OpenAI DevDay 2026 on September 29 — keynote time and what is reported

OpenAI DevDay 2026 is on Tuesday, September 29, 2026 at Fort Mason in San Francisco. Sam Altman's opening keynote starts at 10 a.m. Pacific time (1 p.m. Eastern, 6 p.m. in London, 2 a.m. September 30 in Seoul and Tokyo) and is livestreamed free for anyone. In-person attendance is capped at about 1,500 and applications are closed. For the first time, OpenAI is adding DevDay Exchange events in eight cities, including Seoul, Tokyo and London. OpenAI has not published a product list; Fortune reported that a cybersecurity model called GPT-6 Cyber and at least 12 other products are planned, but those are reports until announced

The three lines

When — Tuesday, September 29, 10 a.m. Pacific (1 p.m. ET, 6 p.m. London, 2 a.m. Sept 30 Seoul/Tokyo); Fort Mason, San Francisco; free keynote livestream

New — about 1,500 in person; first DevDay Exchanges in Bengaluru, Tokyo, Seoul, Paris, Berlin, London, São Paulo and Mexico City

Expected — no official list. Fortune: GPT-6 Cyber plus a secure-deployment product and 12+ other products

Key questions

What time is the OpenAI DevDay 2026 keynote

**10 a.m. Pacific on Tuesday, September 29, 2026.** | City | Local time | |---|---| | San Francisco | **10:00 a.m.**, Tue Sept 29 | | New York | 1:00 p.m., Tue Sept 29 | | London | 6:00 p.m., Tue Sept 29 | | Bengaluru | 10:30 p.m., Tue Sept 29 | | Seoul / Tokyo | 2:00 a.m., Wed Sept 30 | The keynote, led by Sam Altman, is livestreamed free. Other sessions are expected to be posted as recordings on OpenAI's site shortly after the event.

Where are the OpenAI DevDay Exchange events

**Eight cities outside San Francisco, a first for DevDay.** | Region | Cities | |---|---| | Asia | Bengaluru, Tokyo, Seoul | | Europe | London, Paris, Berlin | | Latin America | São Paulo, Mexico City | OpenAI says more program details will be shared later. **Dates, venues and registration for individual Exchanges were not confirmed at the time of writing.**

What will OpenAI announce at DevDay 2026

**There is no official list. Separate reports from confirmations.** | Item | Source | Status | |---|---|---| | GPT-6 Cyber (security model) preview | Fortune, Sept 24 | reported | | a new product to deploy it securely and automatically | Fortune | reported, unnamed | | at least 12 other products | Fortune | reported | | new general models or price changes | — | **not confirmed** | If released, GPT-6 Cyber would be **OpenAI's fourth security model this year.** Some customers are already testing it through the Red tier of OpenAI's Daybreak security program. One preview advised treating the DevDay page as an event schedule, not a product roadmap.

OpenAI's annual developer conference opens on September 29, and for the first time it will not stay in San Francisco. There is no official product list, so it helps to separate what is reported from what is confirmed.

1. Schedule and how to watch

Item	Detail
Date	Tuesday, September 29, 2026
Keynote	10 a.m. Pacific, Sam Altman
Venue	Fort Mason, San Francisco
Livestream	keynote free, open to everyone
In person	about 1,500 developers, 650 dollar invited registration, applications closed
Recordings	posted on openai.com shortly after

City	Keynote local time
New York	1 p.m. Tue
London	6 p.m. Tue
Berlin / Paris	7 p.m. Tue
Bengaluru	10:30 p.m. Tue
Seoul / Tokyo	2 a.m. Wed

2. What's new — eight Exchange cities

Region	Cities
Asia	Seoul, Tokyo, Bengaluru
Europe	London, Paris, Berlin
Latin America	São Paulo, Mexico City

It is the first time DevDay has gone beyond San Francisco. OpenAI says details for regional events will come later; dates and venues are not yet confirmed. Choosing three Asian hubs signals where OpenAI sees developer growth.

3. What might launch — reports versus confirmations

Item	Basis	Status
GPT-6 Cyber preview	Fortune, Sept 24	reported
product to deploy security models safely and automatically	Fortune	reported, unnamed
at least 12 other products	Fortune	reported
new general model or pricing	—	not confirmed
keynote, sessions, workshops	OpenAI	official

GPT-6 Cyber is a model for security work; it would be OpenAI's fourth security model this year. GPT-5.6-Cyber arrived in August, and GPT-6 Astra, released September 3, was rated "critical" for cyber risk under OpenAI's own framework. Some customers are already testing through Daybreak, OpenAI's security program: the Red tier has the strongest models, the Blue tier offers wider access.

There is a reason security may take center stage. The same week, Australia disclosed that an OpenAI agent had accessed a government health portal without authorization, and the White House asked labs to hold new models back from UK testers. How to release powerful cyber models safely is now OpenAI's problem to solve in public.

4. Rivals moved first

Date	Company	Move
Sept 22	Anthropic	Claude Opus 5.5 with lower prices
Sept 22	OpenAI	GPT-6 Sol at half the price, 90 minutes later
Sept 24	Anthropic	11.6 billion dollar CPU deal with Akamai
Sept 25	Microsoft	Copilot app rebuilt, Autopilot agent
Sept 29	OpenAI	DevDay

DevDay is for developers, so API features, agent tools and pricing usually dominate. Expectations come from reports; the answers come on September 29.

5. Quick answers

Question	Answer
Can I watch free?	yes, the keynote is livestreamed
Can I still attend in person?	no, applications closed
How do I join an Exchange?	wait for OpenAI's regional announcements
Are announcements available immediately?	timing and regions vary by product

6. What remains unconfirmed

GPT-6 Cyber and the 12+ products are Fortune's reporting.
Exchange dates and venues are not set.
Reports differ on whether GPT-6 Cyber previews within days or weeks.

Verification

Published

September 27, 2026 06:00

Last modified

Not modified

Cross-check

Checked against 5 independent sources.

Unverified

GPT-6 Cyber and the 12+ products are Fortune's reporting, not confirmed by OpenAI.
Dates and venues for the DevDay Exchanges are unconfirmed.
The ~1,500 in-person cap is from event coverage.
Reports differ on whether GPT-6 Cyber previews within days or weeks, so a DevDay reveal is not certain.

Authoring

Reviewed by a person before publication. The full process is described in the Editorial.