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Cybersecurity · head to head

Cosign vs Tyk

Cosign logo

Cosign

Cybersecurity

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

From
Free
Rated
-
Full reviewWebsite
Tyk logo

Tyk

APIs

Open-source API gateway and API management platform

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: 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.; Tyk professional and Enterprise plan pricing not published; contact required
  • They diverge on capability: Cosign covers Keyless signing, Tyk covers API Gateway.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Cosign and Tyk actually diverge.

Attributes where Cosign and Tyk differ
AttributeCosignTyk
Pricing modelOpen source, no licence feefreemium
PlatformsmacOS, Linux, Windows, DockerLinux, Docker, Kubernetes, Cloud
CategoryCybersecurityAPIs
FoundedUnknown2013

Identical on both: starting price (Free), free tier (Yes), 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 Cosign

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

Only in Tyk

  • API Gateway
  • Rate Limiting
  • Authentication
  • Kubernetes
  • Docker
  • AWS
  • Azure
  • Linux support

What people use each for

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

Cosign

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

Tyk

  • API gateway and API management platformsnot Cosign
  • Microservices architecture orchestrationnot Cosign
  • High-growth teams standardizing on API platformsnot Cosign
  • Enterprises requiring advanced security and governancenot Cosign

Where each one falls short

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

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.

Tyk

  • Professional and Enterprise plan pricing not published; contact required
  • Core plan uses consumption-based model with variable costs
  • No upfront pricing transparency for production deployments

Pricing, plan by plan

Cosign

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

Tyk

Free
  • Free TrialFree
    • Fully featured 48-hour trial
    • No credit card required
    • Tyk Cloud access
  • Core Plan$null/month
    • Usage-based flexible pricing
    • Cloud, Hybrid, or Self-managed deployment
    • Unlimited API gateways
  • Professional Plan$null/month
    • One fixed price with unlimited access
    • All deployment options
    • Unlimited APIs and requests
  • Enterprise Plan$null/month
    • Custom pricing required
    • Advanced governance and security
    • Premium support with custom SLAs

Which should you pick?

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

Choose Tyk if

  • You need api gateway.
  • You want to start without paying.
  • You work on Linux, Docker, Kubernetes, Cloud.
  • You also want rate limiting.
Tyk review

Questions people ask

Is Cosign or Tyk better?
Neither clearly leads. Cosign starts at Free and Tyk at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Cosign or Tyk?
Cosign starts at Free and Tyk at Free.
Does Cosign or Tyk run on more platforms?
Cosign runs on macOS, Linux, Windows, Docker. Tyk runs on Linux, Docker, Kubernetes, Cloud.
Can I use Cosign for free?
Both have a free tier, so you can try either at no cost before committing.
What is Cosign best used for?
Cosign is most often used for signing container images in a build pipeline without managing long-lived private keys, attaching a signed bill of materials to a release so consumers can verify its provenance, meeting a customer or regulatory requirement for signed artifacts, verifying third-party images before they enter an internal registry. Of those, signing container images in a build pipeline without managing long-lived private keys and attaching a signed bill of materials to a release so consumers can verify its provenance are not what Tyk is typically brought in for.
What can Cosign do that Tyk cannot?
Cosign covers Keyless signing, Key and KMS signing, Registry-native storage, In-toto attestations. Tyk covers API Gateway, Rate Limiting, Authentication, Kubernetes.

Answered from the vendors’ own pages

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.

Tyk: How much does Tyk cost?

Tyk offers a free 48-hour trial with no credit card required. The Core plan uses usage-based pricing on a flexible model. Professional plan offers unlimited access at a fixed price (amount not published). Enterprise plans require custom pricing.

Source
Cosign: Is signing alone enough?

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

Tyk: Is there a free trial of Tyk?

Yes, Tyk provides a fully featured 48-hour free trial of Tyk Cloud that requires no credit card to start.

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.

Tyk: What deployment options are included in Tyk pricing?

All Tyk plans support Cloud, Hybrid, or Self-managed deployment options without feature restrictions, allowing flexible infrastructure choices across pricing tiers.

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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