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Reliability

View uptime and incidents

100%Uptime · trailing year

Operational

Last check Nov 13, 2026, 18:02 UTC

3 of 365 days observed · Missing checks are unknown.

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2026-11-11: All passed
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Nov 14, 2025UTCNov 13, 2026

PassedFailures / blipsNo checks

2,800 checks0 failed0 degraded0 excluded

Weekly composite

66.86#5 of 33providers

7/7 days with data · 18 benchmarks contributing

Higher scores are better.

Published Nov 13, 2026 UTC

Compare providers

Availability covers the sandbox monitoring workload, not every Modal service. Gray days have no counted checks. Excluded checks do not affect uptime. The scheduler missed 30 checks across all providers; these are not Modal failures.

The benchmark
report.

All 18 benchmarks behind Modal’s weekly sandbox composite.

Scores and ranks use the published weekly reporting window.

How scoring works

Benchmark results link to Modal’s scorecards and methodology.

Stealth benchmarks show published weekly standings; daily run details stay private.

Soak

Long-running sandbox availability and data integrity under a sustained workload.

Stealth benchmark · Public weekly summary

Score100.00

Rank#1of 31

CPU Burst

Extra CPU capacity available when a workload exceeds its provisioned CPU allocation.

Stealth benchmark · Public weekly summary

Score82.16

Rank#3of 31

Snapshot

Creating a snapshot and restoring a new sandbox from it.

Stealth benchmark · Public weekly summary

Score94.49

Rank#3of 31

OCI Boot TTI

Time from starting a sandbox to successfully executing its first command.

Stealth benchmark · Public weekly summary

Score90.18

Rank#3of 30

Filesystem API Throughput

Throughput of filesystem operations performed through the provider API.

Stealth benchmark · Public weekly summary

Score82.40

Rank#4of 31

filesystem snapshot & restore

Creating and restoring a filesystem snapshot, including verification of restored files.

Stealth benchmark · Public weekly summary

Score87.08

Rank#4of 31

FS I/O

Filesystem read, write and metadata-operation performance inside the sandbox.

Stealth benchmark · Public weekly summary

Score60.89

Rank#4of 31

Snapshot Fanout

Creating multiple independent sandboxes from the same snapshot.

Stealth benchmark · Public weekly summary

Score93.68

Rank#4of 31

Volumes

Persistent-volume performance and data preservation when attached to a new sandbox.

Stealth benchmark · Public weekly summary

Score78.25

Rank#4of 31

Fidelity

Whether files and application state survive a snapshot and restore correctly.

Stealth benchmark · Public weekly summary

Score82.54

Rank#5of 31

Rootfs

Read, write and filesystem-operation performance on the sandbox's root disk.

Stealth benchmark · Public weekly summary

Score84.14

Rank#8of 31

TTI (Burst)

Time to interactive when starting multiple sandboxes concurrently.

Public benchmark

Score90.94

Rank#10of 30

Dax

End-to-end development workloads, including setup, builds and tests.

Public benchmark

Score57.23

Rank#11of 30

Burst Survival

Readiness and continued availability after creating many sandboxes at once.

Stealth benchmark · Public weekly summary

Score98.36

Rank#15of 31

OS Capabilities

Operating-system capabilities available inside the sandbox.

Stealth benchmark · Public weekly summary

Score80.00

Rank#15of 31

CI Capabilities

Capabilities needed to run CI workloads inside a sandbox.

Stealth benchmark · Public weekly summary

Score71.00

Rank#16of 31

Pause Resume

Pausing and resuming a sandbox while preserving its state.

Stealth benchmark · Public weekly summary

Score0.00

Rank#20of 33

CPU

Single-core and multi-core CPU throughput inside the sandbox.

Stealth benchmark · Public weekly summary

Score12.68

Rank#20of 31

Sandboxes

Run a sandboxon Modal.

Reliability

Weekly composite

The benchmark report.

Run a sandbox
on Modal.

The benchmark
report.