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Cybersecurity · head to head

Akeyless vs Tenable Nessus

Akeyless logo

Akeyless

Cybersecurity

Runtime identity security at agentic scale

From
Free
Rated
-
Full reviewWebsite
Tenable Nessus logo

Tenable Nessus

Cybersecurity

Network vulnerability scanner

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Akeyless pricing is usage-based and complex, requires sales consultation; Tenable Nessus nessus Professional is $4,790 for one year, sold as an annual licence rather than a per scan or usage based fee
  • They diverge on capability: Akeyless covers Secrets management, Tenable Nessus covers Network scanning.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Akeyless and Tenable Nessus actually diverge.

Attributes where Akeyless and Tenable Nessus differ
AttributeAkeylessTenable Nessus
Pricing modelUsage-based pricing units that vary by product modulesubscription
PlatformsCloud, Hybrid, On-PremisesWindows, Linux, Macos, Cloud
FoundedUnknown2002

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Cybersecurity).

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 Akeyless

  • Secrets management
  • Machine identity
  • AI agent identity
  • Certificate management
  • Privileged access management
  • Multi-vault governance
  • Encryption and KMS
  • Password manager

Only in Tenable Nessus

  • Network scanning
  • Vulnerability detection
  • Configuration assessment
  • Malware detection
  • Compliance checking
  • Cloud security assessment
  • Mobile scanning
  • API access

What people use each for

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

Akeyless

  • Securing AI agents with dedicated identity trackingnot Tenable Nessus
  • Managing machine-to-machine credentials at scalenot Tenable Nessus
  • Automating PKI and certificate lifecyclenot Tenable Nessus
  • Implementing just-in-time privileged accessnot Tenable Nessus

Tenable Nessus

  • Vulnerability scanning of servers, network devices and web applicationsnot Akeyless
  • Configuration and compliance auditing against hardening benchmarksnot Akeyless
  • Point in time assessments by consultants and penetration testersnot Akeyless

Where each one falls short

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

Akeyless

  • Pricing is usage-based and complex, requires sales consultation
  • Free tier is very limited with restricted access
  • No transparent pricing published for enterprise features
  • Pricing model varies significantly by product module

Tenable Nessus

  • Nessus Professional is $4,790 for one year, sold as an annual licence rather than a per scan or usage based fee
  • Support beyond the base entitlement costs an extra $400 per year for Advanced Support with 24x365 phone and chat access
  • The on demand training course is a separate $275 purchase for a single person for one year
  • Multi year discounts require paying for two or three years up front

Pricing, plan by plan

Akeyless

Free
  • FreeFree
    • Limited feature access
    • Restricted usage quotas
  • Enterprise$undefined/custom
    • Custom pricing based on usage
    • Unlimited resource quotas
    • Full feature access

Tenable Nessus

Free
  • Nessus EssentialsFree
    • Up to 16 ips
    • Network scanning
    • Vulnerability assessment
  • Nessus Professional$2600/year
    • Unlimited targets
    • Enterprise features
    • Advanced analytics
  • Nessus Expert$5200/year
    • All Professional features
    • Cloud integration
    • Advanced reporting

Which should you pick?

Choose Akeyless if

  • You need secrets management.
  • You want to start without paying.
  • You work on Cloud, Hybrid, On-Premises.
  • You also want machine identity.
Akeyless review

Choose Tenable Nessus if

  • You need network scanning.
  • You want to start without paying.
  • You work on Windows, Linux, Macos, Cloud.
  • You also want vulnerability detection.
Tenable Nessus review

Questions people ask

Is Akeyless or Tenable Nessus better?
Neither clearly leads. Akeyless starts at Free and Tenable Nessus at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Akeyless or Tenable Nessus?
Akeyless starts at Free and Tenable Nessus at Free.
Does Akeyless or Tenable Nessus run on more platforms?
Akeyless runs on Cloud, Hybrid, On-Premises. Tenable Nessus runs on Windows, Linux, Macos, Cloud.
Can I use Akeyless for free?
Both have a free tier, so you can try either at no cost before committing.
What is Akeyless best used for?
Akeyless is most often used for securing ai agents with dedicated identity tracking, managing machine-to-machine credentials at scale, automating pki and certificate lifecycle, implementing just-in-time privileged access. Of those, securing ai agents with dedicated identity tracking and managing machine-to-machine credentials at scale are not what Tenable Nessus is typically brought in for.
What can Akeyless do that Tenable Nessus cannot?
Akeyless covers Secrets management, Machine identity, AI agent identity, Certificate management. Tenable Nessus covers Network scanning, Vulnerability detection, Configuration assessment, Malware detection.

Answered from the vendors’ own pages

Akeyless: What pricing model does Akeyless use?

Akeyless uses usage-based pricing units that vary by product. For example, Secrets Management is priced by clients, Certificate Management by managed certificates, Encryption by transactions, and PAM by users. Contact sales for a custom quote.

Source
Tenable Nessus: What are the three Nessus offerings?

Nessus Essentials is a free introductory offering for educators, students, and career starters, limited to 16 IPs for scanning. Nessus Professional is designed for consultants and SMBs, providing unlimited IT scans across any location. Nessus Expert is the premium offering extending Professional with web application scanning, infrastructure-as-code scanning, and external attack surface assessment up to 5 domains.

Source
Akeyless: Does Akeyless support hybrid deployment?

Yes, Akeyless offers Pure SaaS cloud-managed deployment and Hybrid SaaS with on-premise gateways and zero-knowledge encryption for sensitive environments.

Source
Tenable Nessus: What OS platforms does Nessus support?

Nessus runs on Debian/Kali Linux, Fedora, FreeBSD, Mac OS X, Red Hat/CentOS, SUSE Linux, Ubuntu, and various Windows versions including Server 2008, 2012, and Windows 7-10.

Source
Akeyless: How does Akeyless handle AI agent identities?

Akeyless provides dedicated AI agent identity tracking with runtime access control, allowing organizations to manage AI agent access separately from human and machine identities.

Source
Tenable Nessus: Can I use Nessus to scan third-party networks as a consultant?

Yes, Tenable permits you to use Nessus to scan third-party networks. Nessus Professional is ideal for consultants.

Source
Tenable Nessus: Can Nessus perform PCI external scanning?

Yes, you can use Nessus Professional to perform external network scans as required by the PCI DSS 11.2.2 requirement.

Source
Tenable Nessus: What additional features does Nessus Expert provide?

Web application scanning, which is dynamic application security testing (DAST) providing comprehensive visibility and insight into web application security issues; scanning code repositories for vulnerabilities; and assessing external attack surface with subdomain discovery.

Source
Tenable Nessus: What support options exist for Nessus Professional?

Standard Support includes software upgrades, patches, plugin access, and 24x7 support via chat and community portal. Advanced Support adds 24x7 phone access and committed SLAs: P1 less than 2 hours, P2 less than 4 hours, P3 less than 12 hours, P4 less than 24 hours.

Source
Tenable Nessus: How frequently are Nessus plugins updated?

Nessus plugins are updated daily, based on when vendors and security research sites publish new vulnerabilities.

Source
Tenable Nessus: How does licensing work in virtual machine environments?

Whether you are using Nessus in a physical or a virtual environment, the IP addresses or hosts that you are scanning from must be licensed.

Source
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