CAST AI vs OpenFaaS
CAST AI
cast.aiOpenFaaS
openfaas.comSide by side
| Figure | CAST AI | OpenFaaS |
|---|---|---|
| Price from | — | $1,250/mo |
| Free plan | — | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| API | — | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 3 |
| Spec score · Auto Scaling Software | 7.5 (#8) | 8.3 (#2) |
| Intended users | CAST AI identifies platform, SRE, and FinOps teams among the teams using its Kubernetes optimization and cost-control tools. | The pricing page describes CE for personal use, hobbyists, and experimentation, Standard for a single team or tenant, and Enterprise for large organisations and SaaS teams. |
Plans
OpenFaaS
- Community Edition (CE)Free
- OpenFaaS Standard$1,250 a month
- OpenFaaS for EnterprisesPriced 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.