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Networking · head to head

Kentik vs Tailscale

Kentik logo

Kentik

Networking

Network observability platform built on flow and traffic data, sold on annual-only contracts starting around $24,000/year

From
On request
Rated
-
Full reviewWebsite
Tailscale logo

Tailscale

Networking

Zero-trust mesh VPN built on WireGuard with identity-based access

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Tailscale has a free tier, so it costs nothing to try first.
  • Each has a real cost: Kentik contracts are annual only, so there is no monthly option for a team wanting to trial the platform under real production load before committing to a year of spend; Tailscale requires active configuration and management; cannot be deployed passively like consumer VPNs
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Kentik and Tailscale actually diverge.

Attributes where Kentik and Tailscale differ
AttributeKentikTailscale
Starting priceOn requestFree
Pricing modelAnnual contract only, per tierfreemium
Free tierNoYes
PlatformsWeb, APILinux, macOS, Windows, iOS, Android, API, Web

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

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 Kentik

  • Flow-based traffic analysis
  • Synthetic testing
  • Cloud network monitoring
  • DDoS detection
  • API-driven querying

Only in Tailscale

Nothing recorded that Kentik does not also cover.

What people use each for

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

Kentik

  • A network engineering team at an ISP or large enterprise needing flow-level traffic visibility beyond basic uptime monitoringnot Tailscale
  • A cloud-heavy organisation wanting visibility into cloud provider network cost and performance across multiple providersnot Tailscale
  • A security or network operations team wanting DDoS detection layered on top of standard traffic monitoringnot Tailscale
  • A team needing synthetic testing alongside passive flow analysis in one platform rather than two separate toolsnot Tailscale

Tailscale

  • Remote team access to internal services without VPN concentratorsnot Kentik
  • Hybrid cloud connectivity across AWS, Azure, GCP, and on-premises networksnot Kentik
  • CI/CD pipeline access to internal infrastructure (databases, Kubernetes clusters)not Kentik
  • Zero-trust access to SSH, Kubernetes, and databases without bastion hostsnot Kentik
  • Mobile and IoT device management in enterprise environmentsnot Kentik
  • Temporary contractor and third-party access controlnot Kentik

Where each one falls short

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

Kentik

  • Contracts are annual only, so there is no monthly option for a team wanting to trial the platform under real production load before committing to a year of spend
  • The Pro tier's $24,000/year starting price is a serious commitment relative to general infrastructure monitoring tools, and it is aimed specifically at flow-level traffic visibility rather than general host monitoring
  • Add-on modules for advanced DDoS protection, service provider analytics and the Firehose pipeline are priced separately, so real deployment cost frequently exceeds the Pro sticker price
  • Premier tier pricing is entirely quote-based, so organisations needing more than Pro's limits (50 users, 1,000 FPS, 120-day retention) cannot get a number without a sales conversation
  • It is a specialised flow and traffic analytics tool, not a general infrastructure monitoring platform, so most buyers will still need a separate tool like PRTG or Icinga for host and service uptime checks
  • Data retention is capped at 120 days for traffic and 45 days for forensic data even on Pro, which may be short for organisations with longer compliance or investigation requirements

Tailscale

  • Requires active configuration and management; cannot be deployed passively like consumer VPNs
  • Device posture policies and JIT access tiers are locked behind Premium subscription (£18/month), raising per-user costs for enterprises
  • Limited support for legacy protocols and non-modern operating systems (Windows 7, older Android versions)
  • Centralised control plane operated by Tailscale (hosted in US); no self-hosted control plane option for air-gapped or sovereign deployments
  • Cannot replace full VPN functionality for accessing legacy IP-based services; only applicable to modern infrastructure

Pricing, plan by plan

Kentik

On request
  • Pro$24000/year
    • 50 users
    • 1,000 flows per second baseline
    • 2.5M synthetics credits
  • Premier$undefined/year
    • 1,000 users
    • 5M synthetics credits
    • Custom dimensions and scheduled reporting

Tailscale

Free
  • PersonalFree
    • Up to 6 users
    • Unlimited devices per user
    • 1,000 ephemeral resource minutes per month
  • Standard$8/month
    • Unlimited users
    • Unlimited devices
    • 1,000 ephemeral resource minutes per month
  • Premium$18/month
    • Unlimited users and devices
    • 10,000 ephemeral resource minutes per month
    • 300 ACL groups
  • EnterpriseFree
    • Custom pricing
    • Unlimited resources
    • Advanced security features

Which should you pick?

Choose Kentik if

  • You need flow-based traffic analysis.
  • You work on Web, API.
  • You also want synthetic testing.
Kentik review

Choose Tailscale if

  • You want to start without paying.
  • You work on Linux, macOS, Windows, iOS, Android, API, Web.
Tailscale review

Questions people ask

Is Kentik or Tailscale better?
Neither clearly leads. Kentik starts at On request and Tailscale at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Kentik or Tailscale?
Tailscale has a free tier; the other does not. Paid plans start at On request for Kentik and Free for Tailscale.
Does Kentik or Tailscale run on more platforms?
Kentik runs on Web, API. Tailscale runs on Linux, macOS, Windows, iOS, Android, API, Web.
Can I use Tailscale for free?
Yes. Tailscale has a free tier, so you can try it without paying. Kentik starts at On request.
What is Kentik best used for?
Kentik is most often used for a network engineering team at an isp or large enterprise needing flow-level traffic visibility beyond basic uptime monitoring, a cloud-heavy organisation wanting visibility into cloud provider network cost and performance across multiple providers, a security or network operations team wanting ddos detection layered on top of standard traffic monitoring, a team needing synthetic testing alongside passive flow analysis in one platform rather than two separate tools. Of those, a network engineering team at an isp or large enterprise needing flow-level traffic visibility beyond basic uptime monitoring and a cloud-heavy organisation wanting visibility into cloud provider network cost and performance across multiple providers are not what Tailscale is typically brought in for.
What can Kentik do that Tailscale cannot?
Kentik covers Flow-based traffic analysis, Synthetic testing, Cloud network monitoring, DDoS detection.

Answered from the vendors’ own pages

Kentik: Is there a monthly billing option?

No, Kentik states contracts are annual only.

Tailscale: Is Tailscale free?

Tailscale Personal tier is free forever for up to 6 users. Standard (£8/month per user) adds team features, Premium (£18/month per user) adds security controls, and Enterprise tiers are custom priced.

Source
Kentik: What is the entry price?

Pro starts at $2,000/month billed as $24,000/year for 50 users and baseline flow and synthetics quotas.

Tailscale: Does Tailscale route all traffic through a central gateway?

No. Tailscale creates direct encrypted connections between devices using WireGuard. It only proxies traffic when direct peer connections are not possible (some restrictive NAT scenarios). This reduces latency and eliminates VPN gateway bottlenecks.

Source
Kentik: Does Kentik replace general infrastructure monitoring tools like PRTG?

No, it is focused on flow-based traffic and network observability rather than general host and service uptime monitoring.

Tailscale: Can I host Tailscale on-premises?

No. Tailscale provides a hosted control plane only. For fully self-hosted mesh networking, consider WireGuard with manual key management or Netmaker. Tailscale Enterprise can provide custom deployments for specific requirements.

Source
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