The most expensive part of a cloud machine is the time it spends idle. The most valuable part is the state it holds in memory. Boxd, a Dutch infrastructure startup, is betting its custom virtualization engine can solve both problems at once, offering developers and AI coding agents persistent, hardware-isolated Linux virtual machines that can be forked in under 100 milliseconds [Tech.eu, September 2026].
This is not another ephemeral container service. The company's core proposition is a machine that remembers everything,running processes, open files, shell state,between sessions, hibernates when idle to save cost, and can be instantly cloned, memory and all, to create parallel environments [boxd - Composable computers]. The goal is to move complex development and testing workflows out of local environments and disposable cloud sandboxes and into what co-founder Laurentiu Ciobanu calls "computers in the cloud" [StartupCafe.ro, October 2026].
The wedge: stateful forking
Boxd's technical wedge is live-forking speed. Where recreating a containerized environment might require rebuilding an image and restarting processes, Boxd claims it can create a full copy of a running machine, including its memory state and active network connections, in less than 100 milliseconds [PERPLEXITY SONAR PRO BRIEF]. The original machine continues running undisturbed.
This capability is engineered for parallelism. A developer could fork a live environment to test a speculative change without breaking their main workspace. More pointedly, an AI coding agent operating within a Boxd machine could spawn multiple copies to attempt different implementation strategies simultaneously, with each fork inheriting the exact context of the project. The platform supports use cases from development workspaces and preview environments to continuous integration runners [boxd - Composable computers].
Why now: the agent compute problem
The timing aligns with the rise of autonomous coding agents. These systems, which can plan and execute software tasks, traditionally operate in short-lived, stateless sandboxes. Each interaction starts from a clean slate, which is secure but inefficient for complex, multi-step work. Boxd is positioning its persistent VMs as the necessary infrastructure for more sophisticated agents that need to maintain context over time.
"In loc să construim o închisoare pentru un agent, îi facem o grădină, un gărduleț," Ciobanu told a Romanian outlet, translating to, "Instead of building a prison for an agent, we make it a garden, a little fence" [StartupCafe.ro, October 2026]. The metaphor points to providing a secure, isolated space where an agent can work persistently, rather than a locked-down cell it is ejected from after each task. Investors including BlueYard Capital, OVNI Capital, and Antler backed that vision with a $2 million pre-seed round in September 2026 [Tech.eu, September 2026].
The team and technical build
The founding team of Michiel Voortman, Laurentiu Ciobanu, and Hidde Kehrer is building a custom stack to deliver these guarantees. Public team updates show a focus on core virtualization and systems engineering. In one member's first two months, they shipped scheduled disk backups end-to-end, allowing every machine to be restored to a point in time [Radu Negulescu - Information isn’t data... | LinkedIn]. Another team member, Alexandru Jonny Şerban, previously built embedded hardware with Ciobanu, suggesting a hardware-aware approach to virtualization [Radu Negulescu - Information isn’t data... | LinkedIn].
The company's published pricing model is granular and consumption-based, charging separately for vCPU, RAM, and disk while a machine is running, with costs dropping to near-zero during hibernation [Pricing - boxd]. This aligns with the promise of only paying for active compute.
| Founding Team | Noted Background / Contribution |
|---|---|
| Michiel Voortman | Co-founder [LinkedIn, retrieved 2026]. |
| Laurentiu Ciobanu | Co-founder; articulated "garden not prison" agent metaphor [StartupCafe.ro, October 2026]. |
| Hidde Kehrer | Co-founder [LinkedIn, retrieved 2026]. |
| Alexandru Jonny Şerban | Team member; shipped disk backup system; prior embedded hardware work [Radu Negulescu - Information isn’t data... |
| Stefan Ghegoiu | Experienced Software Engineer at Boxd [Stefan Ghegoiu - boxd |
The competitive landscape
Boxd enters a niche but growing segment of developer infrastructure focused on stateful, agent-friendly compute. Its most direct comparisons are companies like E2B and sprites.dev, which also target the coding agent runtime space. The competitive differentiation rests on Boxd's emphasis on hardware isolation,provaining full VM security,and the sub-100-millisecond live-forking of a persistent state.
The company's early positioning suggests it is not trying to compete with massive-scale cloud compute commoditization. Instead, it is optimizing for a specific workflow: stateful, interactive, and parallelizable development work. The bet is that the overhead of maintaining full VMs is justified by the flexibility and speed of manipulating them as mutable, composable objects.
What could go wrong at scale
The technical promise is compelling, but scaling a custom virtualization layer presents known challenges. The performance claims around sub-millisecond wake-from-hibernate and sub-100-millisecond forking are benchmarks that must hold under heterogeneous workloads and multi-tenant pressure [boxd vs sprites.dev: two bets on persistent agent compute - boxd]. Latency variability is the enemy of developer tool adoption.
Furthermore, the business model depends on high utilization. While hibernation minimizes idle costs, the unit economics rely on machines being actively forked and used, not just persisted. Convincing teams to redesign workflows around forkable state, rather than rebuilding from declarative configuration, is a non-trivial behavior change. The market for AI agent compute, while growing, is still nascent and unproven at enterprise scale.
Boxd's answer will be to prove that its machines are not just feasible but fundamentally better for a class of work that is becoming more common. The $2 million pre-seed is a vote of confidence to build that case. The next twelve months will be about moving from a technical showcase to documented production use, showing that these composable computers can indeed become the default garden for a new generation of tools.
Sources
- [Tech.eu, September 2026] Boxd raises $2M to build cloud infrastructure for AI coding agents | https://tech.eu/2026/09/16/boxd-raises-2m-to-build-cloud-infrastructure-for-ai-coding-agents/
- [boxd - Composable computers] boxd - Composable computers | https://boxd.sh/
- [StartupCafe.ro, October 2026] VIDEO Românul care a obținut 2 milioane EUR finanțare pentru startup-ul său AI | https://startupcafe.ro/video-roman-2-milioane-euro-finantare-startup-ai-in-loc-sa-construim-o-inchisoare-pentru-un-agent-ii-facem-o-gradina-un-gardulet-108350
- [PERPLEXITY SONAR PRO BRIEF] Perplexity Sonar Pro Brief on Boxd
- [Pricing - boxd] Pricing - boxd | https://boxd.sh/pricing/
- [Radu Negulescu - Information isn’t data... | LinkedIn] Radu Negulescu - Information isn’t data. It’s structural alignment. Building AI that learns without forgetting, knows where to trust itself, and self-corrects. No hacks needed. | https://www.linkedin.com/posts/radunegulescu_information-isnt-data-its-structural-alignment-activity-7254686102587801600--PaV
- [LinkedIn, retrieved 2026] Michiel Voortman - Co-founder boxd | https://nl.linkedin.com/in/michiel-voortman
- [Stefan Ghegoiu - boxd | LinkedIn] Stefan Ghegoiu - boxd | LinkedIn
- [boxd vs sprites.dev: two bets on persistent agent compute - boxd] boxd vs sprites.dev: two bets on persistent agent compute - boxd