Ojin AixHaus, Berlin's community space for AI builders

Direct answer: Ojin AixHaus is a community space and rooftop in Berlin, run by Ojin, where AI builders and community organisers meet, run workshops and demo what they are shipping. It is an events venue rather than a desk-rental coworking space, and outside organisers such as GDG Berlin host their own sessions there.

Most companies that want to be visible in a local tech scene sponsor a conference booth once a year. Ojin AixHaus takes the opposite approach: a permanent space in Berlin that outside organisers can bring their events to, week after week, for free.

What Ojin AixHaus is

Ojin AixHaus is a physical space with a community area and a rooftop, which Ojin makes available to AI-focused meetups, workshops, and builder communities. The name carries the "Aix" root, but the space itself is in Berlin, not Aachen; Ojin is a Berlin-based company, and AixHaus is where that presence becomes a room you can walk into.

Some people land on this page after searching for an AI coworking space in Berlin. AixHaus is not that. There are no desks to rent and no monthly membership. It is closer to a Berlin AI meetup space that outside organisers borrow for an evening than to a coworking floor you show up to on a Tuesday morning.

Ojin does not programme the space. Outside organisers bring their own programming and their own audience, and AixHaus provides the room. When GDG Cloud Berlin, the AI Guild, or Ampli Berlin run a session there, they are the hosts. Ojin AixHaus is the venue that said yes.

That model works because of where it sits. When Berlin Partner, the city's business development agency, opened its #ai_berlin hub in October 2025, it wrote: "With 30% of Germany's 687 AI startups based in the capital... Berlin has firmly established itself as a European powerhouse in artificial intelligence". A room that hosts other people's meetups only works if the city already has meetups worth hosting.

What an evening there looks like

The layout is simple by design. The community area handles the talks, demos and workshops, set up the way the visiting organiser needs it: theatre-style for a talk, or clustered tables for a hands-on session. The rooftop is where the evening tends to move once the formal part ends, and it is the part most people mention afterwards.

The shape of an evening at Ojin AixHaus, in Berlin Mitte, does not vary much by organiser, even though the content on stage does. Doors open in the early evening, with the formal part starting about half an hour later. That rhythm shows up plainly in the record: episcope's "One Last Prompt" Summer Edition opened doors at 19:00, moved into demos at 19:30, and wrapped by 22:00, a timeline that is typical of the space even when the format is a technical workshop rather than a demo night.

The room sets expectations the moment you walk in. A GDG Cloud Berlin or GDG Berlin session usually means theatre-style seating facing a screen, laptops out. A session like the AI Guild's "Beyond the LLM?" rearranges the same room toward conversation rather than a stage, chairs angled inward instead of all facing forward.

What changes the mood, more than the room itself, is the moment the formal programme ends. People start drifting toward the rooftop, drink in hand, and the conversation stops being about the slide that just went up and starts being about what someone in the room is building. It is the same shift, evening after evening, whichever organiser is hosting: a focused hour or two of content, then an unhurried stretch outside where most of the real connections get made.

There is research behind that impression. A 2022 National Bureau of Economic Research working paper, The Returns to Face-to-Face Interactions by David Atkin, Keith Chen and Anton Popov, used smartphone location data to track in-person meetings between workers at different Silicon Valley firms. The returns showed up in the patent citations that followed, and the effect was concentrated in unplanned encounters rather than scheduled ones. Unplanned encounters are the ones that pay off, and they need a room.

Who uses the space

Berlin already has a dense AI and developer community. The same #ai_berlin announcement counted nine AI research institutions in the city and 15% of every AI professional in the DACH region. Startup Heatmap Europe ranks the city first in its Vibrant Community Hubs measure, ahead of London, Brussels, Luxembourg and Amsterdam. A recurring set of organisers use AixHaus as one of their venues: GDG Berlin and GDG Cloud Berlin (Google Developer Group chapters running technical sessions on cloud, agents, and multimodal AI), the AI Guild, Ampli Berlin (product and AI workflow sessions), and a wider set of Berlin tech and diversity-in-tech communities including Hertie, Women in Big Data, Women Techmakers, Weird Wentures, and SOIREE.

The pattern across these groups is the same: a technical or product-focused session, usually 40 to 60 attendees, followed by informal conversation on the rooftop when the weather allows it. AixHaus is one venue among many in that scene.

The audiences are more varied than a single "AI meetup" label suggests. A GDG Berlin or GDG Cloud Berlin session draws a technical audience, developers who want the walkthrough rather than the pitch. Ampli Berlin's sessions pull in product people who care more about the workflow than the model underneath it. The AI Guild and ZemaF e.V. draw a more discursive crowd, comfortable with a session built around an open question rather than a demo. Founder-and-leadership sessions, like the Personal Branding Masterclass that drew more than 150 people, fill a different room again, closer to operators and public-facing founders. Formats like episcope's invite-only "One Last Prompt" series sit at the smaller, more deliberate end, capped at 30 people by design, for practitioners who already use AI daily and want to compare notes rather than sit through an introduction. The common thread is that AixHaus works best for organisers with a real audience and a specific reason to gather it, not a generic "let's all meet up" invite.

What has been hosted there so far

Sessions hosted at Ojin AixHaus so far include a Multimodal AI workshop with GDG Berlin, featuring Antonio Rueda-Toicen of NVIDIA, which drew more than 50 builders. GDG Cloud Berlin brought Iliyan Peychev to talk about evolving Cloud Run apps into agents with Google's Agent Development Kit. An Ampli Berlin session with Dorra Mlouhi on using AI for market research with Cursor, Claude and Model Context Protocol (MCP) servers. A ZemaF e.V. and AI Guild session, "Beyond the LLM?", exploring what comes after the current generation of language-model-centric products.

Each of these was organised by the visiting group. Ojin AixHaus supplied the space and the rooftop, then wrote the recap.

The sample above leans technical, but the calendar runs wider than workshops. Margaux Pelen brought her invite-only "One Last Prompt" series to the space for a Summer Edition capped at 30 AI practitioners, structured around live demos followed by open discussion rather than a standard Q&A. At the other end of the scale, Angeley Mullins's Personal Branding Masterclass filled the room past its usual workshop capacity, drawing more than 150 founders and leaders for a session on building a voice AI cannot replicate, one of the largest evenings the space has hosted. The format has also travelled beyond Berlin: Peter Kasza and Dirk Soldner took Ojin's own live-avatar demo to KI Summer Summit in Stuttgart, building avatars in front of an audience rather than showing a pre-rendered reel.

Why Ojin runs a physical space in Berlin's AI community

Ojin builds infrastructure for human AI agents, and infrastructure companies have an obvious failure mode: talking to developers only through documentation and never through a room. Its flagship product, Human Agents, bundles speech recognition, reasoning, a face model and speech synthesis into one agent, and the people who build on that are the people who fill the room on a weeknight. If you are new to the category, the primer on what a human AI agent is covers the terms used in most sessions here.

AixHaus is Ojin's answer to that failure mode. It puts the team in the same room as the people building with agents, LLM tooling and multimodal AI, week after week, the kind of proximity behind measured knowledge spillovers between startups that share a room. Berlin Partner's 2025 startup ecosystem report ranks the city third in Europe for artificial intelligence, with more than 9,000 AI specialists in frontier research. Dealroom values the wider ecosystem at €169bn across some 1,600 venture-backed startups.

It is a distribution decision as much as a community one. A builder who attends a useful session at AixHaus, hosted by a group they already trust, forms an impression of Ojin as the Human AI Company embedded in the scene it serves rather than a sponsor logo on a conference banner.

How to host an event at Ojin AixHaus

If you organise a meetup, workshop, or community session focused on AI, agents, or developer tooling in Berlin, Ojin AixHaus can be a venue. The visiting organiser brings the programme, the speakers and the audience, and handles registration through their own channels. Ojin provides the community area, the screen and seating, the rooftop for the informal half of the evening, and the recap afterwards.

Send dates and a short outline of the format to the team through Ojin's site, and confirm the layout you need at the same time, because a hands-on workshop and a demo night use the room differently. Community-focused sessions carry no charge to the organiser. Recaps of past sessions and the rest of Ojin's writing sit on the insights hub.

Frequently asked questions

Where is Ojin AixHaus?

Berlin, Germany. The "Aix" in the name does not refer to Aachen; the space is a Berlin community venue run by Ojin, a Berlin-based company.

Is Ojin AixHaus a coworking space you can rent a desk in?

No. Some visitors arrive searching for an AI coworking space in Berlin, but AixHaus is an event and community space, not a desk-rental business. Its primary use is hosting meetups, workshops, and community sessions run by outside organisers.

Who organises the events at Ojin AixHaus?

Outside community groups and meetup organisers, including GDG Berlin, GDG Cloud Berlin, the AI Guild, and Ampli Berlin, among others. Ojin AixHaus is the venue; the visiting organisation is the host.

Can I host my own AI-focused meetup there?

Yes, if your event fits the space's focus on AI, agents, and developer tooling. Contact the Ojin team to discuss availability.

Does hosting at Ojin AixHaus cost anything?

Community-focused sessions are hosted at no charge to the organiser.

How many people can a session at Ojin AixHaus hold?

Most sessions run 40 to 60 attendees, the size that fits the community area for a talk or workshop. Capacity varies by format: an invite-only demo night has run as small as 30 by design, and the largest session to date, a founder-focused masterclass, drew more than 150 people. Confirm capacity for your specific format when you reach out.

How do I get on the guest list for an event at Ojin AixHaus?

Through the organising group, not through Ojin directly. Registration runs through whichever community is hosting, for example a GDG Berlin or Ampli Berlin event listing for an open session, or a direct invitation for a capped, invite-only format like "One Last Prompt". Check the host organisation's own listing for how to register.

Ojin posts recaps and upcoming sessions on LinkedIn, and AixHaus community updates live on the Ojin community page.