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OpenAI Opens DevDay 2026 in San Francisco With Livestreamed Altman Keynote

September 29, 2026 at 12:47 EDT

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OpenAI is opening DevDay 2026 in San Francisco on Tuesday with a livestreamed 10:00 a.m. PT keynote by Sam Altman, positioning the gathering as its biggest DevDay yet. The developer event is centered on APIs, tools, demos and direct access to OpenAI teams, with in-person applications already closed and online viewing open to the public.

Sep 29, 2026 · OpenAI

DevDay opens for builders

OpenAI's San Francisco developer conference begins with a livestreamed Sam Altman keynote, technical sessions and a wider DevDay Exchange roadshow.

10:00 a.m. PT

Keynote start

$650

Invited registration

Exchange cities

6B/min

2025 API scale

From one flagship to eight Exchange cities

The 2026 program keeps the San Francisco event and adds a follow-on roadshow for developers.

San Francisco event

Exchange cities

The day moves from broadcast to building

OPEN

Keynote

→

BUILD

Breakouts and workshops

→

AFTER

Recorded sessions

Practical upside

The livestream and later recordings extend access beyond Fort Mason, while the agenda is built around technical sessions, demos and workshops.

Open questions

The itemized launch list was not public before the keynote, and in-person access is closed with no same-day tickets.

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