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Thanos

Free#19 of 36 in Metrics Monitoring ToolsKubernetes Monitoring

Thanos: A powerful Prometheus extension for global queries and long-term metrics retention. Ranked #19 of 36 in Metrics Monitoring Tools by our editors (7.4/10); pricing: Open source; best for long-term, multi-cluster Prometheus querying.

7.4/10Editor score
Visit Thanos
Thanos7.4 Visit Thanos

At a glance

  • Editor score
    7.4 / 10
  • Pricing
    Open source
  • Best for
    Long-term, multi-cluster Prometheus querying
  • Paid from
    Free
  • Query language
    Promql
  • Facts checked
    19 Sep 2026
Thanos screenshot

  • Where it wins

    • Global PromQL-compatible querying across multiple Prometheus clusters
    • Long-term object storage with downsampling and block compaction
    • HA replica deduplication, remote write, and rule evaluation

  • Where it doesn't

    • Requires self-hosted deployment alongside Prometheus
    • Needs a broader surrounding stack and compatible object storage
    • More infrastructure-focused than a standalone monitoring service

Our verdict on Thanos

Thanos is an open-source set of components for teams operating Prometheus across multiple servers or clusters. It adds a global query layer, a PromQL-compatible interface, long-term storage, high-availability replica deduplication, historical data access, and rule evaluation. Its fit is strongest for infrastructure teams that want to extend an existing Prometheus ecosystem rather than adopt a standalone commercial monitoring service.

The platform’s ecosystem is a central strength. Thanos works with Prometheus and Grafana, exposes the Prometheus HTTP API, and supports object-storage backends including Google Cloud Storage, Amazon S3, Azure Storage, OpenStack Swift, and Tencent COS. Thanos Receive adds Prometheus Remote Write ingestion, while downsampling and block compaction support historical metrics workflows. This makes it suitable for organizations consolidating metrics across clusters, preserving long-term data, or querying a wider Prometheus estate through one layer.

Thanos is open source and self-hosted, so its value comes from the capabilities and integrations it adds to a surrounding stack rather than from packaged SaaS administration. Teams deploy its components themselves alongside Prometheus and compatible storage systems, which makes architecture and operational ownership important selection factors. Choose Thanos when global querying, long-term object storage, HA deduplication, remote write, and rule evaluation justify that broader setup. A narrower Prometheus deployment or a team seeking a standalone hosted monitoring product may prefer an alternative with fewer components to operate.

Your product? Our editors can test Thanos in depth and publish a review, labelled as paid · from $149/mo →

Thanos pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.
See plans on thanos.io

Thanos fact sheet

Free planNot verified
Paid fromFree
Data retentionNot verified
Custom metricsYes
Query languagePromql
Data ingestionMultiple
Self-hosted optionYes
SLO trackingNot verified
DeploymentSelf-hosted
Integrations7 integrations: Prometheus, Grafana, Google Cloud Storage, Amazon S3, Azure Storage, OpenStack Swift …
PricingOpen source
Websitethanos.io
Facts checked19 Sep 2026

Thanos integrations

Thanos lists 7 integrations on its own site.

  • Prometheus
  • Grafana
  • Google Cloud Storage
  • Amazon S3
  • Azure Storage
  • OpenStack Swift
  • Tencent COS

Alternatives to Thanos

See all Thanos alternatives →

Also Ranked In

Thanos is ranked in 2 of our directories.

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Featured on iTechGuides

Featured on iTechGuides — Thanos 7.4/10

Thanos is listed in our Metrics Monitoring Tools directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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