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CloudZero vs Cast AI
CloudZero and Cast AI are cloud cost tools, which help companies cut and track what they spend on cloud services such as AWS, Azure and Google Cloud. Our editors read both companies' own sites, then read what FinOps and platform engineers say about the two tools in public reviews, community boards and chat forums. The table below compares price, limits and features.
| What buyers compare | CloudZero | Cast AI |
|---|---|---|
| Price per monthSources 3, 4 | Quote. One subscription with every capability, sized to your cloud and AI spend | Quote, based on your clusters, GPU use and products |
| How usage is countedSources 3, 4 | Unlimited cost sources, users, dimensions and dashboards | Not published |
| Seats and usersSources 3, 4 | Unlimited users | Not published |
| Integrations and featuresSources 3, 4 | AWS, Azure, Google Cloud, Kubernetes, Databricks, Datadog, OpenAI, Anthropic, Cursor and more. MCP integration | Products for Kubernetes workload optimization, cluster optimization (standard or Karpenter), GPU, database and storage optimization |
| Security and deploymentSources 3, 4 | Role-based access control and organization management | Not published |
| Best forSources 1, 2 | Finance and engineering leaders who need cost per customer or feature across AWS, Azure, Google Cloud, Kubernetes and growing AI bills | Platform, SRE and FinOps teams with large Kubernetes clusters that will let software resize workloads and choose nodes automatically |
List prices in US dollars per month before tax, as published on each vendor's site on October 16, 2026, billed monthly unless the cell says otherwise. "Quote" means the vendor sets the price through its sales team. A green check marks a row where the published data shows a clear edge.
Which one fits
Cast AI changes your Kubernetes clusters to cut cost, while CloudZero shows where the money goes, so many teams use one of each kind.
Choose CloudZero if
- You need to see cost per customer, feature or team across AWS, Azure, Google Cloud and Kubernetes.
- Your AI bills are growing. CloudZero connects to OpenAI, Anthropic, Cursor and Databricks alongside the cloud providers.
- You want every feature in one contract. CloudZero sells a single subscription with unlimited users and cost sources.
Choose Cast AI if
- You run a lot of Kubernetes and are willing to let software resize workloads and swap nodes automatically.
- You run GPU workloads. Cast AI sells a separate GPU optimization product.
- You already use Karpenter. Cast AI offers cluster optimization built for it.
What buyers say
“CAST AI is better if most of the waste is Kubernetes nodes and you want autoscaling/spot automation. CloudZero is better if finance needs unit economics and Slack/Jira cost stories.”
BlackPlot · HN · · source
“CloudZero for the “where did the money go” view across clouds. CAST AI when you actually want the cluster to resize itself, not just another dashboard.”
ladvey · r/FinOps · · source
“CloudZero gave finance cost per customer and per feature across our clouds and AI providers. Cast AI cut our Kubernetes bill, but we had to be comfortable letting software resize workloads and swap nodes.”
FinOps lead, Series C SaaS company
Representative buyer view
Verdict
CloudZero (8.1 out of 10, Recommend) is for finance and engineering leaders who need to see cost per customer, feature or team across AWS, Azure, Google Cloud, Kubernetes and AI providers such as OpenAI and Anthropic. Cast AI (7.1 out of 10, Conditional recommend) is for platform teams running a lot of Kubernetes who will let software resize workloads and swap nodes to cut the bill.
Methodology
We read the CloudZero and Cast AI pricing pages and product sites on October 16, 2026 and recorded every published price, limit and plan feature. A cell reads "Not published" when the vendor does not state that detail on its site, and rows where neither vendor publishes anything were left out.
Scores, best-fit notes and buyer quotes come from the AIR reviews of each product, which weight practitioner reviews at 40%, hands-on product checks at 35%, pricing at 15% and docs at 10%. Paid reviews and pay-for-play sites are excluded. Quotes marked Representative buyer view are written by AIR to reflect buyer feedback and carry no source link.