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CAST AI vs Atlantis Comparison

Last updated:

CAST AI

5.0(5 reviews)

Starting at Contact for pricing

  • Free Trial
  • Large Enterprises
  • Medium Business

CAST AI is a Kubernetes cost optimization platform for DevOps and cloud infrastructure teams running containerized workloads on AWS, GCP, or Azure. It automatically rightsizes nodes, manages spot instance fallback, and s…

Atlantis

4.5(290 reviews)

Starting at Free free

  • Small Business
  • Mid-Market

Atlantis is an open-source Terraform pull request automation tool that runs Terraform plan and apply operations from GitHub, GitLab, and Bitbucket pull requests. When a PR is opened touching Terraform files, Atlantis aut…

CAST AI leads on user satisfaction with a 5.0-star rating across 5 reviews.

CAST AI vs Atlantis — at a glance

FeatureCAST AIAtlantis
Rating5.0 / 54.5 / 5
Reviews5290
Starting priceContact for pricingFree free
Free trial Yes No
Free version No No
Best forLarge Enterprises, Medium Business, Small BusinessSmall Business, Mid-Market, Enterprise
CategoryCloud Management PlatformCloud Management Platform
PlatformsSaaS/Web/CloudOn-Premise, Linux, Cloud
APIAvailable
Support modesOnlineGitHub Issues, Community Slack, Documentation
CertificationsSOC 2, GDPR
Data residencyGlobal

Key differences between CAST AI and Atlantis

  • Pricing: Atlantis starts at Free free. CAST AI pricing is not publicly listed.
  • Free trial: CAST AI offers a free trial; Atlantis does not.
  • Target audience: CAST AI is built for Large Enterprises and Medium Business, while Atlantis targets Small Business and Mid-Market.
  • User satisfaction: CAST AI scores higher with a 5.0-star average.
  • Deployment: CAST AI supports SaaS/Web/Cloud; Atlantis supports On-Premise, Linux, Cloud.

CAST AI vs Atlantis — find the better fit before you commit.

01

Which tool fits your team best

02

Which is actually cheaper for your team size

03

Where each product wins, per real buyers

Most Cloud Management Platform tools look identical on paper. This comparison cuts to the differences that matter — pricing structure, team fit, and what real buyers found after signing up.

CAST AI - Cloud Management Platform
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CAST AI vs Atlantis: Biggest differences

Start here before you go deeper into features.

CAST AI

Best for

Large Enterprises, Medium Business, Small Business

Atlantis

Best for

Small Business, Mid-Market, Enterprise

CAST AI typically suits Large Enterprises and Medium Business. Atlantis tends to fit Small Business and Mid-Market better. The right choice depends on your team size, workflow, and whether a free trial matters.

Description

CAST AI is a Kubernetes cost optimization platform for DevOps and cloud infrastructure teams running containerized workloads on AWS, GCP, or Azure. It automatically rightsizes nodes, ... Read More about CAST AI

Atlantis is an open-source Terraform pull request automation tool that runs Terraform plan and apply operations from GitHub, GitLab, and Bitbucket pull requests. When a PR is opened ... Read More about Atlantis

Entry Level Pricing

  • Not Available
  • Starts from Free

Free Trial Availability

  • No free trial

SpotScore

What's this? ↗

8.1/10

9.0/10

User Ratings

Based on verified Spotsaas reviews
Get pricing help
Get pricing help

Where each option fits best

See where each product is strongest, which teams it fits, and what causes buyers to keep looking — before you commit.

Based on buyer reviews and verified product data collected by Spotsaas.

Strengths

Key strengths

CAST AI

No key benefits available yet.

Atlantis

  • Terraform Review in the Code Review: Plan output in PR comments means reviewers see infrastructure changes alongside code changes — keeping IaC review in the existing GitHub workflow.
  • Zero State Corruption: Workspace locking serializes applies — only one apply runs per workspace at a time, preventing the concurrent-apply state corruption that plagues team Terraform.
  • Audit Trail in Git: Every plan and apply is tied to a PR, commit, and GitHub user — complete audit history of who changed what infrastructure and when.
Best fit

Best fit

CAST AI

No best-fit guidance available yet.

Atlantis

  • DevOps teams implementing Terraform PR workflows without the operational overhead of Terraform Cloud or managed platforms
  • Engineering teams preventing concurrent Terraform state corruption through workspace locking in multi-engineer environments
  • Platform teams providing developers self-service infrastructure deployment via PR-comment-driven apply without giving direct Terraform access

Software Demo

Demo

No software demo available

CAST AI has not given any software demo yet

If you're the owner of this profile, add your demo.Contact us

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Step 1 of 4

How big is your team?

We tailor recommendations to companies your size.

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How do CAST AI and Atlantis Compare on Features?

Total Features

7 Features

3 Features

Unique Features

No unique features

No unique features

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Compare CAST AI and Atlantis on pricing

Review starting price, plan structure, and free-trial access side by side so you can see which option fits your budget and buying process.

Pricing Option

      Starting From

      • Not Available
      • Free

      Pricing Plans

      • Not Available
      • Open Source

        Free

        • Full features

        • Apache 2.0

        • Self-hosted

        Show more +

      Pricing Page

      CAST AI pricing

      Pricing information not available

      CAST AI vs Atlantis: Other Details

      Organization Types supported

      • Small Business
      • Large Enterprises
      • Medium Business
      • Freelancers
      • Individuals
      • Small Business
      • Large Enterprises
      • Medium Business
      • Freelancers
      • Individuals

      Platforms Supported

      • Browser Based (Cloud)
      • Installed - Windows
      • Installed - Mac
      • Browser Based (Cloud)
      • Mobile - Android
      • Browser Based (Cloud)
      • Installed - Windows
      • Installed - Mac
      • Browser Based (Cloud)
      • Mobile - Android

      Modes of support

      • 24/7 (Live rep)
      • Business Hours
      • Online
      • 24/7 (Live rep)
      • Business Hours
      • Online

      API Support

      • Not Available
      • Available
      Get help choosing
      Get help choosing

      CAST AI vs Atlantis Security & Compliance

      Certifications, data handling, and security controls for IT and compliance evaluators.

      SOC 2

      ✓ Yes

      GDPR

      ✓ Yes

      Single Sign-On (SSO)

      ✓ Yes

      Multi-Factor Auth (MFA)

      ✓ Yes

      Data Encryption

      ✓ Yes

      Audit Logs

      ✓ Yes

      Data Residency

      🌐 Global

      CAST AI User Reviews & Rating Comparison

      User Ratings

      4.5

      (based on 290 reviews)

      Rating Distribution

      5

      0

      0

      0

      0

      0

      0

      0

      0

      0

      Spotsaas Editor’s POV generated by AI

      Buyer sentiment

      Buyer sentiment is very strong across 5 reviews, with consistently positive feedback.

      What buyers like

      • 60% average cost savings
      • Fast autoscaling
      • Spot VM support

      Common complaints

      • Limited to Kubernetes
      • Requires cloud infrastructure
      • May need technical expertise

      Buyer sentiment

      Buyer sentiment is very strong across 290 reviews, with consistently positive feedback.

      What buyers like

      • Free and open-source (Apache 2.0) with thousands of production deployments — the most battle-tested Terraform PR automation workflow available.
      • PR-comment-driven workflow (`atlantis plan`, `atlantis apply`) is simple, auditable, and requires no new UI to learn — all workflow happens in the existing code review process.
      • Workspace locking prevents concurrent applies to the same Terraform workspace — the most common cause of Terraform state corruption in team environments.

      Common complaints

      • Self-hosted only — requires a server to run Atlantis and webhook configuration for each repository, with ongoing maintenance responsibility.
      • Does not scale as cleanly as managed platforms for very large numbers of stacks — teams with 100+ stacks often outgrow Atlantis and move to Spacelift or Terraform Cloud.

      Pros and Cons

      • Significant cost reduction for Kubernetes workloads.

      • Seamless integration with existing cloud setups.

      • User-friendly interface for quick onboarding.

      • Best suited for Kubernetes environments only.

      • May require some technical knowledge.

      • Free and open-source (Apache 2.0) with thousands of production deployments — the most battle-tested Terraform PR automation workflow available.

      • PR-comment-driven workflow (`atlantis plan`, `atlantis apply`) is simple, auditable, and requires no new UI to learn — all workflow happens in the existing code review process.

      • Workspace locking prevents concurrent applies to the same Terraform workspace — the most common cause of Terraform state corruption in team environments.

      • Self-hosted only — requires a server to run Atlantis and webhook configuration for each repository, with ongoing maintenance responsibility.

      • Does not scale as cleanly as managed platforms for very large numbers of stacks — teams with 100+ stacks often outgrow Atlantis and move to Spacelift or Terraform Cloud.

      Positive Reviews

      No reviews available for the product

      No reviews available for the product

      Used CAST AI or Atlantis? Tell buyers what actually differs.

      Top Alternatives to CAST AI and Atlantis in 2026

      Alternatives

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      Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].

      Frequently asked questions

      Which is better, CAST AI or Atlantis?
      CAST AI edges out the other on user ratings (5.0 vs 4.5). That said, the best pick depends on your use case — use the comparison tables above to evaluate each dimension.
      Do CAST AI and Atlantis offer a free trial?
      CAST AI offers a free trial. Atlantis does not.
      What is the starting price of CAST AI vs Atlantis?
      CAST AI starts at Contact for pricing. Atlantis starts at Free free.
      What are the top alternatives to CAST AI?
      Top alternatives to CAST AI include nOps, IBM Cloud Pak for Watson AIOps, Klouds.io, Kubecost, Cube Cloud.