OpenAI sets DevDay for Oct 6, tickets hit $650

OpenAI just dropped the dates for its third annual DevDay, and it’s shaping up to be the biggest one yet. Mark your calendars: October 6, 2025, at Fort Mason in San Francisco. The company is capping in-person attendance at over 1,500 developers, which, frankly, will fill up fast given the price point. Tickets cost $650 — a notable jump from the free virtual-first events we saw in previous years, signaling a return to high-touch, in-person exclusivity. Registration requests open today and close July 30, with confirmations rolling out by mid-August. If you get the nod, you’ll have just one week to pay up and secure your spot.

Sam Altman and Greg Brockman are headlining the speaker list, with more names promised. The agenda is classic DevDay: a keynote giving an early peek at what’s coming down the pipeline, plus deep-dive sessions run by the research, product, and engineering teams. It’s a direct line to the people building the models, which is precisely what makes this event valuable beyond the networking. You’re not just hearing polished marketing — you’re getting the real technical roadmap that will define the next wave of AI startups.

OpenAI has leaned hard into the developer angle from day one, often reminding the world that its mission to build AGI that “benefits all of humanity” runs directly through the people building on its APIs. That framing is front and center again. The company wants to “celebrate and build upon” the work of startups and researchers who’ve already shipped first-of-their-kind products. It’s a smart move — keeping the grassroots developer ecosystem energized is crucial as competition from Anthropic, Google, and the open-source crowd intensifies.

For the thousands who won’t squeeze into Fort Mason, OpenAI is doing the split-format thing again: the keynote gets livestreamed on openai.com, and all breakout sessions will be recorded and published afterward. So the information won’t be locked behind a paywall, just the hallway conversations and the energy of being in the room. Given how fast the API landscape moves right now — new modalities, reasoning models, agentic frameworks — expect the announcements here to set the technical agenda for the rest of 2025.