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Cybersecurity · head to head

Aikido vs Cosign

Aikido logo

Aikido

Cybersecurity

Unified security platform automating vulnerability detection and fixing across development

From
Free
Rated
-
Full reviewWebsite
Cosign logo

Cosign

Cybersecurity

Signs and verifies container images and artifacts, with or without managing keys

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Aikido free plan includes fair-usage limits on repos and container images; Cosign keyless signing inherits every weakness of the identity provider behind it. Sigstore’s own threat model states that if an identity provider is compromised, Sigstore will issue certificates to those identities, so a compromised account produces perfectly valid signatures.
  • They diverge on capability: Aikido covers Static Application Security Testing (SAST), Cosign covers Keyless signing.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Aikido and Cosign actually diverge.

Attributes where Aikido and Cosign differ
AttributeAikidoCosign
Pricing modelSubscription with free tierOpen source, no licence fee
PlatformsWeb, CI/CD, IDEmacOS, Linux, Windows, Docker
Founded2022Unknown

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 Aikido

  • Static Application Security Testing (SAST)
  • Software Composition Analysis (SCA)
  • AutoFix
  • Secrets detection
  • Cloud Security Posture Management
  • AI-powered penetration testing
  • Device protection
  • False positive reduction

Only in Cosign

  • Keyless signing
  • Key and KMS signing
  • Registry-native storage
  • In-toto attestations
  • Offline verification
  • Trusted root and signing config

What people use each for

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

Aikido

  • Developer-friendly security integrated into PR workflowsnot Cosign
  • Automated vulnerability remediation with context-aware alertsnot Cosign
  • Consolidation of fragmented security tools across development lifecyclenot Cosign
  • Cloud infrastructure security posture monitoringnot Cosign
  • Supply chain attack prevention and malware detectionnot Cosign

Cosign

  • Signing container images in a build pipeline without managing long-lived private keysnot Aikido
  • Attaching a signed bill of materials to a release so consumers can verify its provenancenot Aikido
  • Meeting a customer or regulatory requirement for signed artifactsnot Aikido
  • Verifying third-party images before they enter an internal registrynot Aikido

Where each one falls short

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

Aikido

  • Free plan includes fair-usage limits on repos and container images
  • Pricing increases significantly with user and repository scale
  • Advanced features like penetration testing and VM scanning limited to higher tiers
  • Device protection limited to Development environments only
  • Requires multiple plan tiers for full platform coverage

Cosign

  • Keyless signing inherits every weakness of the identity provider behind it. Sigstore’s own threat model states that if an identity provider is compromised, Sigstore will issue certificates to those identities, so a compromised account produces perfectly valid signatures.
  • A signature proves who signed, never whether they should have. The documentation is explicit that Sigstore cannot determine authorisation, so every consumer must write and maintain their own identity and issuer policy or verification means nothing.
  • Nothing is enforced without an admission controller. Signing changes what you can prove, not what runs, and the official policy controller has a small maintainer base for a component sitting in a cluster admission path.
  • Upgrades break pipelines. Version 3 changed defaults, version 4 is announced as removing legacy functionality and roughly half the command line flags, and two official client libraries still lacked support for the new log format as of mid 2026.
  • Signatures do not expire. An artifact signed before a maintainer account was compromised and one signed after are indistinguishable unless somebody is actively monitoring the transparency log, and almost nobody is.

Pricing, plan by plan

Aikido

Free
  • DeveloperFree
    • Up to 2 users
    • Dependency scanning (SCA)
    • SAST and AI SAST
  • Pro$600/month
    • Up to 10 users
    • All Basic features
    • On-premise scanning
  • Advanced$600/month
    • Up to 10 users
    • All Pro features
    • Broker for internal apps
  • Enterprise$null/custom
    • Custom pricing for tailored modules
    • Dedicated account management
    • Custom SLAs

Cosign

Free
  • CosignFree
    • Apache-2.0
    • Public Sigstore infrastructure free to use
    • No usage limits published

Which should you pick?

Choose Aikido if

  • You need static application security testing (sast).
  • You want to start without paying.
  • You work on Web, CI/CD, IDE.
  • You also want software composition analysis (sca).
Aikido review

Choose Cosign if

  • You need keyless signing.
  • You want to start without paying.
  • You work on macOS, Linux, Windows, Docker.
  • You also want key and kms signing.
Cosign review

Questions people ask

Is Aikido or Cosign better?
Neither clearly leads. Aikido starts at Free and Cosign at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Aikido or Cosign?
Aikido starts at Free and Cosign at Free.
Does Aikido or Cosign run on more platforms?
Aikido runs on Web, CI/CD, IDE. Cosign runs on macOS, Linux, Windows, Docker.
Can I use Aikido for free?
Both have a free tier, so you can try either at no cost before committing.
What is Aikido best used for?
Aikido is most often used for developer-friendly security integrated into pr workflows, automated vulnerability remediation with context-aware alerts, consolidation of fragmented security tools across development lifecycle, cloud infrastructure security posture monitoring. Of those, developer-friendly security integrated into pr workflows and automated vulnerability remediation with context-aware alerts are not what Cosign is typically brought in for.
What can Aikido do that Cosign cannot?
Aikido covers Static Application Security Testing (SAST), Software Composition Analysis (SCA), AutoFix, Secrets detection. Cosign covers Keyless signing, Key and KMS signing, Registry-native storage, In-toto attestations.

Answered from the vendors’ own pages

Aikido: What is included in Aikido's free Developer plan?

The free Developer plan includes up to 2 users with SAST, SCA, secrets detection, cloud scanning, and license risk detection. Fair-usage limits apply: 10 repos, 2 container images, 1 domain, and 1 cloud account.

Source
Cosign: Does Cosign tell me if an image is vulnerable?

No. It has no vulnerability knowledge whatsoever. It can carry an SBOM as a signed attestation but never reads it. Pair it with a scanner.

Aikido: What is AutoFix and how does it work?

AutoFix is Aikido's automated vulnerability remediation feature that identifies vulnerabilities and suggests or applies specific code fixes automatically, reducing manual remediation effort.

Source
Cosign: Is signing alone enough?

No. Verification is a command somebody runs. Without an admission controller enforcing it, an unsigned image still runs.

Aikido: How many false positives does Aikido reduce?

Aikido reduces false positives by 99%, using AI-powered context awareness to filter noise and focus on vulnerabilities that present real business risk.

Source
Cosign: What does a bare cosign verify actually prove?

Very little. Without a pinned certificate identity and OIDC issuer, it accepts a valid signature from any identity at all.

Aikido: What integrations does Aikido support?

Aikido integrates with Jira, Linear, Slack, Teams, GitHub, GitLab, and other popular development tools to fit into existing workflows.

Source
Cosign: What is the risk of keyless signing?

Your OIDC provider becomes the root of trust. Compromise of that account yields genuine, verifiable signatures, so account security is the control that matters.

Cosign: Should we expect breaking changes?

Yes. Version 4 is announced to remove roughly half the flags, and a post-quantum migration is named as a further breaking change after that.

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