Celesto vs Ubicloud
Celesto costs 47% less per Linux runtime minute than Ubicloud's published standard x64 rate at matching CPU and RAM. Ubicloud adds monthly credit, ARM support, bigger runners, and an optional premium CPU fleet.
List rates before allowances and credits; checked November 1, 2026. Sources and assumptions
- Same 2 vCPU · 8 GB runner
- 1.9×more CI per dollar
- 47% less per minute · $0.00067 vs $0.0013
- Standard x64 list rate
- 47% less
- Celesto versus Ubicloud standard at matched CPU and RAM, before credits. Premium Ubicloud rates are higher.
- Celesto entry size
- 1 vCPU
- Micro has 2 GB RAM. Ubicloud's published GitHub runner catalog starts at 2 vCPU.
Compare list runtime costs.
Pick a monthly runtime and a runner size.
List runtime costs before allowances, credits, plan fees, or add-ons, assuming equal runtime. The chart uses Ubicloud's lower published standard x64 rates, not its default premium fleet. Premium costs $0.002/min at 2 vCPU, $0.004 at 4, and $0.008 at 8. Ubicloud applies a $2.50 monthly credit; Celesto has a one-time $5 trial. Ubicloud's April 2026 announcement says standard x64 is unavailable to new customers, while its pricing docs describe a standard-fleet setting: confirm account eligibility. Credits, premium fallback, job duration, and preparation and cleanup runtime change actual bills. Equal CPU and RAM allocations do not establish equal machine performance. These are not predicted bills or measured job performance. Sources and checked date.
Lower is better
Celesto Memory2 vCPU · 8 GB$13.33
Ubicloud2 vCPU · 8 GB$25.00
List-price difference before allowances: $11.67 per month.
Prices by runner size.
Published Ubicloud Linux x64 sizes with an exact CPU and memory match in the Celesto catalog.
| Hardware | Celesto | Ubicloud | CI per dollar |
|---|---|---|---|
| 2 vCPU · 8 GB | $0.00067/min | $0.0013/min | 1.9×47% less |
| 4 vCPU · 16 GB | $0.0013/min | $0.0025/min | 1.9×47% less |
| 8 vCPU · 32 GB | $0.0027/min | $0.005/min | 1.9×47% less |
Lower Linux list rates, even against Ubicloud's standard fleet.
A check marks whoever has the edge on that line.
| Feature | Celesto | Ubicloud |
|---|---|---|
| Price | ||
| 2 vCPU · 8 GB standard x64, per minute | $0.000667(Celesto has the edge) | $0.00125 standard / $0.002 premium |
| Free usage | $5 one-time trial credit | $2.50 monthly credit(Ubicloud has the edge) |
| Smallest published runner | 1 vCPU · 2 GB(Celesto has the edge) | 2 vCPU · 8 GB x64 |
| Compute | ||
| Linux x64 sizes | 1 to 8 vCPU | 2 to 30 vCPU(Ubicloud has the edge) |
| Native ARM | Not supported | Ampere Altra runners(Ubicloud has the edge) |
| Disk at 2 vCPU x64 | 40 GiB | 75 GB(Ubicloud has the edge) |
| Ubuntu releases | 24.04 | 22.04, 24.04, 26.04(Ubicloud has the edge) |
| GitHub Actions compatibility | Existing compatible steps; change runs-on | Existing compatible steps; change runs-on |
Price
- 2 vCPU · 8 GB standard x64, per minute
- Celesto$0.000667 Has the edge
- Ubicloud$0.00125 standard / $0.002 premium
- Free usage
- Celesto$5 one-time trial credit
- Ubicloud$2.50 monthly credit Has the edge
- Smallest published runner
- Celesto1 vCPU · 2 GB Has the edge
- Ubicloud2 vCPU · 8 GB x64
Compute
- Linux x64 sizes
- Celesto1 to 8 vCPU
- Ubicloud2 to 30 vCPU Has the edge
- Native ARM
- CelestoNot supported
- UbicloudAmpere Altra runners Has the edge
- Disk at 2 vCPU x64
- Celesto40 GiB
- Ubicloud75 GB Has the edge
- Ubuntu releases
- Celesto24.04
- Ubicloud22.04, 24.04, 26.04 Has the edge
- GitHub Actions compatibility
- CelestoExisting compatible steps; change runs-on
- UbicloudExisting compatible steps; change runs-on
Choose low runtime costs for the Linux jobs you run every day.
Choose Celesto if
- You want 47% lower list runtime rates than Ubicloud standard at matched CPU and RAM
- You want smaller 1-vCPU options for light Linux jobs
- Your workloads fit within 8 vCPU and 32 GB
- You want to evaluate CPU-heavy jobs against your own reproducible workflow before committing
Stay on Ubicloud if
- Your monthly usage fits within Ubicloud's recurring $2.50 credit
- You need native ARM or runners above 8 vCPU
- Premium Ryzen CPUs or larger local disks materially shorten your jobs
- You need Ubuntu 22.04 or 26.04 runner images
Switch in one line.
Install the GitHub App, then swap the runner label. Keep compatible workflow steps and cache configuration; logs stay in GitHub Actions. Celesto stores caches separately, so expect an initial cache miss.
Runner label
1# Before
2runs-on: ubicloud-standard-2
3
4# After
5runs-on: [self-hosted, celesto-memory]Questions.
Linux x64 jobs include actions/cache and setup-node/setup-python caching without changes to compatible cache steps. Cache storage has no separate charge. Default per-repository limits are 5 GiB on trial and promotional credit and 25 GiB on paid credit; caches expire after 7 idle days. CI runtime consumes workspace credit.
Docker Engine, Buildx, and Compose are preinstalled. Docker builds, Compose workflows, and GitHub service containers are verified. Validate Docker actions and whole-job containers before migrating. Docker’s explicit --cpus flag failed the documented preflight.
No. Each job starts fresh. Use registry caches or portable archives through actions/cache to reuse layers. Direct BuildKit type=gha,version=2 cache export failed the documented preflight.
At 2 vCPU and 8 GB, Celesto costs $0.000667/min versus Ubicloud's published standard x64 rate of $0.00125/min, about 47% less before credit. Ubicloud's default premium fleet costs $0.002/min at that size. Ubicloud includes $2.50 monthly credit, so small bills can favor Ubicloud. Compare actual duration and credit use, not only list rates.
No. Ubicloud documents AMD EPYC 9454P standard runners and Ryzen 9 7950X3D premium runners. Premium is enabled by default and can fall back to standard capacity, with billing based on the fleet used. Its April 2026 price announcement says standard x64 is unavailable for new customers, while pricing docs describe disabling premium in settings. Confirm availability and rates for your account.
We have not published matched machine or network benchmarks against Ubicloud. Its documentation describes EPYC and Ryzen CPUs, NVMe storage, and high-speed networking. The list-rate advantage shown here does not establish faster completed jobs. Benchmark checkout, dependency restoration, compilation, and artifact transfer on your workload.
Sources and assumptions
Ubicloud pricing and capabilities checked November 1, 2026. Sources, including current Celesto CI documentation: Celesto CI dependency caching · Celesto CI Docker and services · Ubicloud current pricing · Ubicloud runner hardware and labels · Ubicloud price and availability announcement. Celesto prices come from the current runner catalog. Rates compare list prices, not measured job speed. Ubicloud is a trademark of its owner; Celesto is not affiliated with it.