Who offers it

Part of Sizes, regions and hardware, which explains why it matters.

Fully: Modal, Morph, Runtime and Tensorlake. With a catch: Blaxel, Cloudflare Sandbox, Daytona, E2B and Vercel Sandbox. Not at all: Agent 37, Boat, boxd, InstaBox, Lizard, Sandboxer and Sprites.

  • MorphYescores, memory, disk

    docs-confirmed “To create a new snapshot, specify the resource specifications like” Source

  • RuntimeYesany combination in bounds

    Bounded at 16 cores, 64 GiB of memory and 400 GiB of disk.

    docs-confirmed “At most 16 on a paid sandbox, 2 without credit” Source

  • TensorlakeYesany cores and memory

    Memory must sit between 1 GB and 8 GB per core.

    docs-confirmed “allocate between 1 GB and 8 GB of RAM per vCPU” Source

  • BlaxelWith a catchmemory only, cores follow

    The catch: You set the memory and the number of cores is decided for you, so you cannot pick a memory-heavy or core-heavy machine.

    docs-confirmed “a sandbox with 8 GB memory is allocated 4 CPU cores, while one with 16 GB memory is allocated 6 CPU cores.” Source

  • Cloudflare SandboxWith a catchcustom within 4 cores / 12 GiB

    The catch: You can set your own cores and memory, but only inside a ceiling of 4 cores and 12 GB, and each core needs at least 3 GB.

    docs-confirmed “Minimum 3 GiB memory per vCPU” Source

  • DaytonaWith a catchpresets, custom on request

    The catch: You pick from fixed sizes, and anything different needs a custom limit arranged through support.

    docs-confirmed “Sandboxes have 1 vCPU, 1GB RAM, and 3GiB disk by default.” Source

  • E2BWith a catchup to 8 cores / 8 GiB

    The catch: You can choose cores and memory, but only up to 8 of each; more needs a conversation with support.

    docs-confirmed “Max memory” Source

  • Vercel SandboxWith a catcheven cores only, 2 GB each

    The catch: You choose cores in steps of two and each core comes with exactly 2 GB of memory, so memory cannot be set on its own.

    docs-confirmed “Each vCPU includes 2 GB of memory.” Source

  • Agent 37No4 fixed shapes

    Note: You choose from four fixed combinations of cores and memory, and anything else comes back as the nearest shape.

    docs-confirmed “4 vCPU is the ceiling on every instance type.” Source

  • BoatNo4 fixed sizes

    Note: There are four fixed sizes and no way to ask for anything between them.

    docs-confirmed “default is the size that other providers call medium.” Source

  • boxdNo4 fixed sizes

    Note: There are four fixed sizes; naming either cores or memory picks the pair.

    docs-confirmed “Naming either dimension picks the size” Source

  • InstaBoxNofixed pairs by plan

    Note: Each plan sells fixed pairs of cores and memory, and any other combination is refused.

    docs-confirmed “4 vCPUs and 8 GiB of memory by default, the only size on the free plan.” Source

  • LizardNo3 fixed sizes

    Note: There are three fixed sizes and no custom option.

    docs-confirmed “Choose a size when you create a sandbox: Small (2 vCPU / 4 GB), Medium (4 vCPU / 8 GB, the default), or Large (8 vCPU / 16 GB).” Source

  • SandboxerNo4 fixed sizes

    Note: There are four fixed sizes and no custom size.

    docs-confirmed “Moving to a smaller size isn't supported yet.” Source

  • SpritesNoone shape

    Note: There is one shape: 8 cores, memory assigned automatically, and no choice.

    docs-confirmed “The vCPU count and the storage ceiling are fixed; memory is handled automatically.” Source

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