Skip to main content

Celesto CI / Compare

Celesto vs Tenki CI

Keep GitHub Actions and dependency caching. Celesto costs 87.5% less per minute on the matching 2 vCPU · 4 GB Linux runner: $0.0005 versus $0.004. That's 8× the runtime for the same budget, before credits. Equal CPU and RAM do not mean equal job speed.

Same 2 vCPU · 4 GB runner
8×more CI per dollar
88% less per minute · $0.0005 vs $0.004
Cache storage
Celesto: free
Tenki: $0.20 per GiB each month. Celesto includes up to 25 GB per repo.
At 20,000 minutes
Pay $10, not $80
Celesto: $10. Tenki: $80. Same CPU, RAM, and runtime. Before credits and extra fees.
Install Celesto CISee your monthly bill ↓

8× more CI for the same budget.

Pick a monthly runtime and a runner size.

Runtime per month
Runner size

Lower is better

Celesto Standard2 vCPU · 4 GB$10.00
Tenki CI2 vCPU · 4 GB$80.00

You keep $70.00 a month — or run 8× more CI for the same budget.

List runtime prices before free allowances or credits, at equal runtime on both. Celesto includes $5 in one-time credits. Tenki Starter lists $100 in one-time credits; Team lists $200/month with $100 in monthly credits. Cache storage and plan fees are excluded here. Only the exact 2 vCPU / 4 GB match is shown; larger published sizes have different RAM allocations.

88% less at every matched size shown.

Published Tenki CI Linux x64 sizes with an exact CPU and memory match in the Celesto catalog.

Per-minute Linux x64 runner prices in USD, matched by CPU and memory
HardwareTenki CICelestoCI per dollar
2 vCPU · 4 GB$0.004$0.00058×88% less

Keep actions/cache. Pay less for the runner and no cache storage fee.

A check marks whoever has the edge on that line.

Features of Celesto and Tenki CI, grouped by category
FeatureCelestoTenki CI
Runtime and caching
2 vCPU · 4 GB, per minute$0.0005(Celesto has the edge)$0.004
actions/cacheHosted by Celesto; existing cache steps workHosted by Tenki; existing cache steps work
Cache storageUp to 25 GB per repo, no fee(Celesto has the edge)$0.20/GiB-month; workspace pool shared with snapshots and volumes
Additional cache optionsActions cache APIDependency mirrors and sticky disks (beta)(Tenki CI has the edge)
Platform and workflow
Job isolationFresh microVM per jobSingle-use VM per job
macOSNot availableApple Silicon runners(Tenki CI has the edge)
Container jobsNot supportedSupported(Tenki CI has the edge)
MigrationChange runs-on after GitHub App setupChange runs-on after setup

A check marks the provider with the edge on that feature.

Move Linux CI to Celesto and keep your existing cache steps.

Choose Celesto if

  • You want 8× the Linux runner minutes per dollar on the matched size
  • Your jobs use actions/cache or setup-node/setup-python caching
  • You want up to 25 GB of cache per repository without a storage charge
  • Your coding agents also need Celesto sandboxes, CDP browsers, and MCP tools

Stay on Tenki CI if

  • Your workflow needs macOS or container jobs
  • You rely on dependency mirrors or persistent sticky disks
  • Your initial workload fits within Tenki's larger one-time credit

Switch in one line.

Install the GitHub App, then swap the runner label. Your steps, caches, and logs stay in GitHub Actions.

Runner label
1# Before
2runs-on: tenki-standard-small-2c-4g
3
4# After
5runs-on: [self-hosted, celesto-standard]

Questions.

Yes on the matched Linux runner's list rate: $0.0005/minute versus $0.004/minute for 2 vCPU and 4 GB. That is 87.5% less at equal runtime, before credits and storage. A lower rate does not prove lower cost per completed job; measure your workflow on both.

Yes. Celesto serves actions/cache and the cache options in setup-node, setup-python, and similar actions without changing your cache steps. Cache storage is included up to 25 GB per repository. Docker layer caching is not available.

The published catalogs overlap exactly at 2 vCPU and 4 GB. Tenki's larger x64 sizes have 2 GB of RAM per vCPU; Celesto Large and XL have 4 GB per vCPU. We do not present these as identical configurations. Disk capacity and CPU performance can also differ.

Install the Celesto CI GitHub App and complete setup, then replace runs-on: tenki-standard-small-2c-4g with runs-on: [self-hosted, celesto-standard]. Keep your existing supported Linux steps and cache configuration. Keep macOS and container jobs on a provider that supports them.

We have not published a Celesto-versus-Tenki benchmark. This page compares list runtime rates, not build speed. Run a representative workflow with both cold and warm caches before estimating completed-job savings.

Start with $5 in credits. Rerun your slowest workflow.

Install Celesto CI

Tenki CI details from its public pricing and documentation, checked October 19, 2026: Runner sizes and rates · Plans and credits · Caching and storage. Celesto prices come from the current runner catalog. Rates compare list prices, not measured job speed. Tenki CI is a trademark of its owner; Celesto is not affiliated with it.