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Cybersecurity · head to head

Infisical vs Thanos

Infisical logo

Infisical

Cybersecurity

Security infrastructure for developers and AI agents

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: Infisical free tier limited to 5 identities, suitable only for small teams or evaluation; Thanos several components — sidecar, store, querier, compactor, ruler — each with its own configuration and failure modes
  • They diverge on capability: Infisical covers Secrets management, Thanos covers Global query.
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Infisical and Thanos actually diverge.

Attributes where Infisical and Thanos differ
AttributeInfisicalThanos
Pricing modelUnknownOpen source, no licence fee
PlatformsWeb, CLI, Cloud, Self-HostedKubernetes, Linux, Docker
CategoryCybersecurityCloud

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 Infisical

  • Secrets management
  • Certificate management
  • Privileged access management
  • Secret versioning
  • Dynamic secrets
  • SAML SSO
  • Open-source core
  • Secrets scanning

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.

Infisical

  • Managing secrets across Kubernetes clustersnot Thanos
  • Automating certificate lifecycle for internal PKInot Thanos
  • Providing privileged database access with audit trailsnot Thanos
  • Securing credentials for AI agents at runtimenot Thanos

Thanos

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

Where each one falls short

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

Infisical

  • Free tier limited to 5 identities, suitable only for small teams or evaluation
  • Pricing tiers are per-identity, which scales costs with team size
  • Certificate management requires Enterprise plan for advanced features like wildcards
  • Privileged access tier is separate billing from secrets management

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

Infisical

Free
  • FreeFree
    • 5 identities
    • Unlimited projects
    • 3 environments
  • Pro - Secrets$20/month
    • Per-identity pricing
    • Unlimited identities
    • SAML SSO
  • Pro - Secrets (Annual)$20/year
    • Annual discount available
    • Unlimited identities
    • SAML SSO
  • Advanced - Secrets$40/month
    • Per-identity pricing
    • Dynamic secrets
    • Gateways

Thanos

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

Which should you pick?

Choose Infisical if

  • You need secrets management.
  • You want to start without paying.
  • You work on Web, CLI, Cloud, Self-Hosted.
  • You also want certificate management.
Infisical 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 Infisical or Thanos better?
Neither clearly leads. Infisical 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, Infisical or Thanos?
Infisical starts at Free and Thanos at Free.
Does Infisical or Thanos run on more platforms?
Infisical runs on Web, CLI, Cloud, Self-Hosted. Thanos runs on Kubernetes, Linux, Docker.
Can I use Infisical for free?
Both have a free tier, so you can try either at no cost before committing.
What is Infisical best used for?
Infisical is most often used for managing secrets across kubernetes clusters, automating certificate lifecycle for internal pki, providing privileged database access with audit trails, securing credentials for ai agents at runtime. Of those, managing secrets across kubernetes clusters and automating certificate lifecycle for internal pki are not what Thanos is typically brought in for.
What can Infisical do that Thanos cannot?
Infisical covers Secrets management, Certificate management, Privileged access management, Secret versioning. Thanos covers Global query, Object storage retention, Deduplication, Downsampling.

Answered from the vendors’ own pages

Infisical: How is pricing calculated for Secrets Management?

Pricing is per-identity per month. Free tier includes 5 identities. Pro tier is $20/identity/month, Advanced is $40/identity/month. All pricing in USD.

Source
Thanos: Is Thanos free?

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

Infisical: Can I self-host Infisical?

Yes, Infisical's core is open-source under the MIT license and can be self-hosted. The managed cloud service is also available with additional features.

Source
Thanos: Does Thanos replace Prometheus?

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

Infisical: What is included in the Enterprise plan?

Enterprise plan includes SCIM, LDAP, approval workflows, external KMS/HSM support, and 99.99% SLA. Pricing is custom and determined by annual commitment.

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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