# OpenAI DevDay 2025: Opening Keynote with Sam Altman Source: https://www.youtube.com/watch?v=hS1YqcewH0c Recap page: https://rapidrecap.app/video/hS1YqcewH0c Generated: 2025-10-06T19:03:52.856+00:00 --- ## 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. ![Screenshot at 46:06: Sam Altman returns to the stage as the slide transitions to show logos of partner companies \(Booking.com, Canva, Coursera, Expedia, Figma, Spotify, Zillow, etc.\) integrating with OpenAI, setting up the section on Agents and Connectors.](https://ss.rapidrecap.app/screens/hS1YqcewH0c/00-46-06.png) **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 The OpenAI DevDay 2025 keynote began with Sam Altman summarizing the massive growth in 2023, noting 2M weekly developers, 100M weekly ChatGPT users, and 300M tokens per minute on the API. He emphasized that AI has moved beyond simple question-answering to systems that 'do things for you,' referring to Agents. He then announced the general availability (GA) of GPT-5 Pro in the API, highlighting its higher intelligence, improved instruction following, and better experience compared to GPT-4. He noted that GPT-5 Pro is already dramatically improving developer productivity, with OpenAI engineers completing 70% more pull requests each week using Codex, which is now powered by GPT-5 Codex. Following this, Romain Huet introduced AgentKit, a visual workflow builder for creating agents, demonstrating its use by building an agent to control a Sony camera via a custom SDK and another agent to search Zillow listings based on conversation context. Christina Huang then took the stage to showcase ChatKit, a UI component for embedding chat experiences directly into applications, demonstrated by creating a custom onboarding widget for the DevDay schedule. She also highlighted Evals for testing agent performance and introduced the Agent Builder workflow for creating and testing agents visually. Finally, Sam Altman returned to announce the general availability of Sora 2 in the API, noting it offers video length control, aspect ratio/resolution control, and remixing capabilities. He concluded by showing an example of Sora 2 generating a video based on a prompt, and mentioned that GPT-5 Pro and Sora 2 are available today. ### Opening Remarks & Growth Metrics - Sam Altman welcomed the audience and presented 2023 growth stats (2M developers, 100M ChatGPT users, 300M tokens/min on API) - Announced GPT-5 Pro in API GA, featuring higher intelligence and improved instruction following. ### Agents & App Platform - Introduced AgentKit, a visual workflow builder for creating agents using tools and connectors - Demonstrated AgentKit building a workflow involving categorization and using a File Search tool. ### Developer Tools Updates - Announced Codex is now powered by GPT-5 Codex, leading to 70% faster code review - Showcased Codex integration across IDEs, Terminals, GitHub, and Cloud. ### App Development & Widgets - Christina Huang demonstrated ChatKit, a UI component for embedding chats directly into apps, using a custom onboarding widget example for DevDay schedules. ### Agent Capabilities & Evals - Demonstrated agents using external tools (Zillow, Canva) and guardrails for safety/relevance - Introduced Evals for rigorous testing of agent performance. ### Sora 2 Announcement - Sora 2 is now available in the API, supporting custom video length, aspect ratio/resolution, and remixing videos, with output quality comparable to the advanced model. ### Conclusion - Sam Altman emphasized the future lies in abundant software created via simple ideas using these new tools. ![Screenshot at 00:21: The large audience gathering in the industrial-style venue for the OpenAI DevDay 2025 keynote.](https://ss.rapidrecap.app/screens/hS1YqcewH0c/00-00-21.png) ![Screenshot at 00:35: Sam Altman beginning his keynote, with the screen displaying his title: "Sam Altman, Chief Executive Officer, OpenAI".](https://ss.rapidrecap.app/screens/hS1YqcewH0c/00-00-35.png) ![Screenshot at 00:50: Slide summarizing 2023 adoption metrics: 2M developers, 100M weekly ChatGPT users, and 300M tokens per minute on the API.](https://ss.rapidrecap.app/screens/hS1YqcewH0c/00-00-50.png) ![Screenshot at 01:04: Slide displaying 2025 projections: 4M developers, 800M+ weekly ChatGPT users, and 6B tokens per minute on the API.](https://ss.rapidrecap.app/screens/hS1YqcewH0c/00-01-04.png) ![Screenshot at 02:08: The screen updates to the agenda: "How we're making it \[easier to build with AI\]" covering Apps inside ChatGPT, Building agents, Writing \[code\], and API updates.](https://ss.rapidrecap.app/screens/hS1YqcewH0c/00-02-08.png) ![Screenshot at 03:50: Romain Huet takes the stage to discuss building apps inside ChatGPT, showing the AgentKit workflow interface.](https://ss.rapidrecap.app/screens/hS1YqcewH0c/00-03-50.png) ![Screenshot at 04:51: Demonstration of an agent using the Figma tool to generate a poster based on a prompt, showing the visual output.](https://ss.rapidrecap.app/screens/hS1YqcewH0c/00-04-51.png) ![Screenshot at 06:23: Demonstration of an agent using the Coursera tool to find and present information about a machine learning course within the ChatGPT interface.](https://ss.rapidrecap.app/screens/hS1YqcewH0c/00-06-23.png) ![Screenshot at 09:57: Romain Huet shows the list of names scrolling in the live demo window, demonstrating the agent's ability to process context.](https://ss.rapidrecap.app/screens/hS1YqcewH0c/00-09-57.png) ![Screenshot at 11:16: A split-screen view showing the agent workflow on the left and a live demo of the agent interacting with the Zillow app on the right, displaying property listings on a map of Pittsburgh, PA \(where the dog-walking business idea was focused\). This demonstrates the agent's ability to use external tools contextually to provide rich, interactive results within the chat interface.](https://ss.rapidrecap.app/screens/hS1YqcewH0c/00-11-16.png)