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Networking · head to head

Tailscale vs Thanos

Tailscale logo

Tailscale

Networking

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

From
Free
Rated
-
Full reviewWebsite
Thanos logo

Thanos

Cloud

Highly available Prometheus with long-term object storage

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Tailscale requires active configuration and management; cannot be deployed passively like consumer VPNs; Thanos several components — sidecar, store, querier, compactor, ruler — each with its own configuration and failure modes

Where they differ

Only the attributes on which Tailscale and Thanos actually diverge.

Attributes where Tailscale and Thanos differ
AttributeTailscaleThanos
Pricing modelfreemiumOpen source, no licence fee
PlatformsLinux, macOS, Windows, iOS, Android, API, WebKubernetes, Linux, Docker
CategoryNetworkingCloud

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 Tailscale

Nothing recorded that Thanos does not also cover.

Only in Thanos

  • Global query
  • Object storage retention
  • Deduplication
  • Downsampling

What people use each for

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

Tailscale

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

Thanos

  • Querying metrics across many clusters or regions from one placenot Tailscale
  • Retaining metrics for years without local disk growthnot Tailscale
  • Removing the gap that appears when a single Prometheus instance restartsnot Tailscale

Where each one falls short

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

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

Thanos

  • Several components — sidecar, store, querier, compactor, ruler — each with its own configuration and failure modes
  • The compactor is a common source of operational trouble and must not run twice against the same bucket
  • Query latency over object storage is meaningfully higher than local Prometheus
  • Object storage costs and API request charges become real at high volume

Pricing, plan by plan

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

Thanos

Free
  • ThanosFree
    • Full functionality
    • No usage limits
    • Community support

Which should you pick?

Choose Tailscale if

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

Choose Thanos if

  • You need global query.
  • You want to start without paying.
  • You work on Kubernetes, Linux, Docker.
  • You also want object storage retention.
Thanos review

Questions people ask

Is Tailscale or Thanos better?
Neither clearly leads. Tailscale starts at Free and Thanos at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Tailscale or Thanos?
Tailscale starts at Free and Thanos at Free.
Does Tailscale or Thanos run on more platforms?
Tailscale runs on Linux, macOS, Windows, iOS, Android, API, Web. Thanos runs on Kubernetes, Linux, Docker.
Can I use Tailscale for free?
Both have a free tier, so you can try either at no cost before committing.
What is Tailscale best used for?
Tailscale is most often used for remote team access to internal services without vpn concentrators, hybrid cloud connectivity across aws, azure, gcp, and on-premises networks, ci/cd pipeline access to internal infrastructure (databases, kubernetes clusters), zero-trust access to ssh, kubernetes, and databases without bastion hosts. Of those, remote team access to internal services without vpn concentrators and hybrid cloud connectivity across aws, azure, gcp, and on-premises networks are not what Thanos is typically brought in for.
What can Tailscale do that Thanos cannot?
Thanos covers Global query, Object storage retention, Deduplication, Downsampling.

Answered from the vendors’ own pages

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
Thanos: Is Thanos free?

Yes, open source and CNCF-incubating. Costs are the object storage it uses.

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
Thanos: Does Thanos replace Prometheus?

No. It runs alongside existing Prometheus servers, adding global query, deduplication and long-term storage.

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
Thanos: Thanos or VictoriaMetrics?

Thanos layers onto Prometheus using object storage and is the more established multi-cluster answer. VictoriaMetrics is a separate store aiming at lower resource use and fewer moving parts.

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