Stop Shipping Agents With Chat UIs

Chat was a great prototype. It’s a terrible product.

 

In this episode, Yuval sits down with CopilotKit co-founder Atai to unpack why most agentic apps stall at “chat + vibes”, and why the real bottleneck in production AI isn’t models or reasoning. It’s UI.

 

They break down what actually changed in the last year, why agents fundamentally break the request-response paradigm, and how a new generation of protocols is emerging to connect agents to real users. The conversation covers:

• AG-UI, Model Context Protocol (and MCP Apps) and Agent-to-Agent (A2A) Protocols
• The messy (but inevitable) transition from text-only chat to component-rich, voice-enabled, agentic applications.

If you’ve built an agent that works but users still bounce, this episode explains why, and what the new “glue layer” of AI UIs is starting to look like.