ROI & TCO calculators — model your platform economics

Free calculators for platform TCO, cloud repatriation, hosting unit economics, a VMware exit and GPU ROI on Cozystack. Model your own numbers.

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Interactive calculators for the economics of running your own cloud platform. Compare five-year TCO against ten on-prem platforms, price a hyperscaler bill against your own hardware, size the unit economics of a hosting business, or weigh owning GPUs against renting them. Every input is editable, the three full models carry a source and a date on every price, and every result recomputes live — built by Ænix, which created Cozystack.

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Platform TCO — Cozystack vs 10 on-prem platforms

The full model: five-year total cost of ownership against VMware (VCF / VVF / vSphere), Nutanix, OpenShift (OVE and Container Platform), Proxmox VE, OpenStack, CloudStack, OpenNebula, Harvester, Rancher and Virtuozzo. Three cost articles — software, one-time migration, personnel. Every default price carries its source, date and nature (vendor list, third-party, derived, owner estimate), and each comparison states where the other platform wins.

Open TCO calculator → Methodology and sources →

Per-platform breakdowns: vs VMware · vs Nutanix · vs OpenShift · vs Proxmox · vs OpenStack · vs CloudStack · vs OpenNebula · vs Harvester · vs Rancher · vs Virtuozzo

Cloud repatriation — hyperscaler bill vs your own hardware

Already on AWS, Azure or GCP. Price the same workload footprint — vCPU, RAM, block and object storage, managed Kubernetes, databases, GPUs, egress, cross-AZ — against running it on Cozystack on owned or rented hardware, with commitment and enterprise discounts on the cloud side and hardware, power, PUE, colocation and operations staffing on yours.

Open repatriation calculator → Get the worksheet →

VMware exit — quick estimate

A four-input sanity check on a VMware/VCF renewal: annual saving, three-year net, migration payback. For the sourced five-year model with quote sensitivity, use Cozystack vs VMware above.

VMware-exit savings calculator

Licensed CPU cores (VMware/VCF) What you pay Broadcom today, per core/year (USD) Physical servers (nodes) Ænix support tier (per 10 nodes) VMs to migrate

VMware cost per year (today)—

Ænix support per year—

One-time migration (estimate)—

Net saving per year—

Net saving over 3 years (after migration)—

Migration payback—

Illustrative, in USD. Ænix support from the price list, per 10 physical nodes per month, billed annually; migration: indicative figure from our TCO methodology ($8,000 setup + $140 per VM); final quote after scoping. Hardware, staff and a build project are not included. Pricing · Methodology

Hosting-provider unit economics

If you sell managed cloud to your own customers, our full ISP unit-economics calculator models the monthly P&L — infrastructure footprint, service portfolio (managed Kubernetes, VMs, databases, GPU, object storage), capacity utilization, staffing and payback — with multi-currency support and a one-click PDF report.

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See the Public Cloud Platform for the product behind this model.

GPU / AI-inference ROI

Owning GPUs on your own platform versus renting equivalent GPU capacity in the cloud — with utilization driving the effective cost per GPU-hour.

GPU ROI: own GPUs vs. cloud rental

Compare the monthly cost of owning GPUs on Cozystack against renting equivalent GPU capacity in the cloud. Every input is editable.

Number of GPUs Capex per GPU (incl. server share) (€) Amortization (months) Hosting per GPU/month (colo, power, ops) (€) Utilization (%) Cloud rental price per GPU/month (€)

Owned GPUs: cost / month—

Cloud rental: cost / month—

Saving / month—

Effective cost per GPU-hour (owned, at utilization)—

Net saving over the amortization period—

Capex payback—

Illustrative. Owned cost/month = amortized capex + hosting (can exceed rental during the amortization period). Capex payback measures operational cash recovery (rental avoided − hosting) and excludes amortization — once amortization ends you own the cards and pay only hosting. Cloud rental is paid regardless of utilization.

See the AI Platform and Sovereign AI.

How these calculators work

Two kinds of tool: the TCO, repatriation and ISP calculators are full models — every price carries a source and a date, the assumptions are editable, and each produces a PDF report you can hand to finance. The VMware-exit and GPU blocks on this page are quick four-input estimates, useful for a first sanity check and nothing more.
What they are: free, editable estimators built by Ænix for the economics of running a cloud platform on an open foundation; not affiliated with VMware/Broadcom.
Who they’re for: infrastructure, finance and procurement teams scoping a platform build, a VMware exit, a hosting business, or a GPU investment.
The target platform: Cozystack, Apache 2.0 — no per-core/per-socket licence. You pay for support and/or the build.
Common pitfall: comparing licence-to-licence only, and ignoring migration cost, staffing, and the workloads that should stay put.

Turn the numbers into a plan

A discovery call turns these estimates into an honest, workload-level TCO — including what to keep where it is.

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Ænix created Cozystack, a CNCF project and CNCF Certified Kubernetes distribution, and maintains it with maintainers from other companies. Ænix sells three platforms built on it — Public Cloud, Private Cloud and AI — plus support and services.

Frequently asked questions

Are these calculators official pricing?

No. They are free estimators built by Ænix, not affiliated with VMware/Broadcom or any other vendor, to help you model platform economics with your own inputs. Ænix list prices are on the pricing page. For a firm quote, book a discovery call and we build a workload-level TCO with you.

What platform do the savings assume?

The target platform is Cozystack — a CNCF project, Apache 2.0, with no per-CPU or per-socket licence. You pay for support and/or the build engagement, both editable in the calculators.

Do I have to move everything to realise the numbers?

No. Savings apply to the workloads that actually move or that you actually build on the platform. Some workloads should stay where they are; a discovery call sorts out which.

How accurate are the defaults?

The defaults are realistic mid-market starting points, not your numbers. Replace every field with your own figures — the outputs recompute live and are only as good as the inputs.