OpenAI's Developer State of the Union details the company's journey and unveils significant updates, including the powerful GPT-5 model, the new Codex SDK for agentic coding, the comprehensive Agent Kit for building complex agents, and the Apps SDK for integrating interactive applications directly into ChatGPT.
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.
Co-founder David shares Recall.ai's journey from a YC hackathon project to the essential data infrastructure for over 1,000 AI companies. He covers their strategic pivot to an API, the fundraising grind, and the lessons learned in building a lean, high-agency team that powers the future of AI with conversation data.
OpenAI introduces GPT-5, a significant upgrade focused on expert-level reasoning, agentic capabilities, and real-world utility, particularly for developers and enterprises. The model introduces a new reasoning paradigm, "software on demand" capabilities, and state-of-the-art performance on coding, reasoning, and long-context benchmarks. The launch also includes major updates to the ChatGPT application and a powerful new API for developers.
Sagar Batchu, CEO of Speakeasy, discusses the pivotal shift in API development as AI agents become primary consumers. The conversation covers the rise of the Model Context Protocol (MCP), the challenges in building agent-ready APIs, and how Speakeasy provides a toolchain for creating, managing, and securing MCP servers.