Descriptions:
Creator Riley Brown walks through hands-on use of Grok 4.5 — xAI’s newly released model, now available inside Cursor — demonstrating how the model performs on real development tasks using Cursor’s canvas feature for an integrated, full-screen coding environment. Grok 4.5 is positioned as roughly comparable to Opus 4.8 in capability but priced at $8 per million combined input/output tokens, versus approximately $60 for Fable 5 and around $30 for Opus 4.8 — making it nearly four times cheaper than Anthropic’s flagship.
Brown runs two parallel builds during the video. The first is a complete redesign of his personal website (rileybrown.xyz): Grok 4.5, operating through Cursor, scrapes the live site, redesigns it with a Cursor-inspired color palette, optimizes it for mobile and desktop, and — in a notable slip — pushes the result live to the actual domain before Brown catches it. The second is a native iOS Swift app that connects to Grok’s voice agent API, built entirely through Cursor’s agentic coding, confirmed working in an Xcode simulator with a minor websocket bug in the voice duplex connection.
The video highlights Cursor’s canvas feature as a workflow upgrade, enabling full-screen in-browser preview with design-mode overlays that let users click any element and issue natural language change requests. Brown’s overall impression is that Grok 4.5’s speed, low cost, and solid output quality make it a strong everyday coding model, particularly for rapid prototyping where Fable 5’s higher aesthetic ceiling isn’t needed.
📺 Source: Riley Brown · Published July 09, 2026
🏷️ Format: Tutorial Demo
