OpenAI DevDay 2026: Keynote Time, Schedule, How to Watch

It's here: OpenAI DevDay 2026 takes place today — Tuesday, September 29, 2026 — at Fort Mason in San Francisco, and if you're reading this before 10 a.m. Pacific, the opening keynote hasn't started yet. Sam Altman headlines it, the keynote streams free for everyone, and the sessions that follow are the first real look at what OpenAI's developer platform looks like after a September in which it already shipped GPT-6 Sol and Luna.

This is our DevDay 2026 live-along page: the confirmed schedule with time-zone conversions, how to watch the keynote stream, what's realistically on the table to be announced, and straight answers to the questions people are searching this morning. We'll refresh the announcement notes after the keynote wraps — check back in the evening (Pacific) for the confirmed list.

Quick answer

• What: OpenAI DevDay 2026 — technical sessions, hands-on demos, and workshops at Fort Mason, San Francisco.
• When: Tuesday, September 29, 2026. Doors/breakfast 8:00 a.m. PT, opening keynote 10:00 a.m. PT, programming until the closing session at 4:00 p.m., reception to 7:00 p.m.
• Keynote time in your zone: 10 a.m. PT = 1 p.m. ET = 5 p.m. UTC = 6 p.m. London = 7 p.m. Berlin = 10:30 p.m. Delhi = 1:30 a.m. (Sep 30) Tokyo = 1:30 a.m. (Sep 30) Beijing.
• How to watch: the opening keynote is livestreamed free — sign up on OpenAI's DevDay page for a reminder. Other sessions are recorded and posted on openai.com shortly after the event.
• Tickets: sold out months ago ($650, applications closed July 10). There are no day-of tickets.
• What to expect: a wider release of GPT-6 Astra is the community's top expectation, alongside evaluation tooling; open-weight and "managed agents" rumors are covered below with what's actually confirmed so far.

OpenAI DevDay 2026 schedule (all times Pacific)

OpenAI's DevDay page lists the day like this:

Convert the 10:00 a.m. keynote to your own clock: 1:00 p.m. Eastern (EDT), 5:00 p.m. UTC, 6:00 p.m. London (BST), 7:00 p.m. Paris/Berlin (CEST), 10:30 p.m. India (IST), 1:30 a.m. September 30 in Tokyo (JST), and 1:30 a.m. September 30 in Beijing/Singapore (UTC+8). The breakout block runs through mid-afternoon Pacific, so even west-coast attendees get a full day; everyone east of Europe is into the night.

OpenAI has also been running DevDay Exchanges — smaller, regional one-day events — with stops announced for Bengaluru, Tokyo, Seoul, Paris, Berlin, London, São Paulo, and Mexico City later this year. If San Francisco wasn't an option, one of those is the practical way to attend in person.

How to watch the DevDay 2026 keynote live

The opening keynote is free to watch. OpenAI streams it and lets anyone sign up for a reminder on the DevDay page — no ticket, no application, no paywall. Two practical notes from past years that still apply:

1. The stream is the only same-day source. There is no day-of ticket sales, and in-person capacity went to people who applied months ago. If a "watch party" link slides into your feed this morning, treat it as a scam — the official stream is the one OpenAI links from its own page.
2. Everything else lands as recordings. OpenAI posts the breakout sessions on openai.com shortly after the event, so the parallel-track talks you have to miss while asleep (that's most of Asia and Europe for a 10 a.m. Pacific keynote) are recoverable the same day.

If you're following along in text instead of video, expect the usual ecosystem live blogs and live-update threads from developer media to spin up an hour or so before the keynote. We'll keep this page's announcement list current as the keynote lands, and we'll link OpenAI's own recap once the sessions are posted.

What to expect: Astra, evaluation tooling, and the rumor ledger

Nothing below is confirmed until the keynote says it — but the pre-DevDay reporting gives a fairly clear shape of the day.

GPT-6 Astra is the main event to watch for. The expectation, reported by AI newsletters and echoed across the ecosystem, is a broader release of Astra — OpenAI's frontier model that has so far been constrained by capacity — possibly paired with a fuller evaluation suite so teams can actually benchmark what they're buying. The supporting evidence is circumstantial but loud: ChatGPT Pro paused new subscriptions in mid-September, citing demand pressure tied to Astra-class workloads. A wider Astra at DevDay would be the natural release valve.

The open-weight question has partly answered itself. A recurring pre-event prediction was an open-weight announcement — but OpenAI already released open-weight models under Apache 2.0 in the run-up to DevDay, which either takes the topic off the keynote slate or means the San Francisco stage gets the "and here's what's next" portion. Watch for commitments about the cadence, not the existence, of open releases.

"Managed agents" is still a rumor. Reporting in late September described OpenAI preparing hosted, always-on agents with custom environments — a product some outlets label "managed agents" — but OpenAI has not announced anything by that name, and our own autocomplete checks show essentially zero search traction for a "DevDay managed agents" reveal. (Fun fact that will confuse your reading today: AWS Bedrock already uses the phrase "managed agents" for its OpenAI-model hosting.) If hosted-agent infrastructure shows up in the keynote, we'll update this section with the real product name and what it does.

What's already shipped, so it can't be the headline: GPT-6 Sol and Luna went live September 22 in ChatGPT Work and Codex (free and Go users get Luna), and Codex CLI hit 0.158.0 on September 28 with a fullscreen TUI overhaul, MCP OAuth pre-registration, and sandbox fixes. If you want the model landscape as it stood before the keynote, our GPT-6 Astra guide and Codex CLI tutorial cover both, and the Codex model picker guide shows how to switch models when new ones land.

Can you still attend DevDay 2026 in person?

No — and that's not a sales pitch, it's arithmetic. Attendance required an application; applications closed on July 10, 2026; in-person tickets cost $650; the DevDay page explicitly says there are no day-of tickets and tickets are non-transferable. Scholarships existed alongside the application window, and that window has closed too. Your realistic options today: watch the free keynote stream, catch the breakout recordings afterward, or plan for one of the eight DevDay Exchange cities later this year.

FAQ

What time is the OpenAI DevDay 2026 keynote?

10:00 a.m. Pacific Time on Tuesday, September 29, 2026 — Sam Altman's opening keynote, per OpenAI's own schedule page. That's 1 p.m. Eastern, 5 p.m. UTC/London-adjacent (6 p.m. BST), 7 p.m. in Paris and Berlin, 10:30 p.m. in India, and 1:30 a.m. on September 30 for Tokyo and Beijing. Breakfast opens at 8 a.m. PT and the reception ends at 7 p.m. PT.

What is the full DevDay 2026 schedule?

Breakfast at 8:00 a.m. PT, opening keynote at 10:00 a.m., breakouts and programming from 11:15 a.m. to 3:30 p.m. (with lunch at 11:30), closing session at 4:00 p.m., and a reception from 4:45 to 7:00 p.m. — all Pacific Time, all at Fort Mason in San Francisco.

Is OpenAI DevDay free to watch?

The opening keynote livestream is free and open to everyone — you can sign up for a reminder on OpenAI's DevDay page. In-person attendance is the paid, application-only part ($650). Breakout sessions aren't streamed live but are recorded and posted on openai.com shortly after the event.

Can I buy a DevDay 2026 ticket today?

No. Applications closed July 10, 2026, there are no day-of tickets, and tickets are non-transferable. For in-person events, look at the DevDay Exchanges announced for Bengaluru, Tokyo, Seoul, Paris, Berlin, London, São Paulo, and Mexico City.

Where is OpenAI DevDay 2026 held?

Fort Mason in San Francisco. The venue hosts the keynote, the breakout programming, and the evening reception.

Will OpenAI announce managed agents at DevDay?

Not confirmed. Late-September reporting described hosted, always-on agents with custom environments in the works, but OpenAI hasn't announced a product by that name, and there's no meaningful search or official signal for a "managed agents" keynote reveal. If the keynote introduces hosted-agent infrastructure, this page will be updated with the actual name and capabilities.

What will OpenAI announce at DevDay 2026?

The strongest pre-event expectation is a wider GPT-6 Astra release, possibly with expanded evaluation tooling. Open-weight releases have already partially landed before the event, and GPT-6 Sol/Luna shipped September 22 — so the keynote's news is most likely about availability and scale (who gets Astra, at what price, with what tooling) rather than brand-new model families. Treat everything short of the keynote itself as expectation, not fact.