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Developer Tools · head to head

PartyKit vs Proxmox VE

P

PartyKit

Developer Tools

Platform for building and deploying realtime multiplayer servers on the edge

From
Free
Free plan
Yes
Full reviewWebsite
Proxmox VE logo

Proxmox VE

Cloud

Open-source hypervisor combining KVM and LXC virtualisation

From
€120/year
Free plan
No
Full reviewWebsite

The short version

  • Only PartyKit has a free tier, so it costs nothing to try first.
  • Each has a real cost: PartyKit documentation and FAQ material on the marketing site is sparse compared to larger realtime platforms.; Proxmox VE per-socket licensing model: cost scales with CPU socket count, not vCore count, resulting in high costs for multi-socket servers
  • Prices and features above were last checked on 29 August 2026.

Where they differ

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

Attributes where PartyKit and Proxmox VE differ
AttributePartyKitProxmox VE
Starting priceFree€120/year
Pricing modelfreemiumsubscription
Free tierYesNo
Platformsweb, apiLinux, Web, API, Self-hosted
CategoryDeveloper ToolsCloud

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 PartyKit

  • Stateful edge servers
  • WebSocket-first API
  • CRDT library compatibility
  • Framework integrations
  • Global edge deployment
  • Custom domains

Only in Proxmox VE

Nothing recorded that PartyKit does not also cover.

What people use each for

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

PartyKit

  • Multiplayer collaborative appsnot Proxmox VE
  • Realtime AI agent backendsnot Proxmox VE
  • Live cursors and presencenot Proxmox VE
  • Collaborative whiteboards and documentsnot Proxmox VE

Proxmox VE

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

Where each one falls short

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

PartyKit

  • Documentation and FAQ material on the marketing site is sparse compared to larger realtime platforms.
  • Commercial free tier requires deploying to the user's own Cloudflare account, adding setup complexity.
  • Storage on the free Individual plan clears every 24 hours, limiting it to prototyping rather than persistent production data.
  • Smaller ecosystem and community than more established realtime infrastructure providers.

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

Pricing, plan by plan

PartyKit

Free
  • IndividualFree
    • Up to 10 live projects
    • Deploy to the global edge platform
    • Storage clears every 24 hours
  • CommercialFree
    • Unlimited projects
    • Custom domains
    • Runs on your own Cloudflare account; pay only Cloudflare usage

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

Which should you pick?

Choose PartyKit if

  • You need stateful edge servers.
  • You want to start without paying.
  • You work on web, api.
  • You also want websocket-first api.
PartyKit review

Choose Proxmox VE if

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

Questions people ask

Is PartyKit or Proxmox VE better?
Neither clearly leads. PartyKit starts at Free and Proxmox VE at €120/year, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, PartyKit or Proxmox VE?
PartyKit has a free tier; the other does not. Paid plans start at Free for PartyKit and €120/year for Proxmox VE.
Does PartyKit or Proxmox VE run on more platforms?
PartyKit runs on web, api. Proxmox VE runs on Linux, Web, API, Self-hosted.
Can I use PartyKit for free?
Yes. PartyKit has a free tier, so you can try it without paying. Proxmox VE starts at €120/year.
What is PartyKit best used for?
PartyKit is most often used for multiplayer collaborative apps, realtime ai agent backends, live cursors and presence, collaborative whiteboards and documents. Of those, multiplayer collaborative apps and realtime ai agent backends are not what Proxmox VE is typically brought in for.
What can PartyKit do that Proxmox VE cannot?
PartyKit covers Stateful edge servers, WebSocket-first API, CRDT library compatibility, Framework integrations.

Answered from the vendors’ own pages

PartyKit: How much does PartyKit cost?

PartyKit is completely free. Both the Individual and Commercial plans have no upfront costs.

Source
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
PartyKit: What is PartyKit's Individual plan?

The Individual plan is free and includes deployment to a global edge platform, support for up to 10 live projects, and is suitable for small projects. Storage is cleared every 24 hours.

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
PartyKit: What is PartyKit's Commercial plan?

The Commercial plan is free but requires deploying to your own Cloudflare account. It includes custom domains, unlimited projects, and you pay only your Cloudflare usage costs.

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
PartyKit: Can I upgrade from Individual to Commercial plan?

Yes, both plans are free but offer different feature sets. The Commercial plan removes project restrictions but requires managing your own Cloudflare infrastructure.

Source
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