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Cloud · head to head

Cilium vs Render

Cilium logo

Cilium

Cloud

eBPF-based networking, observability and security for Kubernetes

From
Free
Rated
-
Full reviewWebsite
Render logo

Render

Cloud

A modern cloud platform for the next generation

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Cilium requires a recent Linux kernel, which rules out older distributions and some managed environments; Render the free Hobby workspace is limited to 25 services and 5 GB of bandwidth
  • They diverge on capability: Cilium covers eBPF datapath, Render covers Web services.

Where they differ

Only the attributes on which Cilium and Render actually diverge.

Attributes where Cilium and Render differ
AttributeCiliumRender
Pricing modelOpen source, no licence feeusage-based
PlatformsKubernetes, LinuxWeb, Api
FoundedUnknown2019

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Cloud).

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 Cilium

  • eBPF datapath
  • Identity-based policy
  • Hubble observability
  • Sidecar-free mesh

Only in Render

  • Web services
  • Static sites
  • Background workers
  • Postgres database
  • Redis database
  • Scheduled jobs
  • Environment variables
  • Custom domains

What people use each for

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

Cilium

  • Kubernetes networking at a scale where iptables-based CNI performance degradesnot Render
  • Network policy expressed on workload identity rather than fragile IP rulesnot Render
  • Seeing which services actually talk to each other, and what policy is droppingnot Render

Render

  • Deploying web services, static sites and cron jobs from a Git repository without managing serversnot Cilium
  • Running managed Postgres and Redis alongside application servicesnot Cilium
  • Preview environments per pull request for small teamsnot Cilium

Where each one falls short

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

Cilium

  • Requires a recent Linux kernel, which rules out older distributions and some managed environments
  • eBPF is genuinely hard to debug when it misbehaves, and the skill is rare on most teams
  • Broad scope — CNI, policy, mesh, observability — means the learning curve covers several domains at once

Render

  • The free Hobby workspace is limited to 25 services and 5 GB of bandwidth
  • Every paid plan charges the workspace fee plus compute on top, so $25 per month for Pro is a floor rather than a total
  • SAML SSO and SCIM require the Scale plan at $499 per month
  • HIPAA-compliant workspaces, inbound IP rules and advanced RBAC roles are Scale plan features
  • Organization-level audit logs require Scale; Pro provides only workspace audit logs
  • Contractual uptime SLAs, support response SLAs and a technical account manager are Enterprise only, and Enterprise is custom priced with no published rate
  • Included bandwidth is 25 GB on Pro and 1 TB on Scale, with usage beyond that billed separately

Pricing, plan by plan

Cilium

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

Render

Free
  • FreeFree
    • 1 web service
    • 1 static site
    • Shared CPU
  • Starter$7/month
    • Unlimited services
    • Dedicated CPU
    • 2GB RAM

Which should you pick?

Choose Cilium if

  • You need ebpf datapath.
  • You want to start without paying.
  • You work on Kubernetes, Linux.
  • You also want identity-based policy.
Cilium review

Choose Render if

  • You need web services.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want static sites.
Render review

Questions people ask

Is Cilium or Render better?
Neither clearly leads. Cilium starts at Free and Render at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Cilium or Render?
Cilium starts at Free and Render at Free.
Does Cilium or Render run on more platforms?
Cilium runs on Kubernetes, Linux. Render runs on Web, Api.
Can I use Cilium for free?
Both have a free tier, so you can try either at no cost before committing.
What is Cilium best used for?
Cilium is most often used for kubernetes networking at a scale where iptables-based cni performance degrades, network policy expressed on workload identity rather than fragile ip rules, seeing which services actually talk to each other, and what policy is dropping. Of those, kubernetes networking at a scale where iptables-based cni performance degrades and network policy expressed on workload identity rather than fragile ip rules are not what Render is typically brought in for.
What can Cilium do that Render cannot?
Cilium covers eBPF datapath, Identity-based policy, Hubble observability, Sidecar-free mesh. Render covers Web services, Static sites, Background workers, Postgres database.

Answered from the vendors’ own pages

Cilium: Is Cilium free?

Yes, open source and CNCF-graduated. Isovalent sells an enterprise distribution and support.

Render: What is Render's pricing?

Render's pricing details are not disclosed on the public pricing page. The site references workspace plans, compute services, and features but does not display specific costs. Users must visit the pricing page directly or contact Render for detailed information.

Source
Cilium: What does eBPF change?

It lets Cilium run packet-processing programs inside the kernel instead of relying on iptables rule chains, which behave poorly as the number of services grows.

Cilium: Does Cilium replace a service mesh?

It can cover much of what a mesh does without sidecars, though full mesh feature sets still favour Istio or Linkerd.

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