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Cloud · head to head

Proxmox VE vs Vellum

Proxmox VE logo

Proxmox VE

Cloud

Open-source hypervisor combining KVM and LXC virtualisation

From
€120/year
Free plan
No
Full reviewWebsite
Vellum logo

Vellum

AI

Personalized AI assistant with persistent memory and autonomous action-taking

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Only Vellum has a free tier, so it costs nothing to try first.
  • Each has a real cost: Proxmox VE per-socket licensing model: cost scales with CPU socket count, not vCore count, resulting in high costs for multi-socket servers; Vellum pricing varies significantly by computational tier, making budget planning difficult
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Proxmox VE and Vellum actually diverge.

Attributes where Proxmox VE and Vellum differ
AttributeProxmox VEVellum
Starting price€120/yearFree
Pricing modelsubscriptionFreemium with paid plans and pay-as-you-go credits
Free tierNoYes
PlatformsLinux, Web, API, Self-hostedWeb, macOS, iOS, Slack, Telegram, Terminal
CategoryCloudAI

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Proxmox VE

Nothing recorded that Vellum does not also cover.

Only in Vellum

  • Persistent AI identity
  • Long-term memory
  • Email automation
  • Calendar management
  • Autonomous task execution
  • Multi-device synchronization
  • Custom plugins
  • Open-source deployment

What people use each for

The jobs each tool is most often brought in to do.

Proxmox VE

  • Open-source datacenter virtualisation for hosting providers and cloud platformsnot Vellum
  • Cost-sensitive enterprise virtualisation replacing commercial hypervisorsnot Vellum
  • High-availability clustering for disaster recovery and business continuitynot Vellum
  • Container deployments using LXC as lighter-weight alternative to Dockernot Vellum
  • Hybrid VM and container workloads in a single management interfacenot Vellum
  • Backup and archival infrastructure alongside primary virtualisationnot Vellum

Vellum

  • Personal productivity automation across email and calendarnot Proxmox VE
  • CRM updates and pipeline managementnot Proxmox VE
  • Expense report generation and managementnot Proxmox VE
  • Document drafting and content creationnot Proxmox VE
  • Meeting scheduling and calendar coordinationnot Proxmox VE

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Proxmox VE

  • Per-socket licensing model: cost scales with CPU socket count, not vCore count, resulting in high costs for multi-socket servers
  • Linux-based host only; Windows hypervisors not supported, limiting adoption in Windows-focused organisations
  • Clustering and high-availability setup requires operational expertise and careful network configuration
  • Commercial support tiers limit advanced features (just-in-time access, network flow logs) to paid subscriptions
  • Smaller ecosystem of third-party plugins and integrations compared to VMware vSphere

Vellum

  • Pricing varies significantly by computational tier, making budget planning difficult
  • Requires explicit permission for sensitive actions, limiting autonomy
  • Self-hosting option may intimidate non-technical users
  • Learning curve to develop customizations with plugins

Pricing, plan by plan

Proxmox VE

€120/year
  • Community$120/year
    • Enterprise Repository access
    • Community forum support only
    • Per-socket subscription model
  • Basic$370/year
    • 3 support tickets per year
    • 1 business day response time
    • Stable updates and Enterprise Repository
  • Standard$550/year
    • 10 support tickets per year
    • 4-hour response time for critical issues
    • Remote SSH support and offline updates
  • Premium$1100/year
    • Unlimited support tickets
    • 2-hour response time for critical issues
    • Remote SSH support and offline updates

Vellum

Free
  • FreeFree
    • Starter credits included
    • Basic features
  • Mighty$30/month
    • 1 vCPU, 2 GiB RAM
    • 10 GB storage
    • Included usage allowance
  • Super$100/month
    • 2.5 vCPU, 5 GiB RAM
    • 30 GB storage
    • Assistant email and subdomain
  • Ultra$200/month
    • 4 vCPU, 8 GiB RAM
    • 60 GB storage
    • Assistant email and subdomain

Which should you pick?

Choose Proxmox VE if

  • You work on Linux, Web, API, Self-hosted.
Proxmox VE review

Choose Vellum if

  • You need persistent ai identity.
  • You want to start without paying.
  • You work on Web, macOS, iOS, Slack, Telegram, Terminal.
  • You also want long-term memory.
Vellum review

Questions people ask

Is Proxmox VE or Vellum better?
Neither clearly leads. Proxmox VE starts at €120/year and Vellum at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Proxmox VE or Vellum?
Vellum has a free tier; the other does not. Paid plans start at €120/year for Proxmox VE and Free for Vellum.
Does Proxmox VE or Vellum run on more platforms?
Proxmox VE runs on Linux, Web, API, Self-hosted. Vellum runs on Web, macOS, iOS, Slack, Telegram, Terminal.
Can I use Vellum for free?
Yes. Vellum has a free tier, so you can try it without paying. Proxmox VE starts at €120/year.
What is Proxmox VE best used for?
Proxmox VE is most often used for open-source datacenter virtualisation for hosting providers and cloud platforms, cost-sensitive enterprise virtualisation replacing commercial hypervisors, high-availability clustering for disaster recovery and business continuity, container deployments using lxc as lighter-weight alternative to docker. Of those, open-source datacenter virtualisation for hosting providers and cloud platforms and cost-sensitive enterprise virtualisation replacing commercial hypervisors are not what Vellum is typically brought in for.
What can Proxmox VE do that Vellum cannot?
Vellum covers Persistent AI identity, Long-term memory, Email automation, Calendar management.

Answered from the vendors’ own pages

Proxmox VE: What is the licensing model for Proxmox VE?

Proxmox VE is open-source and free to deploy. Optional subscription tiers provide technical support, priority response times, and access to the Enterprise Repository for stable update channels. All tiers include identical virtualisation features.

Source
Vellum: How does Vellum protect my data privacy?

Vellum uses permission-based controls requiring explicit approval for sensitive actions. Data is encrypted and the option for self-hosting provides complete data control. Open-source deployment option allows hosting on your own infrastructure.

Source
Proxmox VE: Can I run Proxmox VE without a support subscription?

Yes. Community Edition (€120/year per socket) provides Enterprise Repository access with community-based support through forums. The core Proxmox VE platform is fully functional without any subscription.

Source
Vellum: Can I use Vellum for business team collaboration?

Vellum is primarily designed as a personal assistant with persistent identity. For team collaboration, platforms like Lindy offer better multi-user features with shared credit pools and Slack workspace integration.

Source
Proxmox VE: What hypervisors does Proxmox VE support?

Proxmox VE includes both KVM for full virtualisation and LXC for Linux containers. It does not support Xen or Hyper-V. Workloads on those platforms must be migrated or reimplemented.

Source
Vellum: What does the free tier include?

Vellum offers free starter credits to begin using the platform. Beyond that, it operates on a pay-as-you-go credit model with paid tiers starting at $30/month for increased computational resources and bundled credits.

Source
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