Softwr

Developer Tools · head to head

Atlantis vs SentinelOne

Atlantis logo

Atlantis

Developer Tools

Runs Terraform plan and apply from pull request comments, self-hosted and free

From
Free
Free plan
Yes
Full reviewWebsite
SentinelOne logo

SentinelOne

Cybersecurity

Autonomous endpoint protection and response

From
On request
Free plan
No
Full reviewWebsite

The short version

  • Only Atlantis has a free tier, so it costs nothing to try first.
  • Each has a real cost: Atlantis there is no company, no service level agreement and no paid support at any price, and the six maintainers are volunteers with day jobs, which some risk committees will not accept for a component holding production cloud credentials.; SentinelOne enterprise pricing requires contacting sales
  • They diverge on capability: Atlantis covers Pull request plans, SentinelOne covers AI-powered detection.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Atlantis and SentinelOne actually diverge.

Attributes where Atlantis and SentinelOne differ
AttributeAtlantisSentinelOne
Starting priceFreeOn request
Pricing modelOpen source, no licence feesubscription
Free tierYesNo
PlatformsLinux, Docker, Kubernetes, Self-hostedWindows, Macos, Linux, Ios, Android
CategoryDeveloper ToolsCybersecurity
FoundedUnknown2013

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Atlantis

  • Pull request plans
  • Comment driven apply
  • Workspace locking
  • Policy checking
  • Multi-platform webhooks
  • Custom workflows

Only in SentinelOne

  • AI-powered detection
  • Autonomous response
  • Behavioral threat intelligence
  • Root cause analysis
  • Threat hunting automation
  • Ransomware protection
  • Container security
  • Mobile endpoint protection

What people use each for

The jobs each tool is most often brought in to do.

Atlantis

  • Making Terraform review meaningful by putting the actual plan output in front of the approvernot SentinelOne
  • Removing local applies and the credential sprawl that comes with every engineer holding production keysnot SentinelOne
  • Getting pull request driven infrastructure without paying a per-user subscription for a hosted platformnot SentinelOne
  • Enforcing Conftest policies as a blocking check before an apply can runnot SentinelOne

SentinelOne

  • Endpoint detection and responsenot Atlantis
  • AI-powered threat huntingnot Atlantis
  • Cloud workload securitynot Atlantis

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Atlantis

  • There is no company, no service level agreement and no paid support at any price, and the six maintainers are volunteers with day jobs, which some risk committees will not accept for a component holding production cloud credentials.
  • The security surface is inherently sharp, because it is an internet-reachable webhook endpoint that executes applies with privileged credentials, gated by pull request comment authorisation that is coarse next to a real policy engine.
  • It is stateful, holding a working directory and lock database on local disk, so high availability and horizontal scaling are awkward and you own upgrades, webhook plumbing, secret rotation and the host itself.
  • It lacks the features that distinguish the commercial alternatives, with no native drift detection, no cost estimation, no managed state interface and no policy engine beyond the Conftest integration.
  • Terragrunt and monorepo layouts are not first-class, requiring hand-written custom workflows and repository configuration that becomes a growing maintenance burden as the number of repositories increases.

SentinelOne

  • Enterprise pricing requires contacting sales
  • Prices shown for 5-100 workstations may differ for larger deployments
  • Purchases must be made through authorized third-party partners

Pricing, plan by plan

Atlantis

Free
  • AtlantisFree
    • Apache-2.0, no usage limits and no seat count
    • No commercial edition and no paid support tier
    • Community support through GitHub and the CNCF Slack channel

SentinelOne

On request
  • Singularity Complete$179.99/year
    • Per endpoint pricing
    • AI-driven endpoint and cloud workload protection
    • Real-time threat detection and response
  • Singularity Commercial$229.99/year
    • Per endpoint pricing
    • All Complete features plus Identity Detection and Response
    • 90-day data retention
  • Singularity Enterprise$null/custom
    • Per endpoint pricing
    • All Commercial features plus Agentic AI SOC Analyst
    • Full Visibility and Forensics

Which should you pick?

Choose Atlantis if

  • You need pull request plans.
  • You want to start without paying.
  • You work on Linux, Docker, Kubernetes, Self-hosted.
  • You also want comment driven apply.
Atlantis review

Choose SentinelOne if

  • You need ai-powered detection.
  • You work on Windows, Macos, Linux, Ios, Android.
  • You also want autonomous response.
SentinelOne review

Questions people ask

Is Atlantis or SentinelOne better?
Neither clearly leads. Atlantis starts at Free and SentinelOne at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Atlantis or SentinelOne?
Atlantis has a free tier; the other does not. Paid plans start at Free for Atlantis and On request for SentinelOne.
Does Atlantis or SentinelOne run on more platforms?
Atlantis runs on Linux, Docker, Kubernetes, Self-hosted. SentinelOne runs on Windows, Macos, Linux, Ios, Android.
Can I use Atlantis for free?
Yes. Atlantis has a free tier, so you can try it without paying. SentinelOne starts at On request.
What is Atlantis best used for?
Atlantis is most often used for making terraform review meaningful by putting the actual plan output in front of the approver, removing local applies and the credential sprawl that comes with every engineer holding production keys, getting pull request driven infrastructure without paying a per-user subscription for a hosted platform, enforcing conftest policies as a blocking check before an apply can run. Of those, making terraform review meaningful by putting the actual plan output in front of the approver and removing local applies and the credential sprawl that comes with every engineer holding production keys are not what SentinelOne is typically brought in for.
What can Atlantis do that SentinelOne cannot?
Atlantis covers Pull request plans, Comment driven apply, Workspace locking, Policy checking. SentinelOne covers AI-powered detection, Autonomous response, Behavioral threat intelligence, Root cause analysis.

Answered from the vendors’ own pages

Atlantis: Is there a company behind Atlantis?

No. It runs as a series of LF Projects under the Linux Foundation and is maintained by volunteers. There is no vendor to buy support from and no service level agreement.

SentinelOne: What is SentinelOne Singularity Complete pricing?

Singularity Complete costs $179.99 per endpoint per year and includes AI-driven endpoint and cloud workload protection, real-time threat detection and response, 14-day data retention, and AI Security Assistant. Pricing shown for 5-100 workstations.

Source
Atlantis: Is it a CNCF project?

No. It uses a channel in the CNCF Slack, which is often misread as membership, but the project sits under LF Projects rather than the CNCF.

SentinelOne: What features distinguish SentinelOne Commercial from Complete?

Singularity Commercial costs $229.99 per endpoint per year (versus $179.99 for Complete) and adds Identity Detection and Response, 90-day data retention (compared to 14-day), and Managed Threat Hunting services.

Source
Atlantis: Does it work with OpenTofu?

Yes, there is a dedicated integration guide alongside Terraform, and it also has configuration for working with hosted Terraform backends.

SentinelOne: How does partner pricing affect SentinelOne costs?

All SentinelOne purchases are made through authorized third-party partners, and partner pricing may differ from published rates. Customers should verify pricing with their authorized reseller.

Source
Atlantis: What does it not do that a paid platform does?

Drift detection, cost estimation, a managed state and run interface, and a real policy engine. Atlantis does pull request plan and apply well and stops there.

SentinelOne: What does SentinelOne Enterprise include?

Singularity Enterprise (custom pricing, contact sales) adds Agentic AI SOC Analyst and Full Visibility and Forensics capabilities to all Commercial features, plus expert-led onboarding and training.

Source
Share

Related pages

More on Atlantis

More on SentinelOne

Keep looking

Other head to heads