From the Runtype team
Product updates, engineering insights, and best practices for building AI products.
Stop Researching Prospects Manually. Build an Agent That Does It in 30 Seconds.
Cold email response rates collapse when you're generic. We built a Runtype agent that searches the web with Exa, finds real personalization hooks, and drafts an email in 30 seconds. Here's how it works.
Diffusion LLMs & performance: what happens when the model is no longer the bottleneck?
Mercury 2 is an early signal of what changes when model latency drops fast: the bottleneck moves, and suddenly the rest of your stack matters.
Context Windows Don't Tell The Whole Story: What Product Builders Need to Know
Frontier models advertise million-token context windows, but performance degrades well before you hit the limit. Here's what actually works — and how to build AI products that stay sharp.
Ship an AI Chat Agent in Minutes, Not Months
Persona is an open-source chat widget that drops into any site with one script tag. No framework lock-in, no months of infrastructure work.
Your AI Agent Can See What Your Users See
Persona supports local tool calling, letting your AI agent read the DOM, call browser APIs, and interact with what's on screen. No server round-trips required.
Extend Persona Beyond Chat With Hooks
Persona has 13 render hooks that let you replace the message renderer, input composer, header, or launcher without forking. Build experiences that go far beyond a typical chat UI.
Track Everything Your AI Does: Feedback, Analytics, and Conversations
Persona has built-in feedback collection, conversation logging, and analytics integration. See what's working, what's not, and iterate on your AI product with real data.
Files, Tool Calls, and Thinking: Rich AI Interactions in Persona
Persona handles file uploads, tool call visualization, and reasoning display natively. Build AI features that go beyond plain text responses.
From Script Tag to Production: Deploying AI Chat Into Any Stack
Whether you're embedding into an existing product or building something new, Persona deploys with a script tag, an npm install, or an AI-generated codebase.
Expose Your AI as a REST API in 60 Seconds
Turn any Runtype flow or agent into a production REST API endpoint. Authenticated, documented, streaming-capable, and ready for integration.
Turn Your AI Into a Tool for Cursor, Claude Code, and Windsurf
Runtype's MCP surface lets you expose your flows and agents as tools that AI coding assistants can call directly. Your AI inside their AI.