Sandbox guide

CapabilitiesThe company

Uptime promise (SLA)

A written promise about availability, usually with credits if broken.

1 yes7 with a catch7 no1 not published

Who offers it

Part of Who is behind it, which explains why it matters.

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

  • RuntimeYes99% API

    Every paid account gets 10% of the month's charges back if the API misses 99%.

    pricing-page “Paid accounts are promised 99% API uptime every calendar month.” Source

  • BlaxelWith a catch

    The catch: A standard plan carries no numeric uptime promise; only the Custom plan lists custom SLAs.

    pricing-page “Custom SLAs” Source

  • DaytonaWith a catch99.95%, Tier 4+

    The catch: The 99.95% target exists, but service credits go only to Tier 4 and above.

    docs-confirmed “Daytona will use commercially reasonable efforts to make the Services available 99.95% of the time in any given calendar month” Source

  • E2BWith a catch

    The catch: Uptime and support terms are set in the Enterprise agreement; Hobby and Pro have no public numeric SLA.

    docs-confirmed “Uptime and support terms are set in the Enterprise agreement.” Source

  • InstaBoxWith a catch99.9%, Enterprise

    The catch: A 99.9% promise is listed only on the Enterprise plan, with no published measurement or credits.

    pricing-page “99.9% SLA” Source

  • LizardWith a catch

    The catch: SLAs come with Enterprise support; no public numeric uptime promise exists.

    pricing-page “Dedicated, hands-on support with SLAs” Source

  • SpritesWith a catch

    The catch: Fly's 99.9% promise is for Enterprise plans and credits must be claimed; Sprites coverage is not named.

    docs-confirmed “will apply to the Services for Customers with an Enterprise plan during the applicable Subscription Term” Source

  • Vercel SandboxWith a catch99.99%, Enterprise

    The catch: The 99.99% Enterprise SLA covers the platform and does not name Sandbox.

    docs-confirmed “available 99.99% of the time, excluding any Excused Downtime events” Source

  • Agent 37No

    Note: There is no uptime promise unless you negotiate one in writing.

    docs-confirmed “we do not promise a specific uptime level unless we have agreed to one with you in writing.” Source

  • BoatNo

    Note: The terms disclaim uninterrupted service and no SLA is published.

    docs-confirmed “We do not guarantee that sandbox will be uninterrupted” Source

  • Cloudflare SandboxNo

    Note: The 99.99% Workers SLA covers Workers only, not Containers or Sandboxes.

    docs-confirmed “applies to use of Workers only.” Source

  • MorphNo

    Note: No public uptime target or credit schedule is published; a separately signed SLA would control.

    docs-confirmed “If a separate SLA is attached to the Order, that SLA controls” Source

  • SandboxerNo

    Note: There is no SLA during early access.

    docs-confirmed “There's no SLA during early access” Source

  • TensorlakeNo

    Note: The only published SLA is a 24-hour response to a P1 support ticket, not an uptime promise.

    pricing-page “P1 SLA: 24 hours” Source

  • boxdNot published

    No SLA, uptime target or service credit appears in the terms, FAQ or pricing.

    docs-confirmed “These Terms are drawn up in English.” Source

Related

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