Ido Fishman
AI investor. AI builder. Founder & Managing Partner, Milenny Ventures.
Backing the founders and infrastructure behind applied AI. Based in Limassol, Cyprus. Sub-10 Ironman finisher.
Determination and AI
Updated Apr 2026
What I'm focused on right now
- 01Backing AI-infrastructure founders from pre-seed through Series A.
- 02Running a production stack of AI agents in daily operations, and writing about what actually works.
- 03Publishing essays on AI investing, building, and the operator’s lens on both.
- 04Training for a return to the Ironman distance, a second sub-ten attempt, four years on.
Essays on AI investing, building with agents, and the operator’s lens on both.
Selected essays
Why I'm passing on AI wrappers in 2026
The moat question is louder than it's ever been, and the answer most founders give is the wrong one.
AI Investing·7 minMy production AI agent stack, six months in
What I run, where it breaks, and the unglamorous glue-code that determines whether any of this actually ships.
Building with AI·9 minWhat I tell AI founders about distribution
Model quality is the easy part. Getting it in front of users who will pay for it is not.
Founders & Scaling·6 minTraining plans and investment theses have the same shape
Both are bets on compounding discipline across a twelve-month horizon. Both break in the same ways.
Determination·5 min
New essays regularly. RSS: /rss.xml
He is not a spectator investor.
Ido Fishman is the Founder and Managing Partner of Milenny Ventures, an early-stage firm backing the founders, teams, and infrastructure behind applied AI. He writes checks from pre-seed through Series A and sits close to the operator work that defines modern AI companies.
Unusually for an investor, he ships. He runs his own production stack of AI agents across daily operations, the kind of hands-on build-and-break that most check-writers stopped doing years ago. That context shows up in how he diligences founders and how he advises them after the wire hits: not from a deck, from the terminal.
Outside the work, Ido is a long-distance triathlete. Ironman Barcelona 9:55:14, the sub-ten club. Fourth age group at 70.3 Greece. Six mornings a week in the water, on the bike, on the road since 2018. The discipline of a twelve-month training block and the discipline of a twelve-month investment thesis, he’s found, are closer than most people realize.
He lives and works in Limassol, Cyprus, a useful vantage on both European and Middle-Eastern AI ecosystems, and writes in English about what’s actually working at the builder-investor seam.
Answers to the questions that come up most often.
Frequently asked questions
- Who is Ido Fishman?
- Ido Fishman is the Founder and Managing Partner of Milenny Ventures, an early-stage venture firm backing AI companies. He is also an AI builder who runs his own production agent stack, and a sub-10 Ironman finisher. He is based in Limassol, Cyprus.
- What does Ido Fishman do?
- He invests in early-stage AI companies from pre-seed through Series A, with a focus on AI infrastructure, agent tooling, and vertical AI applications. Outside of investing he ships production AI systems of his own, writes essays on AI investing and building, and trains as a long-distance triathlete.
- Where is Ido Fishman based?
- Ido lives and works in Limassol, Cyprus. Cyprus is a useful vantage point on both European and Middle-Eastern AI ecosystems.
- What is Milenny Ventures?
- Milenny Ventures is an early-stage venture firm founded by Ido Fishman. Milenny backs founders, teams, and infrastructure behind applied AI, investing from pre-seed through Series A. More information on the firm is published on milenny.com.
- What does Ido Fishman invest in?
- AI infrastructure, agent tooling, and vertical AI applications with structural data advantages. He looks for products with deep workflow integration, compounding proprietary data, and founders who ship integrations weekly rather than quarterly.
- Is Ido Fishman an AI investor or an AI builder?
- Both. He is an operator-investor. He runs a daily stack of production AI agents across his own operations, which informs how he diligences founders and advises them post-investment.
- How can I contact Ido Fishman?
- General inquiries go to hello@idofishman.ai. Press, speaking, and podcast invitations go to press@idofishman.ai. Founders raising a round can reach out through Milenny Ventures at milenny.com.
- Does Ido Fishman write?
- Yes. He publishes essays on AI investing, building with AI agents, and lessons from backing and scaling AI companies at idofishman.ai/writing. New essays go out regularly.
- What is Ido Fishman's Ironman time?
- 9:55:14 at Ironman Barcelona 2022, finishing 21st in age group (M35–39) and entering the sub-10 club. He has also recorded top-10 age group finishes across multiple 70.3 races since 2019.
Building something? Let’s talk.
Pitch / Deal flow
hello@idofishman.aiShort is better. A paragraph + a link to your deck beats a form.
For Milenny Ventures deal inquiries routed through the firm, milenny.com.