From Athens to San Francisco: Greece's AI Moment Is Already Being Built

There are moments when an ecosystem does not simply participate in the global conversation. It steps closer to the center of it.

For Endeavor Greece, May was one of those moments.

Across Athens, London, and San Francisco, the organization brought together founders, investors, technology leaders, researchers, policymakers, and members of the Greek diaspora around one of the defining questions of our time: what role can Greece play in the future of artificial intelligence?

The answer did not come through one event, one panel, or one initiative. It came through a series of conversations and connections that pointed to something deeper. Greece is no longer only observing global technological shifts from a distance. It is building the companies, networks, and ambitions to participate in shaping them.

At the center of this story was San Francisco. See the Aftermovie.

A Greek AI Mission in the Heart of Silicon Valley

From May 18 to 22, the inaugural cohort of Greece's first National AI Accelerator landed in California for the final chapter of a three-month journey. 21 AI-native startups. 50 founders. Selected from more than 240 applications.

The initiative was created by Endeavor Greece in collaboration with OpenAI and the Hellenic Government, with PPC Group as exclusive sponsor of the San Francisco delegation.

Behind it all was one belief: world-class talent exists in Greece. What it needs is access to the right rooms, the right people, and the right support.

The agenda included six institutions most founders never get into.

At NVIDIA, hosted by John Josephakis, the conversation moved from supercomputing and startup support to NVIDIA Inception, Nemotron, open-source AI, and the infrastructure behind what comes next, with Howard Wright and John Wesley.

At Threshold Ventures, Andreas Stavropoulos and Tasso Roumeliotis spoke about leadership, resilience, and a reminder that stands out in any ecosystem: the hero of a successful company story is not the founder, but the customer.

At the Defense Innovation Unit, Scott Sumner and Dr. Victoria Coleman explored how dual-use technology companies work with U.S. defense programs through fast-track, non-dilutive contracts , a path already taken by companies such as Anduril and Shield AI.

At Stanford, conversations with Argyris Kriezis, Vasilis Syrgkanis, PhD students, and researchers focused on entrepreneurship, risk, and the mindset behind building from zero.

At OpenAI, with Laura Modiano, Aaron "Ronnie" Chatterji, Michael Brown, and Apoorv Jha, the discussion moved beyond the buzzwords and into how companies are actually building with AI today.

At Sequoia Capital, hosted by Konstantine Buhler, the conversation turned to what AI cannot replace: meaning, taste, creativity, and human connection.

The significance of the mission extended beyond the founders themselves. Journalist Manolis Andriotakis joined the delegation for Kathimerini and brought the story to the front page , not as a simple report about Greek startups visiting Silicon Valley, but as a broader story about ambition, technology, and Greece's opportunity to claim a more active role in the future of AI. A warm thank you to Manolis for capturing it with depth and care.

The Rooms Between the Rooms

The formal meetings were only part of the story.

Across the week, a series of dinners and off-site sessions put the 50 founders next to people they would not otherwise have sat with: investors evaluating frontier AI, operators inside the U.S. platforms most of these companies want to reach, and Endeavor Entrepreneurs who left Greece earlier in their careers and have spent the last decade building from the other side of the Atlantic.

The Welcome Dinner at an old printing plant set the tone on day one. A Stanford afternoon with burgers and beers on the lawn turned into conversations with PhDs, researchers, investors, and operators. A boat ride under the Golden Gate became the kind of setting where founders could continue discussions they had started that morning , more openly, more personally, with the city moving around them.

These moments were intentional. The point of bringing a cohort across the Atlantic is not only the meetings. It is to create the time, the space, and the right conditions for people to truly meet.

The founders also had the opportunity to sit with some of the most respected Greek voices in the global tech ecosystem through mentoring sessions opened up by the Endeavor network: Alexia Bonatsos, Niko Bonatsos, Michalis Potamias, Bill Stavroulakis, George Karamanos, Nikos Sarilakis, Konstantinos Laskaris, Theofanis Karaletsos, and Loukas Paraschis.

A huge thank you to everyone who spent time with the cohort across the week, including John Adractas (Co-Founder & CEO, TrustPoint AI), Marios Anapliotis (Founder & CEO, Evline), Ioannis Antonellis (Senior Engineering Manager, YouTube Developer Infrastructure), Fay Christodoulou (Co-Founder & CSO, Miroculus, Endeavor Entrepreneur), Yannis Dosios (VP, Global Client Solutions, Pinterest), Vassilis Koutsoumpas (Digital Policy and AI Adviser at the Office of the Prime Minister of Greece), Ippokratis Pandis (CPO, Databricks), Alexandros Paterakis (Deputy CEO and Head of Digital & Advanced Services, PPC S.A.), Dionysios Protopapas (Head of Economic & Trade Section, Embassy of Greece in Washington DC), Geoff Ralston (Former President, Y Combinator), Andreas Raptopoulos (Founder & CEO, Matternet, Endeavor Entrepreneur), Kristina Serafim (Untethered Ventures), and Afrodite Sevasti (CEO, PHAROS AI Factory).

Greeking Out San Francisco: The 20th Edition

The final night brought many of those conversations into one room.

Greeking Out San Francisco , the 20th global edition of Endeavor Greece's flagship community series , opened with remarks by Gregory Tassiopoulos, Consul General of Greece in San Francisco, and brought together the Greek innovation community around one question: what role can Greece play in the global AI race?

The first panel, Greece in the AI Race: Aligning Policy, Energy, Power & Infrastructure, featured Alexandros Paterakis, Afrodite Sevasti, and Vassilis Koutsoumpas, moderated by Eliso Kotsieva. The conversation made one thing clear: Greece's AI opportunity is becoming concrete. From energy-efficient data centres on former lignite sites to Pharos' privileged access to high-quality datasets and sovereign compute, to a policy stack moving through partnerships with OpenAI, Mistral, and recent international agreements, the foundations are being laid. As Vassilis Koutsoumpas noted, publicly available government datasets have grown from 80 to more than 12,000 within a year. Alexandros Paterakis spoke to PPC's evolution into an AI-driven business across energy, mobility, telecom, fintech, and data centres. Afrodite Sevasti pointed to the next stage: opening infrastructure, datasets, models, and pipelines to founders, engineers, partners, and investors.

The second panel turned to founders building AI where the stakes are physical, regulated, and deeply human , with Theofanis Karaletsos, George Kalligeros, George Favvas, and Yannis Dosios as moderator. The discussion covered the shift from molecule-by-molecule discovery to synthetic data and compute-driven science, the cost of human-heavy operations in autonomous systems, and a future where AI can process decades of medical history in seconds. Regulation, guardrails, hallucinations, data access, and societal disruption were all part of it , because building AI that matters also means building it responsibly.

To date, Greeking Out has brought together more than 5,000 attendees across New York, Boston, London, Singapore, and beyond. In San Francisco, the conversation carried a different weight. Less about whether Greece can participate in the AI race. More about who is ready to help shape what comes next.

The evening took place in partnership with PPC and The Hellenic Initiative.

The Cohort: 21 Companies Building from Greece

The 50 founders who made the journey to San Francisco represent some of the most ambitious AI-native companies being built in Greece today. Here is the full cohort:

Altrovia uses artificial intelligence to help clinical trials be designed correctly from the start, faster and with fewer errors. Georgia Lytra (Co-Founder & CEO), Christos Zoukos (Co-Founder), Nicholas Patas (Chief of Staff)

Dikaio.ai is an AI platform trained on Greek and EU law, enabling more efficient legal research and analysis. Michalis Rikakis (Co-Founder & CEO), Vasiliki Sfika (Co-Founder & COO), Menelaos Petousis (Co-Founder & CTO)

Hermetica builds document infrastructure for critical decision-making, enabling organizations to analyze and leverage large volumes of documents. George Iniotakis (Co-Founder & CEO), Loukas Mertzanis (Co-Founder & CTO), Theocharis Vasilakis (Co-Founder & CPO)

HouseMaster streamlines property discovery, helping owners, buyers, and brokers move faster with greater transparency. Marietta Lazana (Founder & CEO)

HumanBound provides continuous protection for companies building AI applications and agents. Dimitris Gerogiannis (Co-Founder, Co-CEO Product & Tech)

HumanLike builds an AI employee for HR that schedules interviews, evaluates candidates, and manages the hiring process. Minas Marios Kontis (Founder & CEO), Yannis Melandinos (Co-Founder)

Matilda Edu makes it easy to create educational content tailored to each classroom and every student. Dimitris Maris (Founder & CEO), Vasilis Kourtis (Co-Founder & CTO), Thanos Vidakis (Co-Founder)

Mantic uses simulations and AI to help organizations manage wildfire risk through prevention and preparedness. Vasileios Christou (Co-Founder & CEO), Christos Petalotis (Co-Founder & CTO), Georgios Efstathiou (Co-Founder & CPO)

Navos.ai helps CEOs make faster, more confident decisions by understanding in real time how global changes impact their business. Filippos Letsas (Co-Founder & COO), Thanos Petkakis (Co-Founder & CEO)

Nudge Care is the AI-powered prevention platform for Europe. Konstantinos Gkovedaros (Co-Founder & COO)

Orom.ai creates real-time 3D representations of environments and objects for physical AI agents. Charis Christofi (Co-Founder & CEO)

Qwest is an AI-powered revenue and personalization layer for hospitality, automating data, campaigns, and execution. Konstantinos Tsetsos (Co-Founder), Aristogiannis Filippis (Co-Founder)

Sally is the first AI application designed to help younger generations build a healthy relationship with money by speaking their language. Nikolaos Kousathanas (Co-Founder & CTO)

Sporo Health reduces clinical bureaucracy by automatically adding patient information to clinic software, saving around 30% of manual data entry. Gerasimos Kouloudis (Core Member of the Clinical Team)

Synthesa is an AI platform that accelerates evidence synthesis in healthcare, currently focused on systematic literature reviews and meta-analyses. Kyriakos Polymenakos (Co-Founder & CTO)

Tacit Intelligence acts as a single source of truth for financial data, ensuring accuracy and consistency across models and documents. Alkis Toutziaridis (Co-Founder)

Uplodio is an AI agent that enables brands to scale and manage global influencer collaborations fully autonomously. Konstantinos Ketselidis (Co-Founder & CEO), Alexis Vasileiou (Co-Founder & CPO), Konstantinos Lampropoulos (Co-Founder & CTO)

Voice Logica builds AI voice agents that help businesses automate and scale communication. Apostolos Ioakeim (Co-Founder & CEO)

What Comes Next

The week was never really about one week.

The 50 founders are now back in Greece with relationships that did not exist a month ago. Customer conversations that started in a boardroom in Palo Alto. Investor conversations that started over dinner in San Francisco. A clearer read on where they fit in the global AI landscape, and what they need to build next.

The program continues. The work of turning a cohort into a generation of globally competitive Greek AI companies is just beginning. The infrastructure being built around them , policy, capital, compute, mentorship, community , is being built in parallel, by people who have decided that ambitious things can be built from Greece again.

There is more coming. More cohorts. More partnerships. More founders stepping into rooms they were told for years they did not belong in.

The distance between Greece and Silicon Valley is no longer measured only in kilometers. It is measured in access, mindset, and connection.

And this May, that distance became smaller.

The Greek AI Accelerator is implemented by Endeavor Greece in collaboration with OpenAI and the Hellenic Government. The San Francisco delegation was made possible thanks to PPC Group, Official Delegation Sponsor and Endeavor Greece Ambassador. Greeking Out San Francisco took place in partnership with The Hellenic Initiative. The aftermovie was produced by Ludens Creative Production.