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Developer Tools · head to head

Depot vs Istio

Depot logo

Depot

Developer Tools

Cloud-based builds and CI runs 55x faster with less cost

From
Free
Free plan
Yes
Full reviewWebsite
Istio logo

Istio

Technology

A Kubernetes service mesh that adds mutual TLS, traffic control and telemetry between services without changing application code.

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Depot developer plan minute limits may be insufficient for active development; Istio sidecar mode adds an Envoy container to every pod, which costs CPU and memory per workload and adds a hop of latency in each direction, and it introduces a startup ordering problem where an application container can begin making calls before its proxy is ready.
  • They diverge on capability: Depot covers Depot CI, Istio covers Automatic mutual TLS.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Depot and Istio actually diverge.

Attributes where Depot and Istio differ
AttributeDepotIstio
Pricing modelUnknownopen-source
PlatformsCloud, GitHub, CLIWeb
CategoryDeveloper ToolsTechnology
Founded2022Unknown

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 Depot

  • Depot CI
  • Container builds
  • GitHub Actions runners
  • Distributed caching
  • Build API
  • Depot Registry
  • Cross-platform builds
  • SSH debugging

Only in Istio

  • Automatic mutual TLS
  • Traffic splitting
  • Resilience policies
  • Authorization policies
  • Uniform telemetry
  • Ambient mode
  • Gateway API support
  • Multi-cluster mesh

What people use each for

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

Depot

  • Accelerating Docker builds for container-based developmentnot Istio
  • Replacing GitHub Actions runners with faster infrastructurenot Istio
  • Distributing cache across Monorepo buildsnot Istio
  • Debugging failed CI builds interactively with SSHnot Istio

Istio

  • Proving to an auditor that all internal service traffic is encrypted and authenticated, as a platform property rather than a per-team promisenot Depot
  • Progressive delivery, where releases shift traffic by percentage or header and roll back without a redeploynot Depot
  • A polyglot estate where implementing retries, timeouts and tracing in every language's client library has already failednot Depot
  • Connecting several Kubernetes clusters into one addressable service namespace with shared workload identitynot Depot

Where each one falls short

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

Depot

  • Developer plan minute limits may be insufficient for active development
  • Startup plan at $200/mo is expensive for smaller teams
  • Business plan requires custom pricing consultation
  • macOS M2 runners not available on Developer plan

Istio

  • Sidecar mode adds an Envoy container to every pod, which costs CPU and memory per workload and adds a hop of latency in each direction, and it introduces a startup ordering problem where an application container can begin making calls before its proxy is ready.
  • Upgrades are projects rather than patches: you run revisioned control planes, canary the new revision and restart every workload to pick up new sidecars, and Istio supports only a narrow band of recent minor versions, so this recurs roughly quarterly for as long as you run it.
  • The API surface is large, spanning VirtualService, DestinationRule, Gateway, PeerAuthentication, AuthorizationPolicy, Sidecar and the Kubernetes Gateway API, and a mistake usually appears as a 503 with an Envoy response flag rather than a rejected configuration, so debugging requires Envoy knowledge, not just Istio knowledge.
  • Ambient mode removes the sidecar but is a different architecture with its own components and does not cover every feature the sidecar path does, so adopting it is a migration and a re-test of your policies rather than a configuration switch.
  • It is Kubernetes-first; adding virtual machine workloads to the mesh is supported but much less well-trodden, so a mixed estate of Kubernetes and VMs ends up maintaining two networking and identity models.
  • Below a few dozen services, most of what teams actually want (encrypted internal traffic, retries, weighted rollouts) is available from a cloud load balancer or from Linkerd with a fraction of the components, and at that scale Istio commonly becomes the single largest source of production incidents.

Pricing, plan by plan

Depot

Free
  • Developer$20/month
    • 1 user
    • 500 Docker build minutes per month
    • 2,000 Depot CI minutes per month
  • Startup$200/month
    • Unlimited users
    • 5,000 Docker build minutes per month
    • 20,000 Depot CI minutes per month
  • Business$undefined/custom
    • Custom pricing
    • Unlimited users
    • Custom monthly compute

Istio

Free
  • Open SourceFree
    • self-hosted installation
    • service mesh capabilities
    • cloud native computing foundation project

Which should you pick?

Choose Depot if

  • You need depot ci.
  • You want to start without paying.
  • You work on Cloud, GitHub, CLI.
  • You also want container builds.
Depot review

Choose Istio if

  • You need automatic mutual tls.
  • You want to start without paying.
  • You also want traffic splitting.
Istio review

Questions people ask

Is Depot or Istio better?
Neither clearly leads. Depot starts at Free and Istio at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Depot or Istio?
Depot starts at Free and Istio at Free.
Does Depot or Istio run on more platforms?
Depot runs on Cloud, GitHub, CLI. Istio runs on Web.
Can I use Depot for free?
Both have a free tier, so you can try either at no cost before committing.
What is Depot best used for?
Depot is most often used for accelerating docker builds for container-based development, replacing github actions runners with faster infrastructure, distributing cache across monorepo builds, debugging failed ci builds interactively with ssh. Of those, accelerating docker builds for container-based development and replacing github actions runners with faster infrastructure are not what Istio is typically brought in for.
What can Depot do that Istio cannot?
Depot covers Depot CI, Container builds, GitHub Actions runners, Distributed caching. Istio covers Automatic mutual TLS, Traffic splitting, Resilience policies, Authorization policies.

Answered from the vendors’ own pages

Depot: How much faster are Depot runners compared to GitHub Actions?

Depot runners offer 30% faster CPUs and 10x faster networking than standard GitHub-hosted runners, enabling builds to complete significantly faster.

Source
Istio: Do we need a service mesh at all?

Only if you have enough services, or a compliance requirement, that implementing mTLS, retries and tracing per language has become unmanageable. Below roughly a few dozen services, an ingress controller plus good client libraries usually delivers more reliability for less operational cost.

Depot: What is included in the Developer plan?

Developer plan ($20/month) includes 500 Docker build minutes, 2,000 Depot CI minutes, 2,000 GitHub Actions minutes, 25 GB storage, unlimited concurrency, and community support.

Source
Istio: Sidecar mode or ambient mode?

Ambient removes the per-pod proxy and its startup ordering problems and costs less at high pod counts, but it is a newer architecture and does not cover every sidecar feature. New deployments should evaluate ambient first; existing sidecar meshes should treat the move as a migration project.

Depot: Can I use Depot with my own AWS account?

Yes, Depot Managed allows deployment within customer AWS accounts. This is available to interested customers; contact sales for details.

Source
Istio: How does it compare with Linkerd?

Linkerd is deliberately smaller, uses its own Rust proxy rather than Envoy, and is quicker to operate; Istio has a far larger feature surface, multi-cluster and VM support, and broader vendor backing. Note that Linkerd's stable distribution builds are commercially licensed by Buoyant, whereas Istio's releases are freely available.

Istio: Who supports it commercially?

Solo.io and Tetrate sell supported distributions and control planes, and Google offers Cloud Service Mesh as a managed option. The upstream project itself is CNCF-governed with community support.

Istio: Does it work outside Kubernetes?

Partly. Virtual machine workloads can be added to a mesh, but the tooling, documentation and community experience are heavily Kubernetes-centred, so a VM-majority estate is fighting the grain of the project.

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