Keynotesby GlyphOpenAI DevDay
OpenAI · 8 keynotes · 2026, 2025, 2023 · mostly Agents and Models · 12 announcements
Year by year
The top highlight of each keynote20265
Stop Overpaying for IntelligenceA keynote video from the official OpenAI channel.
Stack Overflow: From Idea to ProductA keynote video from the official OpenAI channel.
Higgsfield: Building Agents That Provision Their Own ComputeA keynote video from the official OpenAI channel.
The dots demo, take twoA keynote video from the official OpenAI channel.
Keynote (FULL)A keynote video from the official OpenAI channel.
20252
Developer state of the unionA 54-minute keynote video from the official OpenAI channel.
Opening Keynote with Sam AltmanDevDay 2025 was held October 6, 2025 at Fort Mason in San Francisco.Sam Altman5 announced53m
20231
Opening keynoteGPT-4 Turbo supports up to 128,000 tokens of context, 16 times GPT-4's 8K, with knowledge updated to April 2023Sam Altman7 announced46m
Announcements
Apps SDKOpen standard, built on MCP, for building apps inside ChatGPT
Apps in ChatGPTFirst-party apps from Booking.com, Canva, Coursera, Figma, Expedia, Spotify, Zillow
AgentKitAgent Builder, Connector Registry and ChatKit for building agents
CodexGeneral availability with Slack integration and Codex SDK
Codex SDKEmbed the Codex CLI agent into custom workflows, TypeScript first
GPT-4 Turbo128K context, lower price, April 2023 knowledge
Price cut for GPT-4 Turbo3x cheaper prompt tokens than GPT-4
Copyright ShieldOpenAI defends customers against copyright claims
Whisper v3Open-source speech recognition model
Custom Models programOpenAI researchers train custom GPT-4 for companies
GPTsCustom ChatGPT versions, GPT Store later in November
Assistants APIThreads, retrieval, Code Interpreter, function calling