What makes an AI ecosystem truly founder-driven – and what is often missing when innovation is reduced to programmes, batches, and deal flow? In our new ai.berlin interview, Sam Rowe of Æthos reflects on the power of curated communities, trusted peer networks, and interdisciplinary exchange in shaping ventures that are not only scalable, but responsible. The conversation explores why collaboration, proximity, and shared visibility can matter just as much as funding in the early and growth stages alike. 

With roots in Cambridge near MIT and a growing presence in Berlin, Æthos operates at the intersection of founders, researchers, policymakers, and investors. Sam shares his perspective on Berlin's role in the global AI landscape, the importance of transatlantic bridges, and the broader themes shaping his work in 2026 – from sovereignty and standards to the long-term societal impact of AI.

Sam, Æthos brings together AI founders with a strong focus on collaboration and ethical responsibility; from your perspective, what makes founder-driven ecosystems effective, and what tends to be missing in traditional innovation or accelerator models? 

Fundamentally, founders seek proximity to potential clients, investors, experts, and other founders. Why? While revenue, investment and legitimacy are clear objectives, many forget how essential peer support is. While loneliness is one risk, the real danger posed by isolation is that founders cannot share many burdens. When founders are able to form trusting relationships in well respected ecosystems, they collectively raise their visibility and find connections to relevant stakeholders faster. Accelerators have good business models and can help startups with this early on. Unfortunately, they often just compete for deal flow and will reject anyone too early or too late for their programme. Curated communities that are more flexible and do not take equity are able to offer the benefits of a strong ecosystem to founders at all stages of growth. 

After launching in Cambridge close to MIT, Berlin became your first international location; what convinced you that Berlin was the right next step for Æthos, and how did your experiences from the Boston ecosystem shape your expectations of the city? 

Berlin offers strong links to the Greater Boston research community with key institutions like Charité sending many individuals each year to MIT and other local partners of ours. Aside from the openness of social and professional networks, when we visited Berlin for the first time in 2024, we saw a deep bench of technical talent. Where Cambridge offers us a high density ecosystem concentrated in one geographical area, Berlin offers proximity to key decision makers in EU and local government. 

Æthos positions itself as a network that goes beyond startups by connecting founders with researchers, policymakers, ethicists, and investors; how do these different perspectives practically come together in your day-to-day work, and where do you see the greatest added value of this interdisciplinary approach? 

Roundtables that enunciate real challenges faced by industry, hackathons that prototype the unimaginable, and symposiums that bring builders, users, and funders out of their echo chambers are bread and butter for us. Validation, revenue, and foresight when it comes to the longer term impact of our work on society are key benefits. 

As a launch partner of the ai.berlin hub: what role do you see Æthos playing in Berlin's broader AI ecosystem – and how do you hope to contribute to raising the city's profile?

As a platform Æthos hopes to incubate solutions that establish common branding and amplification that raise Berlin's profile and share data on the ecosystem. We hope to introduce our internal pilots into the larger ecosystem and simply facilitate our members to build relationships with existing players. 

Berlin is home to a diverse and fast-growing AI community; from your international viewpoint, what is one contribution Æthos can uniquely make to the local ecosystem, and where do you see opportunities for Berlin to further sharpen its profile as a global AI hub? 

Æthos seeks to create a synergistic bridge between American and European AI ecosystems. Berlin needs to inject its local community into prominent global networks in repeatable ways as well as equip newcomers to rapidly obtain the resources they need to grow. Acting as a gateway to Europe for foreign AI companies seeking to enter the market is a real opportunity. Currently Germany suffers from a reputational problem as a bureaucratic economy. Yet German products are looked on with respect as marks of quality. Enabling pathways for AI companies to systematically receive stamps of approval that show their clientele their products are trustworthy and robust is of material value. In the United States, Delaware is preferred for so many companies to incorporate because its legal system has garnered investor trust. I think Berlin has a real opportunity to map its ecosystem in normative ways that highlight the performance and ethical standards of AI tools 'made in Berlin'. 

You are involved in a range of AI-related initiatives and projects; which areas or themes are currently most relevant to you, and how do they reflect your broader vision for responsible AI development? 

Sovereignty, democracy, and sustainability loom large for me in 2026. As an American, I see preserving democracy as my civic duty over the next 10 months. I am dedicating my own time within Æthos to bringing technical geniuses, politicians, and funders together to build, validate, and share promising ways AI can transform our politics for the better. The current moment calls for clear focus here. 

Thanks for the great conversation.