Sam Altman's DevDay 2025 keynote introduces major platform updates, including the Apps SDK for building inside ChatGPT, AgentKit for streamlined agent creation, the general availability of the powerful Codex coding agent, and new API access to GPT-5 Pro and Sora 2.
Russ d'Sa, CEO of LiveKit, recounts the company's unexpected journey from a pandemic-era open-source WebRTC project to becoming a crucial infrastructure provider for AI voice interfaces, most notably for OpenAI's ChatGPT. He details the serendipitous moments that led to this pivot and shares his vision for LiveKit as the nervous system for a multimodal AI future.
A discussion on a new report detailing how people use ChatGPT, the global AI adoption trends from Anthropic's Economic Index, the future of AI agent economies, and the practicality of emerging AI wearables like AlterEgo and Meta's smart glasses.
Ethan Smith, CEO of Graphite, explains Answer Engine Optimization (AEO), the new frontier of getting your product featured in answers from LLMs like ChatGPT. He shares his playbook for ranking in these new systems, revealing why AEO traffic can convert 6x better than traditional search and how even early-stage startups can achieve immediate wins by focusing on landing pages, YouTube videos, and authentic Reddit engagement.
Brian Balfour, founder of Reforge, explains the predictable four-step cycle of technology platforms, from open to closed, and argues that ChatGPT is about to enter the "open" phase, creating a massive, time-sensitive distribution opportunity that startups and incumbents alike cannot afford to ignore.
OpenAI's Head of Education, Leah Belsky, and students Yabsera and Alaap discuss how AI, particularly ChatGPT and its new Study Mode, is transforming education. They cover global adoption, the shift from policing AI to integrating it, its role as a personal tutor for building confidence and skills, and the evolving nature of learning, work, and critical thinking in the age of AI.