This Day in AI Podcast What did OpenAI Announce at DevDay? Apps SDK, MCP UI & Impact to SaaS - EP99.20-APPS
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Oct 10, 2025 OpenAI's DevDay announcements take center stage, featuring the new Apps SDK and dynamic UI aspects. Hosts debate whether ChatGPT could redefine traditional SaaS UIs. They discuss early experiences with integrated apps like Canva and Spotify, weighing usability and functionality. The conversation also dives into challenges of context loss in app-centric workflows and the potential downsides of tool stability. As they explore GPT-5 Pro's pricing and voice integration hurdles, the excitement for future developments like Gemini 2.5 adds an intriguing layer.
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Return UI As Resource References
- Return UI components as resource references so the host app can render them automatically.
- Build MCPs around input/output resource references to ensure cross-app compatibility.
Single-App Focus Limits Research Workflows
- The apps SDK focuses a single MCP at a time which removes parallel tool-calling benefits used for research and complex workflows.
- That design choice reduces agentic, multi-source research capabilities developers expected.
ChatGPT As A New App Platform
- Treating ChatGPT as a central OS could make many standalone apps redundant, since agents can generate UI and functionality on demand.
- This trend risks 'sherlocking' existing SaaS by embedding or cloning top features into the assistant.