OpenAI DevDay 2026

What this countdown tracks

The timer above runs to OpenAI DevDay 2026, expected on Tuesday, October 6 at 10:00 PT at Fort Mason in San Francisco, where new frontier models, agent platforms, and API expansions are forecast to debut.

About this event

OpenAI DevDay is the company's annual developer conference and the venue at which OpenAI typically introduces flagship API releases, new model availability, and platform-level capabilities. After a single-track 2023 debut, the format has expanded each year and now runs as a multi-track in-person event in San Francisco with parallel "regional" follow-up events in London, Singapore, and other cities. The keynote is fronted by OpenAI's CEO Sam Altman with platform leadership presenting product launches.

DevDay's audience includes startups building on the OpenAI API, enterprise AI teams, indie developers, and the broader machine-learning research community. Sessions cover API capabilities, fine-tuning and customisation, evals, agentic frameworks, multimodal tooling, and deployment guidance. Hands-on labs and one-on-one office hours with OpenAI engineers are typically available to in-person attendees.

What to expect

The 2026 edition is widely expected to introduce a successor to the GPT-5 family, possibly branded GPT-6, alongside updates to OpenAI's agent platform and Apps SDK. Persistent reporting points to AgentKit improvements, Codex updates, expansions to the Realtime API including voice and video modalities, and continued evolution of Sora video generation. Pricing changes and new model tiers are common DevDay announcements. Expect deeper integration with the consumer ChatGPT product, expanded Apps in ChatGPT marketplace capabilities, and updates targeting enterprise procurement.

Past reveals

• DevDay 2025 launched Apps in ChatGPT, AgentKit, Codex GA, GPT-5 Pro API, gpt-realtime-mini, and Sora 2 in the API.
• DevDay 2024 introduced the Realtime API, Prompt Caching, Model Distillation, Vision fine-tuning, and the o1 reasoning model preview.
• DevDay 2023, the inaugural edition, unveiled GPT-4 Turbo with 128K context, the Assistants API, custom GPTs, and the GPT Store.
• 2025's regional DevDays in London and Singapore mirrored the SF format with localised sessions.
• 2024 introduced multi-city DevDay events for the first time.

How to watch

The keynote is expected to stream free on openai.com/devday and OpenAI's YouTube channel. A 10:00 PT start equates to 13:00 ET, 18:00 BST, 19:00 CEST, 22:30 IST, and 02:00 JST on October 7. The opening keynote typically runs roughly 90 minutes, followed by breakout sessions and labs across the day. Session recordings publish to OpenAI's YouTube channel within days, and the developer documentation is updated to reflect the new APIs in real time.

Related keynotes to track

DevDay sits between Meta Connect 2026 in mid-September and AWS re:Invent 2026 in early December, in a packed AI keynote calendar. Anthropic's competing developer event runs as Code with Claude SF 2026 earlier in May.

FAQ

When is OpenAI DevDay 2026? Expected Tuesday, October 6, 2026 at 10:00 PT. Where is OpenAI DevDay 2026? Fort Mason in San Francisco, California. How can I watch OpenAI DevDay 2026? Free on openai.com/devday and OpenAI's YouTube channel. What's expected to be announced? A next-generation frontier model, AgentKit and Codex updates, Apps SDK expansions, and pricing and API capability updates.