Is Arnica or Linkerd better?

Neither clearly leads. Arnica starts at Free and Linkerd at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Arnica or Linkerd?

Arnica starts at Free and Linkerd at Free.

Does Arnica or Linkerd run on more platforms?

Arnica runs on Web, GitHub, IDE. Linkerd runs on Kubernetes, Linux.

Can I use Arnica for free?

Both have a free tier, so you can try either at no cost before committing.

What is Arnica best used for?

Arnica is most often used for detecting ai-generated vulnerabilities in copilot and cursor suggestions, finding hardcoded secrets before they reach production, mapping container vulnerabilities back to source code, generating sbom for supply chain compliance requirements. Of those, detecting ai-generated vulnerabilities in copilot and cursor suggestions and finding hardcoded secrets before they reach production are not what Linkerd is typically brought in for.

What can Arnica do that Linkerd cannot?

Arnica covers AI SAST, Software Composition Analysis, Secrets detection, IaC scanning. Linkerd covers Automatic mutual TLS, Golden metrics, Rust micro-proxy, Traffic policy.

Cybersecurity · head to head

Arnica vs Linkerd

Arnica

Cybersecurity

AI-native application security platform detecting and fixing vulnerabilities across the SDLC

From: Free
Rated: -

Full review Website

Linkerd

Cloud

Lightweight service mesh for Kubernetes

From: Free
Rated: -

Full review Website

The short version

Each has a real cost: Arnica per-identity pricing ($25-$50/person/year) requires tracking active developers; Linkerd deliberately fewer features than Istio, so complex routing and multi-cluster policy can hit its limits
They diverge on capability: Arnica covers AI SAST, Linkerd covers Automatic mutual TLS.
Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Arnica and Linkerd actually diverge.

Attributes where Arnica and Linkerd differ
Attribute	Arnica	Linkerd
Pricing model	Per-identity subscription with annual discount	Open source, no licence fee
Platforms	Web, GitHub, IDE	Kubernetes, Linux
Category	Cybersecurity	Cloud

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 Arnica

AI SAST
Software Composition Analysis
Secrets detection
IaC scanning
Container scanning
SBOM generation
Agentic rules
Pipelineless integration

Only in Linkerd

Automatic mutual TLS
Golden metrics
Rust micro-proxy
Traffic policy

What people use each for

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

Arnica

Detecting AI-generated vulnerabilities in Copilot and Cursor suggestionsnot Linkerd
Finding hardcoded secrets before they reach productionnot Linkerd
Mapping container vulnerabilities back to source codenot Linkerd
Generating SBOM for supply chain compliance requirementsnot Linkerd
Scanning infrastructure-as-code for misconfiguration risksnot Linkerd

Linkerd

Adding mutual TLS between services to satisfy a compliance requirementnot Arnica
Getting per-service latency and success rates without instrumenting applicationsnot Arnica
Progressive delivery with traffic splitting during rolloutsnot Arnica

Where each one falls short

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

Arnica

Per-identity pricing ($25-$50/person/year) requires tracking active developers
Overage identity tracking via 90-day PR activity can be unpredictable
Free plan limited to weekly updates, requiring upgrade for real-time scanning
Advanced add-ons (Image Scanning, AI SAST, Agentic Rules Enforcer) pricing not published
On-premises deployment limited to Enterprise tier

Linkerd

Deliberately fewer features than Istio, so complex routing and multi-cluster policy can hit its limits
Kubernetes only, with no story for workloads outside a cluster
A sidecar per pod is still real memory and latency overhead, however small, and a mesh is another layer to debug during incidents

Pricing, plan by plan

Arnica

Free

FreeFree
- No credit card required
- 14-day trial available
- Weekly risk identification updates
Core Business$360/year
- Monthly billing option at $30/identity/month
- Annual billing at $25/identity/month (17% discount)
- Real-time risk scanning and notifications
Core Enterprise$720/year
- Monthly billing option at $60/identity/month
- Annual billing at $50/identity/month (17% discount)
- All Core Business features

Linkerd

Free

LinkerdFree
- Full functionality
- No usage limits
- Community support

Which should you pick?

Choose Arnica if

You need ai sast.
You want to start without paying.
You work on Web, GitHub, IDE.
You also want software composition analysis.

Arnica review

Choose Linkerd if

You need automatic mutual tls.
You want to start without paying.
You work on Kubernetes, Linux.
You also want golden metrics.

Linkerd review

Questions people ask

Is Arnica or Linkerd better?: Neither clearly leads. Arnica starts at Free and Linkerd at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Arnica or Linkerd?: Arnica starts at Free and Linkerd at Free.
Does Arnica or Linkerd run on more platforms?: Arnica runs on Web, GitHub, IDE. Linkerd runs on Kubernetes, Linux.
Can I use Arnica for free?: Both have a free tier, so you can try either at no cost before committing.
What is Arnica best used for?: Arnica is most often used for detecting ai-generated vulnerabilities in copilot and cursor suggestions, finding hardcoded secrets before they reach production, mapping container vulnerabilities back to source code, generating sbom for supply chain compliance requirements. Of those, detecting ai-generated vulnerabilities in copilot and cursor suggestions and finding hardcoded secrets before they reach production are not what Linkerd is typically brought in for.
What can Arnica do that Linkerd cannot?: Arnica covers AI SAST, Software Composition Analysis, Secrets detection, IaC scanning. Linkerd covers Automatic mutual TLS, Golden metrics, Rust micro-proxy, Traffic policy.

Answered from the vendors’ own pages

Arnica: How are identities defined in Arnica pricing?

Identities are any users and other contributing entities that contributed code and/or had PR activity during the last 90 days. This ensures billing matches active developers.

Source

Linkerd: Is Linkerd free?

The open-source project is free. Buoyant, its maintainer, sells enterprise distributions and support separately.

Arnica: What is the annual discount?

Annual prepayment offers approximately 17% savings versus monthly billing. Core Business annual is $300/identity versus $360 for monthly.

Source

Linkerd: Linkerd or Istio?

Linkerd trades features for simplicity, with a smaller proxy and far less configuration. Istio is more capable and correspondingly more work to run.

Arnica: Can I cancel or downgrade Arnica anytime?

Yes. Subscriptions can be cancelled or downgraded at any time. Overage identities receive automatic protection with true-up invoicing.

Source

Linkerd: Do I need a service mesh at all?

Only if you need mutual TLS, uniform retries or per-service traffic metrics across many services. For a handful of services it is usually more machinery than the problem justifies.

Arnica vs Linkerd

Arnica

Linkerd

The short version

Where they differ

What each one covers

Only in Arnica

Only in Linkerd

What people use each for

Arnica

Linkerd

Where each one falls short

Arnica

Linkerd

Pricing, plan by plan

Arnica

Linkerd

Which should you pick?

Choose Arnica if

Choose Linkerd if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Arnica

More on Linkerd

Keep looking

Other head to heads