OpenAI DevDay 2025: Opening Keynote with Sam Altman

Quick Overview

OpenAI announced the general availability (GA) of GPT-5 Pro and Sora 2 in the API, alongside the launch of AgentKit, a new platform for building and deploying AI agents that integrate tools and data, demonstrated by building an agent that controls a Sony camera and another that generates marketing materials using Canva and searches real estate listings via Zillow.

Key Points: GPT-5 Pro is now generally available (GA) in the OpenAI API, delivering higher intelligence, improved instruction following, and a better experience compared to previous models. Sora 2 is now available in the API, allowing users to generate high-quality, realistic videos with synchronized audio, supporting custom video length, aspect ratio, and remixing capabilities. AgentKit was launched as a new platform for building and deploying AI agents with a visual workflow builder, supporting tools, guardrails, and data connectors. A demonstration showed building an agent workflow that uses a file search tool to understand documentation and another agent to interact with the Hubspot API. Codex is now powered by GPT-5 Codex, resulting in a 50% faster code review process and enabling developers to build complex software and agents more easily. The presentation included a live demo where an agent successfully used the Zillow tool to find 3-bedroom homes with yards in Pittsburgh. The new GPT-5 Pro model is significantly more capable, enabling complex tasks like generating high-quality marketing assets via Canva and controlling hardware via a specialized SDK.

Context: The video captures the opening keynote of OpenAI DevDay 2025, hosted by CEO Sam Altman and featuring developer experience lead Romain Huet and platform experience lead Christina Huang. The event focused on major product announcements centered around enhancing developer capabilities with AI, including significant updates to GPT-5, the release of Sora 2 in the API, and the introduction of AgentKit and Codex SDK enhancements.

Detailed Analysis