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Cloud · head to head

HAProxy vs WarpBuild

HAProxy logo

HAProxy

Cloud

High-performance TCP and HTTP load balancer

From
Free
Rated
-
Full reviewWebsite
WarpBuild logo

WarpBuild

Developer Tools

2x faster, 50% cheaper GitHub Actions runners

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only HAProxy has a free tier, so it costs nothing to try first.
  • Each has a real cost: HAProxy configuration syntax is dense and unforgiving, with a steep initial learning curve; WarpBuild per-minute pricing requires tracking usage to estimate monthly costs
  • They diverge on capability: HAProxy covers High throughput, WarpBuild covers Optimized runner infrastructure.
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which HAProxy and WarpBuild actually diverge.

Attributes where HAProxy and WarpBuild differ
AttributeHAProxyWarpBuild
Starting priceFreeOn request
Pricing modelOpen source, no licence feeUsage-based per minute, varies by runner configuration
Free tierYesNo
PlatformsLinux, Docker, Kubernetes, Self-hostedGitHub Actions, Linux, Windows, macOS, Cloud
CategoryCloudDeveloper Tools

Identical on both: 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 HAProxy

  • High throughput
  • Layer 4 and 7
  • Health checking
  • Rate limiting and ACLs

Only in WarpBuild

  • Optimized runner infrastructure
  • Intelligent caching
  • Incremental builds
  • Multi-architecture support
  • Unlimited concurrency
  • Autoscaling
  • BYOC support
  • Docker builders

What people use each for

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

HAProxy

  • Load balancing at traffic levels where proxy efficiency shows up in the hardware billnot WarpBuild
  • Precise traffic control — rate limits, sticky sessions, complex routing rulesnot WarpBuild
  • TCP load balancing for databases and non-HTTP servicesnot WarpBuild

WarpBuild

  • Accelerating CI builds for teams with high test volumesnot HAProxy
  • Running tests generated by AI coding assistants efficientlynot HAProxy
  • Reducing GitHub Actions costs by 50% or morenot HAProxy
  • Supporting teams that need ARM64 architecture runnersnot HAProxy

Where each one falls short

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

HAProxy

  • Configuration syntax is dense and unforgiving, with a steep initial learning curve
  • No automatic certificate management, unlike newer servers that treat it as default behaviour
  • The built-in stats page is basic, so real observability needs exporters and dashboards
  • A dedicated load balancer is more machinery than small deployments need

WarpBuild

  • Per-minute pricing requires tracking usage to estimate monthly costs
  • Large configuration runners (32 vCPU) expensive at $0.064/min
  • macOS M4 Pro 12-core at $0.16/min is highest-cost option
  • BYOC option requires cloud setup by customer

Pricing, plan by plan

HAProxy

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

WarpBuild

On request
  • Linux x86-64 (2vCPU, 8GB)$0.004/minute
    • 2 vCPU
    • 8 GB RAM
    • Standard performance
  • Linux x86-64 (4vCPU, 16GB)$0.008/minute
    • 4 vCPU
    • 16 GB RAM
    • Increased performance
  • Linux x86-64 (8vCPU, 32GB)$0.016/minute
    • 8 vCPU
    • 32 GB RAM
    • High performance
  • Linux x86-64 (16vCPU, 64GB)$0.032/minute
    • 16 vCPU
    • 64 GB RAM
    • Enterprise performance

Which should you pick?

Choose HAProxy if

  • You need high throughput.
  • You want to start without paying.
  • You work on Linux, Docker, Kubernetes, Self-hosted.
  • You also want layer 4 and 7.
HAProxy review

Choose WarpBuild if

  • You need optimized runner infrastructure.
  • You work on GitHub Actions, Linux, Windows, macOS, Cloud.
  • You also want intelligent caching.
WarpBuild review

Questions people ask

Is HAProxy or WarpBuild better?
Neither clearly leads. HAProxy starts at Free and WarpBuild at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, HAProxy or WarpBuild?
HAProxy has a free tier; the other does not. Paid plans start at Free for HAProxy and On request for WarpBuild.
Does HAProxy or WarpBuild run on more platforms?
HAProxy runs on Linux, Docker, Kubernetes, Self-hosted. WarpBuild runs on GitHub Actions, Linux, Windows, macOS, Cloud.
Can I use HAProxy for free?
Yes. HAProxy has a free tier, so you can try it without paying. WarpBuild starts at On request.
What is HAProxy best used for?
HAProxy is most often used for load balancing at traffic levels where proxy efficiency shows up in the hardware bill, precise traffic control — rate limits, sticky sessions, complex routing rules, tcp load balancing for databases and non-http services. Of those, load balancing at traffic levels where proxy efficiency shows up in the hardware bill and precise traffic control — rate limits, sticky sessions, complex routing rules are not what WarpBuild is typically brought in for.
What can HAProxy do that WarpBuild cannot?
HAProxy covers High throughput, Layer 4 and 7, Health checking, Rate limiting and ACLs. WarpBuild covers Optimized runner infrastructure, Intelligent caching, Incremental builds, Multi-architecture support.

Answered from the vendors’ own pages

HAProxy: Is HAProxy free?

Yes, the community version is open source. HAProxy Technologies sells HAProxy Enterprise separately.

WarpBuild: How much cheaper is WarpBuild compared to GitHub Actions?

WarpBuild offers approximately 50% cost savings compared to GitHub-hosted runners. For example, Linux x86-64 2vCPU/8GB costs $0.004/min with WarpBuild vs $0.008/min with GitHub Actions.

Source
HAProxy: HAProxy or Nginx?

HAProxy is a specialist load balancer with deeper balancing and health-check features. Nginx also serves static content and is more approachable, which is why it is more common as a general web server.

WarpBuild: What is BYOC and how does it differ from managed runners?

BYOC (Bring Your Own Cloud) allows customers to run WarpBuild on their own cloud infrastructure at $0.002/min. Managed runners use WarpBuild's cloud infrastructure. BYOC provides lower costs but requires customer setup.

Source
HAProxy: Does HAProxy handle TLS certificates automatically?

No. Certificate issuance and renewal are external, unlike Caddy where it is automatic.

WarpBuild: Does WarpBuild support ARM64 runners?

Yes, WarpBuild offers ARM64 runners at lower costs than x86-64. Linux ARM64 starts at $0.003/min for 2vCPU/8GB configuration.

Source
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