Overview
- OpenAI announced App SDK in preview to let developers create full app experiences inside ChatGPT, with app submissions for review opening later this year.
- Live demos showed “talking to apps” and full‑screen experiences, including Coursera video playback, Canva design creation, and Zillow property search controlled by natural language.
- New developer tools—AgentKit, ChatKit, and Codex—were introduced to enable agent workflows, chat interfaces, and coding support during the keynote.
- OpenAI agreed to deploy 6 gigawatts of AMD Instinct GPUs over several years, and AMD issued OpenAI a warrant for up to 160 million shares tied to deployment and share‑price milestones.
- DevDay 2025 hosted 1,500+ attendees at Fort Mason, with only the opening keynote livestreamed and the Altman–Ive closing chat held exclusively in person.