- The season is 1 October through 31 December 2026, not one global keynote. Google’s 14 September post names the theme “Build, Secure, Scale: Developers and Builders in the Agentic Era,” expects nearly a million developers, and cites 115 countries and more than 800 events.
- The named tools are Gemini, Google AI Studio, Google Antigravity, Google Cloud, Firebase, Android, Flutter, Angular, and Web MCP. The formats are live codelabs, workshops, and agent-athons.
- There is no single worldwide timetable. The calendar below only includes GDG pages that have already published an agenda, and those pages say the agenda can change.
- In the same quarter Google Cloud runs Agents for Impact. That is a Cloud hackathon series, not DevFest.
The season: communities host, Google supplies the tools
Local Google Developer Groups host DevFest. Google names the stack to practice this season. The GDG sets the agenda, the room, and the tickets. “What DevFest 2026 covers” can be answered at the theme-and-tools layer. What your city actually teaches is on that event page.
The 14 September post compresses the year into three lines: it has never been easier to build; what you build should be safe; production-ready infrastructure should be there from day one. The hands-on formats are codelabs, workshops, and agent-athons. Find a city in the DevFest event directory and follow #DevFest. Counters on the directory page can disagree with the post’s “more than 800 events,” because GDGs are still adding dates.
The AI tracks that keep showing up
These three lines are not official track names. They are what repeats when you lay published local agendas on top of the official tool list.
Gemini and AI Studio: ship something that runs, on a clock
Bay Area on 1 October splits the room. The developer track has a 75-minute Google Cloud lab led by Shir Meir Lador, then a timed Gemini Dev Challenge judged by Google and industry reviewers. The builder track is the Vibe Lounge: Christina Lin runs a short intro on building with Gemini, then guided builds of about 40 minutes. The page says no formal coding background is required.
Harare on 24 October is more specific in its titles: build and deploy a native Android app in 45 minutes with AI Studio, and a Flutter session on Generative UI. That is the on-site version of “Gemini is not only a chat demo.”
Agents: ADK, multi-agent systems, A2A, and MCP
The agent line started before the official season. On 16 September, Skopje’s Pre-DevFest had two sessions: Dr Roushanak Rahmat on designing sequential, parallel, and other multi-agent systems with ADK, and Akshata Mohanty’s workshop on a distributed multi-agent system on Google Cloud. It sits before 1 October, so treat it as a warmup, not as part of the in-season count.
After the season opens, Modena is more explicit. On 3 October, 17:15–17:45, the session titled The Agentic Efficiency Paradox uses ADK 2.0 and Gemini 3.1 and argues that once generation speeds up, the bottleneck moves from writing code to review. On 4 October, 12:00–12:30, the talk covers multi-agent orchestration: when to keep a deterministic graph, when to leave room for autonomy, plus sub-agents, tools, MCP, and A2A, with handoffs defined by Pydantic input and output schemas. That is the scope of those talks, not a version note Google published at DevFest.
One earlier local event is useful background. On 18 April in Pisa, Daniela Petruzalek spoke about production-style agents with ADK and Vertex AI—memory, sessions, and RAG—and mentioned Gemini CLI. That spring event is outside the October–December season.
Developer tools: Flutter, Android, Firebase, Gemma, Antigravity
The official list also names Firebase, Android, Flutter, Angular, and Web MCP. Cape Town on 10 October already tags Gemini, Gemini Enterprise Agent Platform, Gemma, Android, Firebase, Flutter, and Google Cloud. The event page does not yet expand a session-by-session timetable.
Bay Area’s experienced tracks are marked Tentative. They include a Gemma 4 fine-tuning workshop, Gemini for Robotics, AI Security, Agentic AI with ADK, and Mobile, Android & AI. Read “Gemma 4” as the title of that workshop until the page says otherwise. Do not write it up as a Gemma 4 launch at DevFest.
Antigravity shows up in two places: the official tool list, and the Münster hackathon on 21 November. The GDG page says the sprint uses Antigravity and Google AI Studio for local-impact projects. The Devpost rules are tool-agnostic: Gemini, Gemma, ADK, Firebase Genkit, and Flutter are welcome, and so are Claude, Antigravity, OpenAI, or local open-weight models. Tool choice does not lower the score.
Calendar of sessions already published
Only events whose pages we checked are listed. A missing city does not mean there is no DevFest there. It means the agenda was not public enough to quote. Recheck the page you registered on during the week you travel.
| Date | Event | AI content already public | Check before you go |
|---|---|---|---|
| 16 Sep | Skopje Pre-DevFest | 17:15–18:15 CEST, multi-agent ADK; 18:25–19:25, a distributed multi-agent workshop on Google Cloud | Warmup before the official season, at FCSE |
| 1 Oct | DevFest Bay Area, Circuit Launch, Mountain View, 9:00–21:00 PDT | Keynote by Richard Seroter; Cloud Lab with Shir Meir Lador; Gemini Dev Challenge; Christina Lin’s Vibe Lounge. Tentative experienced tracks include Gemma 4 fine-tuning, ADK, and AI Security | The page says Subject to Change. Cloud Labs is printed as “11:00 PM–12:30 PM,” between a morning keynote and a 12:30 lunch. Confirm it is the morning block |
| 3–4 Oct | DevFest Modena | 3 Oct, 17:15–17:45: ADK 2.0 and Gemini 3.1, on the review bottleneck. 4 Oct, 12:00–12:30: multi-agent systems, MCP, A2A, Pydantic schemas | Those are two talk slots, not the full-day agenda |
| 10 Oct | DevFest Cape Town, University of the Western Cape, 08:00–16:00 SAST | Theme tags include Gemini, Gemini Enterprise Agent Platform, Gemma, Android, Firebase, Flutter, and Google Cloud | A session-by-session timetable is not expanded on the event page yet |
| 24 Oct | DevFest Harare, Harare Institute of Technology | Flutter Generative UI; a native Android app in 45 minutes with AI Studio; ADK 2.0 and Gemini Enterprise Agent Platform for African SMEs; recommender systems with KerasRS and JAX | The page window is 07:00–14:00 UTC. Clock times on the agenda table do not line up cleanly with that window. Use the event page |
| 21 Nov | DevFest Münster Agentic AI Hackathon, VHS Münster | An ADK workshop, then a hackathon using Antigravity and Google AI Studio | The GDG page says 12:00–19:00 GMT+1. Devpost says doors at 9:00 CET, submissions close at 15:00 CET, and winners at 17:00. The two clocks disagree |
Agents for Impact is a Google Cloud series, not a GDG DevFest. The Atlanta event is 27 October at Coca-Cola Roxy, 8:00–18:00 EDT, and names Antigravity, ADK, Gemini, and BigQuery. Winning teams are aimed at a Cloud Next ’27 stage. Do not swap that signup page with the DevFest directory.
Pick a session by the job, not the city name
- You want a running app the same day. Look for AI Studio, the Vibe Lounge, Flutter GenUI, and the 45-minute Android session. Bay Area’s builder track says a formal coding background is not required.
- You want agents with a clean handoff. Look for ADK, multi-agent graphs, A2A, MCP, and Pydantic schemas. Modena on 4 October is that line.
- You care about security and review. The official Secure line is deployment, data, and responsible guardrails. Bay Area has a tentative AI Security track. Modena on 3 October argues that faster generation makes human review the new bottleneck.
- You want fine-tuning or production infrastructure. Look for Gemma, Vertex, Cloud Lab, and Firebase. Bay Area’s Gemma 4 workshop is still tentative.
- You only need the nearest event. Use the directory. This calendar does not replace it. It only covers pages we could quote.
Workshops expect your own laptop
The Bay Area page lists a laptop and a charger as required for the Cloud Lab and the Vibe Lounge. The venue supplies Wi-Fi and power strips. Other cities usually work the same way: the codelab runs on your machine.
A laptop is enough for a demo you can finish that day. Keeping the repo running afterward hits two things laptops do poorly. First, a Flutter iOS build, the simulator, and signing all sit on macOS. Second, a long agent-athon or a post-event ADK loop dies when the lid sleeps and takes the process and the context with it. Eval scripts, a night build, and “continue yesterday’s branch tomorrow” fit a Mac that stays awake.
DevFest does not hand you a cloud Mac, and the hosts should not be read that way. The split can be concrete: the venue laptop does that day’s lab and notes; a Cloud Mac keeps Flutter, Xcode, the repo, and the terminal session. A Linux sandbox fits general scripts. Do not pretend a sandbox can sign off a macOS toolchain.
FAQ
When is Google DevFest 2026?
It is not a single day. Google’s 14 September 2026 post sets the season as 1 October through 31 December, hosted by local Google Developer Groups. The post expects nearly a million developers, in 115 countries, across more than 800 events.
Is there one global AI agenda?
No. The official theme is Build, Secure, Scale: Developers and Builders in the Agentic Era. The named tools are Gemini, Google AI Studio, Google Antigravity, Google Cloud, Firebase, Android, Flutter, Angular, and Web MCP. Each GDG chooses the sessions.
How do Gemini and agents show up?
Published agendas already include timed Gemini challenges, an AI Studio Android app, multi-agent ADK, A2A, MCP, and Antigravity listed as a hackathon tool. Those are local session titles, not a product list Google launched at DevFest.
What is an agent-athon?
Google lists it next to codelabs and workshops: a hands-on session where people build agents on site. Münster’s 21 November Agentic AI Hackathon is one. It is a different series from Google Cloud’s Agents for Impact hackathons.
When does registration open, and is it free?
Google says events start 1 October and registration opens in advance. Some sell out. Price, refunds, and whether a ticket guarantees entry are set by the local host. The Bay Area page says tickets are non-refundable and registration does not guarantee admission.
How does this relate to Google I/O or Cloud Next?
DevFest is a GDG community conference, not the I/O or Cloud Next keynote. In the same quarter Google Cloud runs Agents for Impact, including Atlanta on 27 October. That series points at a Cloud Next ’27 stage. Do not merge it into the DevFest calendar.
Close
Three lines are enough. The season is the whole fourth quarter, not a one-day launch. The AI line is timed building with Gemini and AI Studio, plus multi-agent ADK, with Antigravity, Flutter, Android, Firebase, and Web MCP on the tool list. The timetable is the GDG page for the event you are attending.
Recheck the clock before you travel. Bay Area printed a morning block with a PM typo, and Münster’s GDG page and Devpost do not share one schedule.
After the workshop, the repo still needs a machine that stays awake
The laptop at the venue is for that day’s codelab. Flutter iOS builds, Android Studio, and a long agent loop belong on a Cloud Mac that does not sleep. The laptop reviews the diff.