OpenAI sets DevDay 2025 for October 6 in San Francisco

Remember the first OpenAI DevDay, when Sam Altman dropped GPT-4 Turbo and instantly wiped out half the AI wrapper startups overnight? The company's biggest stage is officially coming back.

OpenAI just announced that its third annual DevDay will take place on October 6, 2025, at Fort Mason in San Francisco.

1,500 seats and a $650 ticket

This year’s event is set to be OpenAI’s largest yet, bringing together more than 1,500 developers.

The speaker lineup features CEO Sam Altman and President Greg Brockman, alongside key members from OpenAI’s research, product, and engineering teams.

Attending in person won't be as simple as just buying a pass. Applications opened on July 23 and will run through July 30. OpenAI plans to notify accepted applicants by mid-August, giving them a one-week window to officially register. Tickets are priced at $650.

For everyone else, the opening keynote will be livestreamed on openai.com, and recordings of all subsequent breakout sessions will be published after the event.

Why it matters

DevDay has quickly become the AI world’s version of Apple’s WWDC, setting the technical agenda for the months ahead.

For builders, knowing what OpenAI plans to bake into its core platform is both an opportunity and a survival check. While $650 plus travel to San Francisco is a real commitment, getting face time with the researchers and engineers shaping frontier models can be invaluable for founders building at the cutting edge. That said, for most independent developers, tuning into the free livestream will give you everything you need without the hefty price tag.

For the broader industry, every DevDay keynote redraws competitive lines. When OpenAI ships new native features, entire product categories can disappear in an instant.

We think keeping the crowd capped at 1,500 developers is a smart move. Instead of expanding into a massive, diluted convention, OpenAI is preserving an exclusive, high-signal environment for its most committed builders while using the global broadcast to control the narrative worldwide.