstack & Vercel

On Sept 2 in Wrocław, join top speakers from around the world at the AI Meetup. Learn about AI SDK 5, on-device LLMs in React Native, TV-ready apps with Kiro.dev, and how AI supports developers beyond code.

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Run LLMs Locally With React Native & MLC

Watch how MLC brings on-device AI to React Native. See react-native-ai in action and discover what’s next for local model execution.

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Building React Universe Conf App With Replit

Mike and Oskar tried both Repl.it and Bolt.new to code a new conference app, and after burning millions of tokens, they fell back to Cursor.

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Bringing AI to React Native

Leveraging capabilities of local devices to run LLMs via React Native and Vercel AI SDK.

We don't follow best practices, we set them

React Native Core Contributors

Trusted by Meta, Microsoft, and the community

We don't follow best practices, we set them

React Native Core Contributors

Trusted by Meta, Microsoft, and the community

We don't follow best practices, we set them

React Native Core Contributors

Trusted by Meta, Microsoft, and the community

We don't follow best practices, we set them

React Native Core Contributors

Trusted by Meta, Microsoft, and the community

We don't follow best practices, we set them

React Native Core Contributors

Trusted by Meta, Microsoft, and the community

We don't follow best practices, we set them

React Native Core Contributors

Trusted by Meta, Microsoft, and the community

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Integrating AI into your React Native workflow?

We help teams leverage AI to accelerate development and deliver smarter user experiences.

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Valued by

We think they are great developers and we learned a lot from them.

Robin Cussol

Frontend developer

@

Kiwi.com

Having Callstack is a wonderful experience and gives us the ability to move so much faster than we could without them.

TC Davis

Product

@

Expo

They took our team from 'zero to hero' in React Native

Nguyễn Kỳ Thanh

Chief Marketing Officer

@

OneHousing

Despite the geographical distance, our collaboration has been successful with strong deliveries on time.

Martin Rolinski

CEO

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