On Tuesday 29 September, two AI events open in San Francisco on the same day, at opposite ends of the city's waterfront.
At Fort Mason, OpenAI holds DevDay: a single day, $650 to attend, with the opening keynote livestreamed [6]. Down at Pier 48, The AI Conference begins its three-day run with Day Zero, a slate of focused workshops and a live AI Hack Day, ahead of two full conference days that finish on 1 October [5].
It is a scheduling coincidence, and it would be easy to leave it there. But the collision is more useful as a lens than as trivia, because it lands in the middle of a very different calendar that most readers will not have in front of them: the open agent ecosystem's own conference season, which starts in Amsterdam next week and runs until November.
Put the two calendars side by side and they are not really competing for the same attention. They are for different jobs.
What happens on 29 September
OpenAI DevDay is one day at Fort Mason. OpenAI's own page lists what attendees get: a closer look at what OpenAI teams are building, technical sessions on APIs and tools, hands-on demos and workshops, and space to connect with other developers [6]. Tickets are $650, scholarships are available, and the keynote will be streamed [6].
What the page does not contain matters too. There has been a steady run of reporting that OpenAI will use DevDay to launch a hosted agent product. OpenAI's own event page names no product at all [6]. If you are deciding whether to travel, plan on what the organiser has published, not on what the rumour cycle expects.
The AI Conference at Pier 48 is a larger, broader event. It describes an audience of 5,500 builders, researchers and AI leaders, and more than 120 speakers across three days [5]. Day Zero on 29 September is eight 90-minute workshops split between technical and leadership sessions, alongside the hack day [5]. The main days add keynotes and named tracks including AI Frontiers, AI Builders, The AI Stack, Applied AI and AI Strategy, with the AI Builders track focused on agentic and multi-LLM systems [5]. Listed speakers include Peter Norvig, Chris Lattner, Ion Stoica, Illia Polosukhin and Emmanuel Ameisen [5].
So the overlap is real but narrow: DevDay's single day coincides with The AI Conference's workshop day, not its keynotes. Anyone determined to do both can, with a cross-town trip. The more interesting question is why you would pick either one.
The calendar running around it
In April, the Agentic AI Foundation, the Linux Foundation body that now stewards the Model Context Protocol, published its 2026 events programme [4]. It lists ten events across eight countries, beginning with an MCP Dev Summit in New York in April and taking in Bengaluru, Mumbai, Seoul, Shanghai and Tokyo, whose summit runs through today [4].
Four remain this year:
| Event | Dates | City |
|---|---|---|
| AGNTCon + MCPCon Europe | 17 to 18 September | Amsterdam [1] |
| MCP Dev Summit Toronto | 5 to 6 October | Toronto [3] |
| AGNTCon + MCPCon North America | 22 to 23 October | San Jose [2] |
| MCP Dev Summit Nairobi | 19 to 20 November | Nairobi [4] |
The foundation states the reason for the programme plainly: it "reflects growing global demand for open, vendor-neutral infrastructure that enables AI agents to operate reliably and securely across tools, data, and platforms" [4].
Amsterdam is six days away and deserves attention first. AGNTCon + MCPCon Europe runs 17 and 18 September at RAI Amsterdam [1]. Its keynote list reads less like a conference lineup and more like a roster of the people who maintain the protocols. It includes David Soria Parra, the co-creator of MCP; Clare Liguori of AWS and Shaun Smith of Hugging Face, both MCP maintainers; Dominic Farolino of Google, the editor of the WebMCP specification; Dexter Horthy of HumanLayer; Idit Levine of Solo.io; and the foundation's executive director Mazin Gilbert and CTO Manik Surtani [1].
Toronto follows on 5 and 6 October. The MCP Dev Summit there describes itself as part of a global series of technical gatherings for developers building real-world agentic systems, and its keynotes include Den Delimarsky, MCP lead maintainer, alongside speakers from NVIDIA, Accenture and TELUS [3].
San Jose is the largest of the four. AGNTCon + MCPCon North America runs 22 and 23 October at the McEnery Convention Center, with organisers expecting more than 4,000 attendees from over 1,500 organisations and more than 150 talks across 11 tracks [2]. Keynote speakers include Tim O'Reilly, Thomas Dohmke, Sarah Drasner of Google Chrome, Chi Wang of Google DeepMind, Bradley Axen of Block, Mark Collier of the PyTorch Foundation, and Soria Parra again [2].
Read the programmes, not the logos
This is where the side-by-side comparison earns its keep.
OpenAI's page describes a look at what OpenAI's teams are building [6]. That is exactly what a platform company's developer day should be, and it is valuable if you build on that platform. It is fundamentally a reveal.
The foundation's North America programme describes something else entirely. Its topics span agent infrastructure, the 2026-07-28 MCP specification, multi-agent systems, security, observability and production deployment patterns, and its five workshops, included at no added cost, cover human-agent collaboration, agent gateways, and security and access boundaries [2].
None of that is a launch. It is a curriculum for running agents you already have.
Some of it is also unfinished. As covered here this week, the agent identity work named on the MCP roadmap is split between one shipped piece that identifies the human through single sign-on and two proposals, DPoP and Workload Identity Federation, that have been open since December 2025 (MCP Shipped Identity for Humans. Agents Are Still a PR.). A workshop on security and access boundaries in October is where that gap stops being a pull request and becomes a deployment question.
The speaker rosters tell the same story. The two authors of the MCP roadmap published on 22 August, Soria Parra and Delimarsky, are both on this autumn's keynote lists: Soria Parra in Amsterdam and San Jose, Delimarsky in Toronto [1] [2] [3]. The editor of the WebMCP specification is keynoting Amsterdam [1]. If you want to hear why the protocol decisions went the way they did, or argue with them in person, these are the rooms where that happens.
The vendor mix on those stages is the other thing a single company's event cannot offer. Amsterdam's keynote list alone includes people from Anthropic, AWS, Hugging Face, Google, Google DeepMind and Microsoft, and San Jose adds Google Cloud and Block [1] [2]. Competitors sharing a keynote stage is the whole premise of a vendor-neutral foundation. It is also where differences between their approaches can be argued in the same room, rather than in separate launch posts.
One side of this calendar is showing capability. The other is teaching operations.
The fair objection
The strongest pushback is that this framing undersells DevDay. Plenty of teams build their agents on OpenAI's APIs, and for them the day those APIs change is the day their roadmaps change. A standards conference, however worthy, does not move a production system the way a platform release can. And The AI Conference is not an agent event at all; its breadth is the point.
That is true, and it is why the right answer is not "skip DevDay." It is to be clear about what each event is for before spending the travel budget. DevDay tells you what one platform will offer next. The foundation's events tell you how the shared infrastructure that sits between platforms is being built, secured and governed. Those are different decisions, and most teams need input on both.
How to choose
If you ship on OpenAI's platform, watch the DevDay keynote. It is livestreamed [6], so the most important hour does not require a plane ticket or a $650 pass.
If you run agents in production and care about MCP, identity, gateways or observability, Amsterdam is next week and San Jose is in October [1] [2]. The San Jose workshops are included with registration [2], which makes it the better value for a team trying to learn the operational side.
If you want breadth across the whole field, The AI Conference is the one built for that, and its AI Builders track is where the agent content concentrates [5].
If you cannot travel at all, mark the dates anyway. The protocol work discussed on these stages happens in public pull requests and roadmap posts, and following those is free.
Whatever you choose, plan around what organisers publish. A widely reported rumoured launch appears nowhere on the organiser's own page [6]. The dates, venues and programmes above all do.
The coincidence on 29 September will get the attention, because it is easy to picture. The quieter fact is that the people writing the standards your agents will depend on are spending this autumn in Amsterdam, Toronto, San Jose and Nairobi, and most of the rooms they are speaking in are open to anyone who registers.
References
[1] Agentic AI Foundation, Linux Foundation Events — AGNTCon + MCPCon Europe 2026. Documentation
[2] Agentic AI Foundation, Linux Foundation Events — AGNTCon + MCPCon North America 2026. Documentation
[3] Agentic AI Foundation, Linux Foundation Events — MCP Dev Summit Toronto 2026. Documentation
[4] The Linux Foundation — Agentic AI Foundation Announces Global 2026 Events Program. Article
[5] The AI Conference — The AI Conference 2026. Documentation
[6] OpenAI — OpenAI DevDay 2026. Documentation