The best Blacksmith alternatives, compared honestly
Blacksmith makes GitHub Actions dramatically faster and cheaper by swapping one runs-on label — sub-3-second Firecracker microVMs, a 400 MB/s co-located cache, no queueing. But it's one of several strong runner providers, and a pure runner swap doesn't fix Actions itself. Here's the honest field.
The best Blacksmith alternative depends on what's actually hurting:
- Fast runners and an escape from Actions → Buddy — accelerated GitHub runners plus a full visual CI/CD platform.
- Top raw CPU speed → Namespace — leads x64 & ARM benchmarks.
- Container-heavy builds → Depot — distributed Docker layer cache.
- Keep compute in your own cloud → WarpBuild (BYOC) or RunsOn (your AWS).
- Lowest cost → Ubicloud — open-source, from ~$0.0008/min.
Why teams look elsewhere
What sends teams shopping for a Blacksmith alternative
Blacksmith is genuinely good. Teams still compare it — usually for one of these reasons.
Someone else is faster
On x64 and ARM64 single-thread CPU benchmarks, Namespace edges ahead of Blacksmith. If build time is your only metric, the leader shifts by workload.
Cheaper compute exists
Blacksmith is ~33% under GitHub. Ubicloud goes further — open-source runners from ~$0.0008/min — and RunsOn removes the per-minute markup entirely by billing your own AWS.
Data-residency concerns
With managed runners your code, secrets and artifacts run on the vendor's infrastructure. Teams under compliance pressure want compute inside their own cloud account.
Docker builds dominate
If image builds are the bottleneck, a distributed build cache (Depot's specialty) can beat a faster generic runner.
Still stuck on Actions
A runner swap makes Actions faster but keeps you on its YAML, its debugging loop and its model. Some teams want out of Actions, not just a quicker version of it.
The market is shifting
GitHub cut hosted-runner prices in Jan 2026 and walked back its self-hosted fee; BuildJet is shutting down March 2026. Teams re-pick a provider with a stable roadmap.
The shortlist
6 Blacksmith alternatives worth trying
Ranked for the broadest "faster, cheaper CI" intent. Your #1 may differ if you only optimise for one axis — the badges say who wins what.
Accelerated GitHub Actions runners (x86 / ARM / Apple silicon) plus a full visual CI/CD platform. Speed up Actions today, and if the YAML and queueing is the real pain, migrate off Actions at your own pace. Free tier, then €29/mo.
Leads x64 and ARM64 single-thread benchmarks, with remote Docker builders and deep toolchain integration. Credit-based pricing (Team $100/mo). Less of a "one-line and done" story than Blacksmith.
Best-in-class distributed Docker layer caching, and GH Actions runners at $0.004/min (2,000 min free). If image builds dominate your pipeline, Depot often wins. Narrower than a general runner otherwise.
Managed runners or bring-your-own-cloud, with fast networking and many disk configs. Good enterprise breadth. BYOC setup is more work than a hosted drop-in.
Open-source cloud; the lowest managed price here (Linux x64 from ~$0.0008/min, "7× price-performance"), and you can self-host the whole stack. Younger ecosystem than the incumbents.
Self-hosted: ephemeral EC2 per job from one CloudFormation stack. €300/yr license + your AWS bill, no per-minute markup; code and secrets never leave your account. GPU + Windows. AWS-only.
Side by side
Blacksmith alternatives compared
Linux 2-vCPU list price, hosting model and migration effort. Blacksmith is included as the baseline you're comparing against; Buddy is highlighted.
| Platform | Linux /min | Free tier | Hosting model | ARM | More than a runner | Best for |
|---|---|---|---|---|---|---|
| Buddy | Usage-based | ✓ 300 GB-min | Managed + accel. runners | ✓ | ✓ full CI/CD | Escaping Actions, not just speeding it up |
| Blacksmith (baseline) | $0.004 | ✓ 3,000 min | Managed | ✓ | ✗ | DX + observability |
| Namespace | ~$0.0015 | PAYG | Managed | ✓ | ✗ | Fastest raw CPU |
| Depot | $0.004 | ✓ 2,000 min | Managed | ✓ | Docker cache | Container builds |
| WarpBuild | $0.004 | Trial | Managed / BYOC | ✓ | ✗ | Compute in your cloud |
| Ubicloud | ~$0.0008 | PAYG | Managed / self-host | ✓ | ✗ | Lowest cost |
| RunsOn | AWS cost | ✗ | Self-host (your AWS) | ✓ | ✗ | Data residency |
| GitHub-hosted | $0.006 | ✓ 2,000 min | Managed | ✓ | Actions only | Zero-setup default |
Pricing models and free tiers change often — check each vendor for current terms. Compiled July 2026 from each vendor's official pricing pages. Namespace/Ubicloud rates vary by vCPU tier; figures shown are representative small-runner rates.
Official pages: Blacksmith · Namespace · Depot · WarpBuild · Ubicloud · RunsOn · GitHub Actions pricing · Buddy
By the numbers
Price and speed, side by side
The two axes that actually drive a runner switch — cost per minute and raw CPU speed. Blacksmith is marked as the baseline you're comparing.
Linux runner price
USD / minute · representative 2-vCPU tier · lower is cheaper
*RunsOn bills your own AWS spot compute (no per-minute markup); rate varies. Rates verified Jul 2026 from each vendor's pricing page.
CPU speed (x64)
Passmark single-thread, p50 · higher is faster
Independent 30-day p50 benchmark by RunsOn, updated Jul 1 2026. Not every provider is in the dataset (Depot isn't). Higher single-thread score ≈ faster for most CI workloads.
Estimate your monthly runner bill
Drag or type your monthly CI minutes. Free tiers are subtracted; lowest cost is highlighted.
Estimate only. Assumes Linux 2-vCPU list rates (Jul 2026) and ignores cache/storage add-ons. RunsOn includes a ~$27/mo license amortized (€300/yr) plus your AWS spot compute.
Why we rank it first
What makes Buddy the strongest all-round pick
The other tools make GitHub Actions faster. Buddy does that too — and gives you somewhere to go if Actions itself is the problem. That combination is why it tops the list for the broadest case.
Accelerated GitHub runners
Faster, cheaper runners for GitHub Actions across x86, ARM and Apple silicon — the same drop-in speed win the pure-runner tools sell.
An escape hatch, not a dead end
Speed up Actions now, then migrate workflows to Buddy's own pipelines at your pace. No forced rewrite, no permanent lock-in to Actions.
Visual CI/CD, less YAML
Build pipelines in a visual editor or YAML. Debug what a step actually did instead of pushing "fix CI" commits to a YAML file.
Build and deploy anywhere
100+ prebuilt actions ship to any cloud, VPS or bare metal — or to Buddy's own Dev Cloud hosting. Own the build, choose the host.
One platform, not five tools
Runners, pipelines, environments, deployments and preview URLs live together — instead of bolting a runner vendor onto GitHub Actions.
Free to start
A real free tier (300 pipeline GB-min/mo), then Pro at €29/mo and Hyper at €99/mo with SSO. Rated 4.9/5, SOC 2.
A fair call
When Blacksmith is still the right choice
No tool wins every case. Here's the honest line on when to stay and when to look.
Blacksmith is a great fit if…
- You want to stay 100% on GitHub Actions and just make it faster and cheaper.
- A one-line
runs-onswap with nothing else to learn is the whole appeal. - You value the developer experience and per-workflow observability Blacksmith is known for.
- 3,000 free minutes and ~33% off GitHub's rate cover your workload.
Consider an alternative if…
- Actions itself is the pain, not just its speed — Buddy lets you migrate off it gradually.
- You need the absolute fastest CPU (Namespace) or the cheapest compute (Ubicloud).
- Code and secrets must stay in your own cloud — WarpBuild (BYOC) or RunsOn (your AWS).
- Docker image builds are the bottleneck — Depot's distributed cache targets exactly that.
Common questions
Blacksmith alternatives — common questions
What is the best Blacksmith alternative in 2026?
It depends on the real problem. For pure drop-in speed, Namespace leads the CPU benchmarks; Depot is best for container-heavy pipelines where Docker image builds dominate; Ubicloud is the cheapest managed option; WarpBuild lets you keep compute in your own cloud; and RunsOn runs entirely inside your own AWS account. Most are a one-line runs-on change, so trying two or three is cheap.
How does Blacksmith make GitHub Actions faster?
Blacksmith runs Linux and Windows jobs in ephemeral Firecracker microVMs that boot in under 3 seconds, on faster hardware than GitHub-hosted runners. A co-located cache delivers roughly 400 MB/s (about 4× GitHub's cache backend), and there are no concurrency limits, so jobs don't queue. You switch by changing the runs-on label in your workflow YAML.
How much does Blacksmith cost?
As of July 2026, Blacksmith is pay-as-you-go: Ubuntu x64 (2 vCPU) at $0.004/min, Ubuntu ARM at $0.0025/min, Windows x64 at $0.008/min, and macOS M4 at $0.08/min, with 3,000 free minutes a month. That's about 33% under GitHub's per-minute rate; combined with roughly 2× faster hardware, Blacksmith cites 67–75% total cost savings.
Did GitHub start charging for self-hosted runners?
GitHub announced a $0.002-per-minute platform fee on self-hosted runners for March 1, 2026, but postponed it indefinitely after heavy community backlash. As of mid-2026 there's no self-hosted platform fee — self-hosted minutes remain free and you pay only for the compute you run them on. Separately, GitHub cut hosted-runner prices on January 1, 2026 (Linux 2-core to $0.006/min).
Is switching runners hard?
For pure drop-in providers like Blacksmith, Namespace, Depot, WarpBuild and Ubicloud, migration is a one-line change: point the runs-on label at the new runner and keep every other step identical. It takes minutes, not days. RunsOn is a ~10-minute CloudFormation install into your own AWS account.
Is BuildJet still an option?
No. BuildJet announced it's shutting down on March 31, 2026, which is one reason teams are re-evaluating runner providers and favouring ones with a stable, funded roadmap. The active managed alternatives in 2026 are Blacksmith, Namespace, Depot, WarpBuild and Ubicloud, plus the self-hosted RunsOn.