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One container, all month1 vCPU, 1 GiB, running all month, a quarter of its CPU busy, at each host's published rates, read 18 Oct 2026.How Containers are billed →

  • Runtime$9.90

  • Railway$16

  • Render$25

  • Fly.io$33

  • Heroku$50

Runs any image

Next to the namesyou know.

RuntimeRailwayRenderFly.ioHeroku
Cost a monthThe same container$9.90$16$25$33$50
Stops billing when idle, with sleepPartly
Bills only the CPU used
Any OCI image, any registryPartlyPartly
Wakes on an incoming requestPartlyPartly

Each host as its own pricing page and docs said it, read from 18 Oct 2026 to 6 November 2026. How Containers are billed

Built to stay up.Nothing to set up.

  1. 01Its digest, pinnedA retry runs the digest it resolved, wherever the tag has moved.
    image
    nginx:1.27-alpine
    digest
    sha256:4ff1…9c2e
    retry
    same digest
  2. 02Docker's rulesThe image's own entrypoint and command, as Docker runs them.

    Entrypoint ["/docker-entrypoint.sh"]

    Cmd ["nginx", "-g", "daemon off;"]

    ✓ listening on :80

  3. 03Started againA process that serves a port is started again if it exits.

    workerIt serves a port

    1. Running
    2. Exited
    3. ✓ Started again
  4. 04Values never answeredA container answers its environment's names, never a value.

    DATABASE_URL✓ name only

    REDIS_URL✓ name only

    the valuenever returned

  5. 05Its own kernelA Firecracker microVM for every container, nothing shared.
    isolation
    microVM
    vcpus
    1 to 16
    memory
    up to 64 GiB
  6. 06Billed for the CPU it uses$0.025 an active vCPU-hour, $0.0075 a GiB-hour.

    Busy 25%: CPU billedIdle 75%: memory only

    0%25%50%75%100%

Keep your image.Change one command.

  1. 01Sign inStart free, no card.Start free
  2. 02Change one lineIn terminal.
    Removed: docker run -d --name web -p 80:80 nginx:1.27-alpineAdded: npx withruntime containers create nginx:1.27-alpine --vcpu 1 --memory 512 --name web
  3. 03It runsSame code, a smaller bill.✓ Live on Runtime

Ready for production.From your first container.

28,000+

SDK installs last month, on npm and PyPI

  • FirecrackerThe isolation behind AWS Lambda
  • Your own keyEncrypted per organization
  • Secrets stay outsideAdded on the way out
  • SSO and audit logSAML, OIDC and SCIM

Questions.Answered.

Anything else? Ask us

What does a container cost?

What a sandbox of its size costs: $0.025 per active vCPU-hour for the CPU it uses and $0.0075 per GiB-hour of memory while it runs. Containers have no price of their own. More

What runs, exactly?

The image's own entrypoint and command, by Docker's rules: entrypoint replaces Entrypoint and drops Cmd, command replaces Cmd. Env adds to the image's. More

What happens when the process exits?

It starts again if it serves a port, and stops otherwise. onExit says otherwise. More

Does it ever sleep?

Only when made with sleep: true. Then it pauses after 300 seconds with nothing happening, memory kept, and wakes on the next request. More

How large can one be?

1 to 16 vCPUs and 128 MiB to 64 GiB of memory, as a sandbox. An account with credit keeps up to 20. More

Your containers,up to 5× cheaper.

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