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SPECIFICTION
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Klustercost vs Untab

Klustercost

klustercost.cloud

Untab

untab.io

Side by side

FigureKlustercostUntab
Price fromFree$100/mo
Free planYes—
Free trial——
Open source——
WebYesYes
APIYes—
Self-hostedYes—
Plans published14
Spec score · Kubernetes Cost Management Software7.8 (#6)7.0 (#20)
DeploymentA Helm chart deploys the monitor, pricing service, database, and optional AI layer.The Untab agent can be installed with a basic Kubernetes manifest or Helm charts.
IntegrationsThe site lists WhatsApp, Teams, Slack, Power BI, HTTP API, and MCP protocol access.The documentation describes AWS and Google Cloud Platform billing integrations; provider setup is optional.
PurposeKlustercost provides Kubernetes cost visibility by application, monitoring pods and pricing nodes.Untab helps users understand the cost of Kubernetes applications and reduce infrastructure spending.

Plans

Klustercost

  • Open sourceFree

Klustercost pricing →

Untab

  • Small$100 a month
  • Medium$500 a month
  • Large$1,000 a month
  • EnteprisePriced on request

Untab pricing →

In their own words

Klustercost

Klustercost gives Kubernetes users cost visibility by workload, monitoring pods and assigning prices to nodes. Its Go-based observers use Kubernetes informers and Prometheus to track pods, nodes and namespaces in real time. Pod and node data is stored in PostgreSQL every 10 minutes, and nodes are enriched with hourly virtual-machine costs from Azure retail pricing APIs.

Users can ask questions in plain English and receive natural-language answers with structured JSON; the site describes these AI queries as read-only. Access options include WhatsApp, Teams, Slack, Power BI, an HTTP API and MCP protocol. A Helm chart deploys the monitor, pricing service, database and optional AI layer. The project is open source under GPL-3.0 and its plan is free. Setup requires a running Kubernetes cluster, Helm 3.x, reachable Prometheus, Metrics Server and a StorageClass. Azure cost enrichment is supported; AWS and GCP support are planned. Natural-language queries through the MCP assistant require an OpenAI API key.

Visit klustercost.cloud

Untab

Untab has no write-up on Specifiction yet; its figures are above.

Visit untab.io