Summary
Riley Brown’s weekly update on the world of AI agents covers a busy stretch of releases, drawing on about $3,000 in tokens spent testing the new models in his own business.
The first section compares Anthropic’s Claude Opus 5.5 with OpenAI’s new GPT-6 Soul and GPT-6 Luna, which launched about two hours apart. Brown argues Opus 5.5 stands out for more natural, concise writing that leads with the most important point, for generating animated videos entirely from a single JavaScript file, and for front-end design and visual artifacts. He also demonstrates the new Claude Projects feature with Claude Design integration, and contrasts this round with the earlier release of Fable 5.1 and GPT-6 Astra.
The video then shows OpenAI’s realtime voice model using tools live, editing a document by voice while the user talks over its tool calls, adding a table and converting callouts into tabs.
The final segment covers Meta’s Muse, a personal agent app that has passed ChatGPT as the top download on the App Store. Muse can handle email, use Notion and a browser, access a computer, and act proactively. Brown credits its speed, powered by Muse Spark 1.3, and compares it with Grokbot, which sits far lower in the rankings.
📺 Source: Riley Brown · Published September 25, 2026
🏷️ Format: News Analysis
