CAST AI vs Untab
CAST AI
cast.aiUntab
untab.ioSide by side
| Figure | CAST AI | Untab |
|---|---|---|
| Price from | — | $100/mo |
| Free plan | — | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 1 | 4 |
| Spec score · Kubernetes Cost Management Software | 7.7 (#8) | 7.0 (#20) |
| Company | CAST AI’s about page names Leon Kuperman, Laurent Gil, and Yuri Frayman as co-founders. | The site identifies the maker as Untab Inc. and lists Vancouver, BC, Canada as its address. |
| Integrations | The integrations page lists Grafana, Terraform, Crossplane, Prometheus, Jira, OpenTelemetry, Helm, and Pulumi. | The documentation describes AWS and Google Cloud Platform billing integrations; provider setup is optional. |
Plans
Untab
- Small$100 a month
- Medium$500 a month
- Large$1,000 a month
- EnteprisePriced on request
In their own words
CAST AI
CAST AI is an Application Performance Automation platform for cloud-native operations and Kubernetes automation. It automates workload rightsizing, node scaling, GPU and Spot optimization, and issue remediation. Rightsizing adjusts CPU and memory requests, limits, and replicas in response to workload behavior. The platform says its engine can predict Spot interruptions up to 30 minutes ahead and migrate workloads before a slowdown. Agentic runbooks can address operational and security issues, with approval required for each change before it ships.
Teams can connect clusters in read-only mode without infrastructure changes. Listed environments include AWS, Google Cloud, Azure, Oracle Cloud, IBM Cloud, OpenShift, Rancher, VMware Tanzu, AliCloud, kOps, PostgreSQL, MySQL, and on-prem Kubernetes. Cost tools include allocation, spend forecasting, rightsizing guidance, and commitment management. CAST AI integrates with tools including Grafana, Terraform, Prometheus, Jira, and Pulumi. It is available on the web and as self-hosted software. Pricing is custom and available on request; a free trial is available.