WarpBuild alternatives, for the managed price and the BYOC one

By Daniel Zoghalchali·Latchkey

WarpBuild alternatives have to be priced twice, because WarpBuild sells at two prices: $0.004 a minute for a managed 2 vCPU Linux runner with 8 GB, and a flat $0.002 a minute with no size tiers and the add-ons free when the runners execute inside your own AWS, GCP or Azure account. A vendor that undercuts the first can be double the second, so the useful question is which of the two you are actually on.

Yearly runner meter at 5k to 100k minutes a month: BYOC $120 to $2,400, managed $240 to $4,800 — The WarpBuild meter alone, per year, before the cloud bill. RunsOn charges no meter at all, so its flat license is the line the BYOC bars cross.

The managed side is unremarkable in a good way: rates read on 2026-09-20 run $0.004, $0.008, $0.016, $0.032 and $0.064 for Linux x64 at 2 to 32 vCPU with 4 GB per core, arm64 a quarter cheaper at $0.003, Windows from $0.016 at 4 vCPU, and macOS M4 Pro at $0.08 for 6 vCPU with 14 GB. Billing is per minute. That places it level with Blacksmith on x64 and above Latchkey, Ubicloud and Namespace.

The bring-your-own-cloud side is the distinctive product. One flat rate of $0.002 a minute for Linux, the same for Windows on AWS and Azure, no size tiers at all, and the add-ons that are metered on the managed side, cache storage and snapshots among them, free. WarpBuild calls it the cheapest option and says it is meant for scale, and the honest comparison for it is not another managed vendor.

So this page keeps the two apart. Every alternative below is priced against both columns, and the sizes, caches and setup steps for all eight vendors are in GitHub Actions runner alternatives.

Every alternative, against both WarpBuild prices

Five vendors, each priced against the managed $0.004 and against the BYOC $0.002, both read on 2026-09-20 at 2 vCPU with 8 GB. Read the second column before the first if your runners are already in your own cloud: three of these five have no answer to a flat $0.002 with free add-ons, and the fourth does not meter minutes at all.

Alternative	Against $0.004 managed	Against $0.002 BYOC	Best for	The catch
Ubicloud	70% under at $0.0012	40% under, still fully managed	The lowest managed Linux rate here	Linux x64 only, to 16 vCPU, and its headline cards disagree with its own size table
Latchkey	38% under at $0.0025	25% above	Cutting what re-runs cost rather than what minutes cost	Linux x86_64 only, no BYOC mode, and a plan fee from $5 a month before any minutes
Namespace	Level at 8 GB, 50% under at 4 GB	Level at 4 GB, double at 8 GB	Small shapes and a published concurrency ceiling	Unit minutes, and overage 50% above prepaid once the plan allowance is gone
Blacksmith	Level at $0.004 for Ubuntu x64	Double, with 3,000 free minutes a month	A compile-bound critical path	No bring-your-own-cloud mode at all, and layer caching is $0.50 per GB a month
RunsOn	No per-minute fee	No per-minute fee	High volume with AWS already in-house	A flat annual license from EUR 300, and the EC2 bill, capacity and images are yours

Where the BYOC meter crosses a flat license

The arithmetic is short. A flat $0.002 a minute is $24 a year for every 1,000 minutes a month: $120 a year at 5,000 minutes, $240 at 10,000, $600 at 25,000, $1,200 at 50,000 and $2,400 at 100,000. The managed rate is exactly double each of those, so $240, $480, $1,200, $2,400 and $4,800. None of it includes the cloud bill, which you pay yourself in the BYOC case.

RunsOn's smallest commercial license is EUR 300 a year with no meter, and it publishes its tiers by runner volume rather than by minutes: under 50,000 runners a month for the entry tier, which it says fits about 79% of teams, up to EUR 3,600 a year for over 500,000. Somewhere around 12,500 minutes a month the WarpBuild BYOC meter alone reaches the $300 mark, before any currency conversion, and past that the flat license is the cheaper structure. Below it, the meter is smaller and the setup is lighter.

What the add-ons do to the managed rate

The managed rate is not the whole managed price. WarpBuild publishes cache storage at $0.20 per GB a month, cache write and restore at $0.0001 per operation, snapshot restore at $0.04 per job and snapshot storage at $0.025 an hour per snapshot. Tailscale networking is free. On BYOC all of those are free, which is the part of the flat rate that is easy to miss.

Snapshot restore is the line to model, because it is per job rather than per GB: a pipeline running 2,000 jobs a month that restores a snapshot on each one adds $80 a month, which is more than the runner minutes cost on many of the rows above. Compare it against Blacksmith's sticky disks at $0.50 per GB a month and Depot's cache at $0.20 per GB a month, both of which meter storage rather than events.

What you give up by leaving

Three things, and one of them has no equivalent anywhere in the table. WarpBuild is the only vendor here that sells the same product managed and inside your own cloud account with the same labels, so a team can start managed and move to BYOC without changing vendor. It also sells Docker builders as separate per-minute machines, from $0.06 a minute for 16 vCPU up to $0.88 for 192 vCPU with 2 TB of disk, which is a different purchase from a runner with a layer cache attached.

And it publishes an enterprise claim nobody else makes in these words: a guaranteed 40% infrastructure saving against Actions Runner Controller on Kubernetes, alongside warm pools with a cold start under 10 seconds and a 99.9% uptime SLA. That is its own number, unverified here, and it is aimed squarely at the migration worked through in migrate from Actions Runner Controller.

Switching, in both directions

Runner selection is per job, so every row above is one line on one job and so is coming back. The labels below are the current ones for each vendor, read on 2026-09-20.

.github/workflows/ci.yml

jobs:
  build:
    runs-on: warp-ubuntu-2404-x64-2x         # today, managed
    # runs-on: blacksmith-2vcpu-ubuntu-2404
    # runs-on: depot-ubuntu-24.04
    # runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v5
      - run: npm ci && npm test

If you are leaving because of re-runs: Latchkey

Latchkey sells managed Linux x86_64 runners at $0.0025 a minute for 2 vCPU with 8 GB, $0.005 at 4 vCPU and $0.02 at 16, with 25 GB of cache per repository, 2,000 to 6,000 free minutes a month, and a plan fee from $5 a month that the free minutes do not offset. Against WarpBuild managed that is 38% under; against BYOC it is 25% above.

The reason to look at it is not the rate, then. It is that a transient failure such as a registry rate limit or an out-of-memory kill is diagnosed and retried inside the run rather than billing the failed minutes and the re-run. What it does not have: no BYOC mode, no arm64, no Windows, no macOS, no snapshots, and no published concurrency ceiling.

The short answer

Stay on WarpBuild BYOC if the runners belong in your own cloud and you want somebody else to keep the control plane: at $0.002 flat with free add-ons, only RunsOn is structurally cheaper and only above roughly 12,500 minutes a month. Stay on managed WarpBuild if you use its snapshots, its separate Docker builders or its Windows and macOS cards.

Otherwise the managed rate is the middle of the market. Ubicloud is 70% under it on Linux x64. Blacksmith matches it and adds 3,000 free minutes. Namespace matches it at 8 GB and undercuts it at 4. Latchkey is 38% under it and spends the difference on repairing the runs you would otherwise pay for twice.

Frequently asked questions

How much does WarpBuild cost per minute?

Read on 2026-09-20: managed Linux x64 is $0.004 a minute at 2 vCPU with 8 GB, rising to $0.064 at 32 vCPU, with arm64 at $0.003, Windows from $0.016 at 4 vCPU and macOS M4 Pro at $0.08 for 6 vCPU. Bring-your-own-cloud is a flat $0.002 a minute for Linux and Windows with no size tiers and the add-ons free. Billing is per minute.

Is WarpBuild BYOC cheaper than running your own runners?

It is the same compute bill plus a $0.002 meter, so it is strictly more than self-hosting the same instances and strictly less work. The comparison that matters is against RunsOn, which also runs in your AWS account and charges a flat annual license from EUR 300 instead of a meter. Past roughly 12,500 minutes a month the meter alone exceeds that license fee, before currency conversion.

What is the best WarpBuild alternative for GitHub Actions?

For the lowest managed rate on Linux x64, Ubicloud at $0.0012 a minute. For free standing minutes, Blacksmith at 3,000 a month. For the widest platform range, Namespace. For cache throughput, Depot. For runners in your own AWS account with no per-minute fee at all, RunsOn. For jobs that keep failing on something unrelated to your code, Latchkey.

Do WarpBuild snapshots have an equivalent elsewhere?

Not exactly. Blacksmith sticky disks are the closest idea, a disk that persists between jobs, billed at $0.50 per GB a month rather than $0.04 per restore. Depot keeps its cache and its Docker builders warm instead, at $0.20 per GB a month. On GitHub-hosted and on Latchkey the equivalent is actions/cache, which restores into a fresh machine every time rather than keeping one.