Kobi Marenko

Co-Founder, President at Arbe

📍 Israel, Israel🔄 Updated September 2026💼 11 investments📅 11 years investing🗓 Last invested Jan 2026𝕏 @upgrade_to_unlock
VC🌍 IsraelInvested this year
11
Total investments
6
Early stage
2
Mid stage
0
Late stage
11y
Years active

Portfolio

10 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Investor
Dec 2025
Sairen is a conversational AI platform that manages customer relationships through AI agents, automating communications and providing a unified monitoring tool to handle all customer interactions from a single omnichannel hub. Built for SMBs and mid-market companies fighting two critical problems: labor costs and fragmented tools/data. Designed for customer-facing teams, addressing the needs of support, sales, marketing, administrative, and compliance teams simultaneously—from one platform combining the power of a ticketing system, phone system, marketing automation tool, and analytics dashboard. Our solutions: 1) Ocean – All channels unified for simple management. Write and respond directly from the platform 2) AI Conversational Agents – Creation, supervision, monitoring, deployment. Automate 70% of conversations 3) Ticketing System – Human-in-the-loop when needed 4) Monitoring System – Full visibility across interactions, locations, teams, and agents 5) Ulysse – Workflow builder to automate entire customer journeys and... Rainbow - our next product ;) big announcement yet to come. We help major companies like Best Western, Clinique des Champs Elysés and Hartmann Healthcare Group save time and money, differentiate the customer experience, and accelerate revenue growth.
Investor
Jul 2025
Ensemble is building the trustless operating layer for AI agents and humans to work, transact, and scale together. AI agents are rapidly emerging as the next wave of internet infrastructure - powering research, trading, content, governance, and collaboration. But today, the ecosystem is fragmented: agents struggle with discovery, trust, payments, and interoperability. Ensemble solves this by providing: - Agent Hub – a marketplace where agents can be discovered, compared, and monetized. - Cross-chain payments – instant, verifiable, and trustless transactions between humans and agents. - Verification & reputation – ensuring agents are reliable, auditable, and secure. - Framework-agnostic integration – compatible with Eliza OS, Virtuals, LangChain, and beyond. Beyond infrastructure, we’re also building specialized agents that help companies and organizations engage, educate, and onboard their communities - making it easier to turn new users into long-term contributors and advocates. Our mission is to unlock the full potential of autonomous collaboration by making AI agents not just tools, but service providers that can be trusted, paid, and scaled. We’re already partnering with leading infra providers, and agent ecosystems to make this future real. 👉 If you’re building in AI or community growth - and want to explore how agents can power your organization - let’s connect: Contact us: hello@ensemble.codes
investor, advisory board
Mar 2025
Epsilon is the platform for Israeli climate tech founders
Investor
Dec 2021
Addionics is a growing, progressive startup based in Israel, the UK and the US. Addionics provides specialised improved rechargeable batteries by redesigning their architecture. With a novel and patent pending 3D metal fabrication method, we enhance performance, mileage, safety, cost and charging time of batteries. Addionics architecture work with current and emerging LIB technology. In short - we are betting on the race, not the horse. So whatever battery chemistry wins, our technology will enhance it yet further. There are two sides to the company - hardware making smart 3D current collectors, and software where AI will optimise given structures for given performance attributes.
Investor
Oct 2021
one.five is a biomaterials research, development and scale-up company, providing circular, cleaner and tailor-made packaging solutions in record time and with measurable impact to the consumer packaged goods industry.
early stageBiotechnology
Investor
Oct 2020
Yaak accelerates the adoption of end-to-end (E2E) learning for spatial intelligence by building essential infrastructure: tools for dataset visualization and search, the world’s largest open-source multimodal dataset, and libraries for training and deploying E2E AI across robotics verticals. A natural language interface streamlines the entire workflow—allowing both experts and non-technical users to train and deploy robotics AI with ease. This enables a new paradigm: using English as the interface for programming spatially intelligent robots.
Investor
Jan 2020
Datomize is a fully managed platform providing real-time codeless machine learning. It loads your datasets, trains the best learning algorithm to your needs and deploys - all in under a minute, automatically. Datomize opens the possibility to use real-time machine learning models for everyone with less effort at a lower cost.
Investor
Aug 2016
Infarm is a global vertical farming company that revolutionises the food supply chain and helps make cities self-sufficient in their food production. It was founded in Berlin in 2013 by Osnat Michaeli and the brothers Guy and Erez Galonska, who turned a 1955 Airstream trailer into the worlds first mobile vertical farm. From this humble beginning, Infarm has partnered with the world’s top retail chains and is focused on North America and Europe. Infarm’s product catalogue consists of a variety of more than 75 plants such as herbs, leafy greens, salads and microgreens. Infarms modular farming systems are highly efficient, capable of growing more than 500,000 plants annually on just 40m2 of floor space. In addition to using 95% less land, Infarm requires 95% less water than traditional farming methods and uses no chemical pesticides. So far, Infarm has harvested over 40 million plants, while saving more than 145 million litres of water, more than 203,000m2 of land, and nearly 1.6 million food miles (about 3 million km) with its production methods. Infarm has set a science-based net-zero carbon target through The Science Based Targets initiative and is a Certified B Corporation™. Infarm’s operating entities are embedded in a holding company, infarm Indoor Urban Farming B.V, which is registered in The Netherlands. For more information, please visit www.infarm.com. https://twitter.com/INFARM_Global https://www.facebook.com/infarm.wearetheinfarmers/ https://www.youtube.com/@INFARM Sales requests: sales@infarm.com Media requests: press@infarm.com
mid stageFarming
Investor, advisory board
May 2015
We help data developers move data from prod environments to analytics and other downstream use cases at scale and with quality oversight. From structured transactional databases to semi-structured interaction event streams, ingest prod data to warehouses and lakes to unlock value. Data generated by your product applications and services is your biggest lever to delivering differentiated product and user experiences. Upsolver helps you extend your business moat by unlocking the full value of your moat data. Because data that’s uniquely yours provides the best looking glass into how your users benefit from your products and services—and what’s lacking.
Experience · 16 entries
All (16)
Investments (11)
Founder (4)
2026
Partner
Jun 2026
At O8 Ventures, we back the pioneers building the future of enterprise, defense, and industrial infrastructure as well as building our own ventures together with people we trust. We dont just invest in the future, we deploy the technologies we champion to identify, evaluate, and scale our portfolio companies. Our Core Pillars: We invest at the early stage, focusing exclusively on massive market opportunities where software meets the physical and strategic world.
2025
Investor
Dec 2025
Sairen is a conversational AI platform that manages customer relationships through AI agents, automating communications and providing a unified monitoring tool to handle all customer interactions from a single omnichannel hub. Built for SMBs and mid-market companies fighting two critical problems: labor costs and fragmented tools/data. Designed for customer-facing teams, addressing the needs of support, sales, marketing, administrative, and compliance teams simultaneously—from one platform combining the power of a ticketing system, phone system, marketing automation tool, and analytics dashboard. Our solutions: 1) Ocean – All channels unified for simple management. Write and respond directly from the platform 2) AI Conversational Agents – Creation, supervision, monitoring, deployment. Automate 70% of conversations 3) Ticketing System – Human-in-the-loop when needed 4) Monitoring System – Full visibility across interactions, locations, teams, and agents 5) Ulysse – Workflow builder to automate entire customer journeys and... Rainbow - our next product ;) big announcement yet to come. We help major companies like Best Western, Clinique des Champs Elysés and Hartmann Healthcare Group save time and money, differentiate the customer experience, and accelerate revenue growth.
Investor
Jul 2025
Ensemble is building the trustless operating layer for AI agents and humans to work, transact, and scale together. AI agents are rapidly emerging as the next wave of internet infrastructure - powering research, trading, content, governance, and collaboration. But today, the ecosystem is fragmented: agents struggle with discovery, trust, payments, and interoperability. Ensemble solves this by providing: - Agent Hub – a marketplace where agents can be discovered, compared, and monetized. - Cross-chain payments – instant, verifiable, and trustless transactions between humans and agents. - Verification & reputation – ensuring agents are reliable, auditable, and secure. - Framework-agnostic integration – compatible with Eliza OS, Virtuals, LangChain, and beyond. Beyond infrastructure, we’re also building specialized agents that help companies and organizations engage, educate, and onboard their communities - making it easier to turn new users into long-term contributors and advocates. Our mission is to unlock the full potential of autonomous collaboration by making AI agents not just tools, but service providers that can be trusted, paid, and scaled. We’re already partnering with leading infra providers, and agent ecosystems to make this future real. 👉 If you’re building in AI or community growth - and want to explore how agents can power your organization - let’s connect: Contact us: hello@ensemble.codes
Elpida
President, investor
May 2025
early stage
Show all 16 entries ↓
Investment activity
2015–2026 · 11 investments
201512016120202202122025420261
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