Is Caddy or Lambda better?

Neither clearly leads. Caddy starts at Free and Lambda at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Caddy or Lambda?

Caddy has a free tier; the other does not. Paid plans start at Free for Caddy and On request for Lambda.

Does Caddy or Lambda run on more platforms?

Caddy runs on Linux, macOS, Windows, Docker. Lambda runs on Cloud.

Can I use Caddy for free?

Yes. Caddy has a free tier, so you can try it without paying. Lambda starts at On request.

What is Caddy best used for?

Caddy is most often used for sites and services where expired certificates have caused outages before, small deployments where nginx configuration is more effort than the problem warrants, reverse proxying internal services with tls without a certificate workflow. Of those, sites and services where expired certificates have caused outages before and small deployments where nginx configuration is more effort than the problem warrants are not what Lambda is typically brought in for.

What can Caddy do that Lambda cannot?

Caddy covers Automatic HTTPS, Caddyfile, Reverse proxy, Single binary. Lambda covers Superclusters, 1-Click Clusters, On-demand instances, Liquid cooling.

Cloud · head to head

Caddy vs Lambda

Caddy

Cloud

Web server with automatic HTTPS by default

From: Free
Rated: -

Full review Website

Lambda

Cloud

GPU supercomputers for AI training and inference at enterprise scale

From: On request
Rated: -

Full review Website

The short version

Only Caddy has a free tier, so it costs nothing to try first.
Each has a real cost: Caddy smaller ecosystem than Nginx, so third-party guides and modules are fewer; Lambda no free tier or trial, requiring immediate commitment for testing
They diverge on capability: Caddy covers Automatic HTTPS, Lambda covers Superclusters.

Where they differ

Only the attributes on which Caddy and Lambda actually diverge.

Attributes where Caddy and Lambda differ
Attribute	Caddy	Lambda
Starting price	Free	On request
Pricing model	Open source, no licence fee	Pay-as-you-go hourly pricing with volume discounts for reserved capacity
Free tier	Yes	No
Platforms	Linux, macOS, Windows, Docker	Cloud
Founded	Unknown	2012

Identical on both: 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 Caddy

Automatic HTTPS
Caddyfile
Reverse proxy
Single binary

Only in Lambda

Superclusters
1-Click Clusters
On-demand instances
Liquid cooling
InfiniBand networking
Managed orchestration
Co-engineering support

What people use each for

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

Caddy

Sites and services where expired certificates have caused outages beforenot Lambda
Small deployments where Nginx configuration is more effort than the problem warrantsnot Lambda
Reverse proxying internal services with TLS without a certificate workflownot Lambda

Lambda

Training foundation models at scale with dedicated GPU infrastructurenot Caddy
Large-scale inference serving on enterprise-grade hardwarenot Caddy
Multi-GPU distributed training with InfiniBand networkingnot Caddy
Single-tenant secure compute for regulated industriesnot Caddy
AI lab infrastructure for frontier model developmentnot Caddy

Where each one falls short

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

Caddy

Smaller ecosystem than Nginx, so third-party guides and modules are fewer
Adding plugins means rebuilding the binary rather than loading a module
Under very high throughput Nginx generally still benchmarks ahead
Automatic certificate issuance needs outbound internet access, which complicates air-gapped deployments

Lambda

No free tier or trial, requiring immediate commitment for testing
Single-tenant Superclusters require custom pricing discussions
Pricing complexity across multiple GPU types and cluster sizes
Less suitable for experimentation or small teams with tight budgets

Pricing, plan by plan

Caddy

Free

CaddyFree
- Full functionality
- Commercial use permitted
- Community support

Lambda

On request

1-Click Clusters B200$undefined/hourly
- 16 GPUs: $9.86/GPU/hour
- 256+ GPUs: $8.87/GPU/hour
- 1-year+ reserved discounts available
1-Click Clusters H100$undefined/hourly
- 16 GPUs: $6.16/GPU/hour
- 256+ GPUs: $5.54/GPU/hour
On-Demand Instances B200$undefined/hourly
- SXM6: $6.69/GPU/hour
On-Demand Instances H100$undefined/hourly
- SXM: $3.99/GPU/hour

Which should you pick?

Choose Caddy if

You need automatic https.
You want to start without paying.
You work on Linux, macOS, Windows, Docker.
You also want caddyfile.

Caddy review

Choose Lambda if

You need superclusters.
You work on Cloud.
You also want 1-click clusters.

Lambda review

Questions people ask

Is Caddy or Lambda better?: Neither clearly leads. Caddy starts at Free and Lambda at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Caddy or Lambda?: Caddy has a free tier; the other does not. Paid plans start at Free for Caddy and On request for Lambda.
Does Caddy or Lambda run on more platforms?: Caddy runs on Linux, macOS, Windows, Docker. Lambda runs on Cloud.
Can I use Caddy for free?: Yes. Caddy has a free tier, so you can try it without paying. Lambda starts at On request.
What is Caddy best used for?: Caddy is most often used for sites and services where expired certificates have caused outages before, small deployments where nginx configuration is more effort than the problem warrants, reverse proxying internal services with tls without a certificate workflow. Of those, sites and services where expired certificates have caused outages before and small deployments where nginx configuration is more effort than the problem warrants are not what Lambda is typically brought in for.
What can Caddy do that Lambda cannot?: Caddy covers Automatic HTTPS, Caddyfile, Reverse proxy, Single binary. Lambda covers Superclusters, 1-Click Clusters, On-demand instances, Liquid cooling.

Answered from the vendors’ own pages

Caddy: Is Caddy free?

Yes, open source under the Apache 2.0 licence, free for commercial use.

Lambda: What makes Lambda's infrastructure different?

Lambda offers single-tenant Superclusters with exclusive GPU access, liquid cooling, and NVIDIA Quantum-2 InfiniBand networking. The company is 100% focused on AI infrastructure with co-engineering support from teams who built infrastructure for major AI labs.

Source

Caddy: What does automatic HTTPS mean?

Caddy obtains certificates from Let’s Encrypt or ZeroSSL on first request and renews them before expiry, with no cron job or configuration.

Lambda: How does pricing work for large clusters?

1-Click Clusters pricing ranges from $5.54-$9.86 per GPU/hour depending on GPU type and cluster size, with volume discounts for 256+ GPUs. Reserved capacity is available at custom pricing for 1-year+ commitments.

Source

Caddy: Caddy or Nginx?

Caddy is dramatically simpler to configure and removes certificate management. Nginx has the larger ecosystem and better peak throughput.

Lambda: Which GPU types are available?

Lambda offers NVIDIA B200, H100, A100, and Tesla V100 GPUs. Individual instances range from V100 at $0.79/hour to B200 SXM6 at $6.69/hour. Newer models like Vera Rubin are available in Superclusters.

Source

Caddy vs Lambda

Caddy

Lambda

The short version

Where they differ

What each one covers

Only in Caddy

Only in Lambda

What people use each for

Caddy

Lambda

Where each one falls short

Caddy

Lambda

Pricing, plan by plan

Caddy

Lambda

Which should you pick?

Choose Caddy if

Choose Lambda if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Caddy

More on Lambda

Keep looking

Other head to heads