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Runloop

Devboxes, blueprints and eval harnesses aimed at teams training coding agents.

runloop.aidocs.runloop.ai
Overall in sandbox providers
4of 19 · score 76.4
Data coverage
96%
25 of 26 fields sourced

Best for

  • •Running SWE-bench-style evaluation loops at scale
  • •Generating training data from reproducible environments
  • •You want a vendor whose roadmap targets agent researchers

Strong on

  • +Snapshot & fork Yes 1/19
  • +SDKs python, typescript, rest-api, cli 1/19
  • +Runtimes python, javascript-typescript, bash, any-oci-image 2/18

Weak on

  • −Egress control open 15/19
    Better: Daytona: allowlist
  • −Funding seed 9/15
    Better: Fly.io Machines: series-c-plus
  • −Price / hour $0.32/hr 16/17
    Better: boat: $0.018/hr
  • −Cold start (claimed) 1s 8/12
    Better: Blaxel: 25ms

vs E2B

  • •Ahead on Snapshot & fork: Yes vs Partial
  • •Ahead on Persistent FS: Yes vs Partial
  • •Behind on Browser inside: Partial vs Yes
  • •Behind on Funding: seed vs series-a

How Runloop scores among 19 sandbox providers25 of 26 fields known

Runtime13

Cold start
800ms
8/16
Leader: Riza · 120ms
Cold start (claimed)
1s
8/12
Leader: Blaxel · 25ms
docs.runloop.ai · 2026-01-15
Max runtime1st
24h
1/18
Persistent FS1st
Yes
1/19
Snapshot & fork1st
Yes
1/19
docs.runloop.ai · 2026-01-15
Custom images1st
Yes
1/19
docs.runloop.ai · 2026-01-15
GPU
No
6/15
Leader: Modal · Yes
Runtimes2nd
python, javascript-typescript, bash, any-oci-image
2/18
Leader: boat · python, javascript-typescript, bash, go, rust, java, ruby, php, any-oci-image
Preview URLs1st
Yes
1/19
Browser inside3rd
Partial
3/18
Leader: E2B · Yes
File up/download1st
Yes
1/19
docs.runloop.ai · 2026-01-15
Sydney region
No
8/18
Leader: Fly.io Machines · Yes
Concurrent limit
100 sandboxes
5/15
Leader: Vercel Sandbox · 2,000 sandboxes

Isolation & network3

Isolation1st
microvm
1/19
Root in guest1st
Yes
1/19
Egress control
open
15/19
Leader: Daytona · allowlist

Agent integration3

MCP server
Partial
6/18
Leader: Daytona · Yes
SDKs1st
python, typescript, rest-api, cli
1/19
Streaming output1st
Yes
1/17

Pricing3

Price / hour
$0.32/hr
16/17
Leader: boat · $0.018/hr
runloop.ai · 2026-11-07
Meter2nd
per-second
2/19
Leader: Cloudflare Sandbox · per-10ms
Idle cost
storage-only
9/19
Leader: Fly.io Machines · free-when-stopped

Traction2

GitHub stars
—
Funding
seed
9/15
Leader: Fly.io Machines · series-c-plus

Positioning1

Positioning
Infrastructure and evaluation harnesses for teams building coding agents.

Timeline1

Shipped
2024
5/16
Leader: Daytona · 2025

Alternatives8

Compare

Sources2