Open-source Sendblue Sandboxes alternatives
10 open-source sandbox providers you can use instead of Sendblue Sandboxes. Celesto Cloud has the lowest hourly price, $0.030 for 2 vCPU and 4 GiB.
Updated
Sendblue Sandboxes, for reference
Sendblue SandboxesIsolated cloud Linux machines that AI agents control over an HTTP API.
IsolationContainer
2 vCPU · 4 GiB$0.330 / hr
Free tier$100 free compute
Max sessionNot listed
10 open-source alternatives to Sendblue Sandboxes
Sorted by hourly price for 2 vCPU · 4 GiB, low to high
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$0.030per hour
Containarium Cloud
Hosted Linux boxes for AI agents, reached over SSH.ContainerLower vCPU priceFree tier$0.040per hour
Sandbox0
Long-running agent sandboxes with durable storage.Bills on memory onlyNo session limitgVisor$0.060per hour
Everstack
Open-source platform that runs isolated sandboxes for AI agents.DesktopLower vCPU priceSnapshots and templates$0.133per hour
BoxLite Cloud
Hosted microVM boxes for AI agents, with an SDK.MicroVMLower vCPU priceDisabled on Cloud$0.158per hour
microsandbox cloud
Hosted microVM sandboxes for AI agents and untrusted code.MicroVMLower vCPU priceDisk only, from stopped persistent sandboxes$0.165per hour
Smol Machines
Hosted Linux microVMs with their own kernel, for agents and untrusted code.Bills active CPU onlyMicroVMLower vCPU price$0.165per hour
E2B
Open-source sandbox platform that gives AI agents isolated machines.DesktopFirecrackerLower vCPU price$0.166per hour
PandaStack Sandbox
Firecracker microVM sandboxes for AI agents.Bills active CPU onlyNo session limitFirecracker$0.173per hour
Not listedper hour
Side by side
Sendblue Sandboxes first, then the 10 alternatives
Provider
Isolation
vCPU / hr
GiB / hr
Free tier
Max session
GPU
- Isolation
- Container
- vCPU / hr
- $0.165
- Free tier
- $100 free compute
- Isolation
- MicroVM
- vCPU / hr
- $0.015
- Free tier
- $5 credit
- Isolation
- Container
- vCPU / hr
- $0.020
- Free tier
- Free tier
- Isolation
- gVisor
- vCPU / hr
- Included
- Free tier
- Not listed
- Isolation
- Not listed
- vCPU / hr
- $0.067
- Free tier
- $5 credit
- Isolation
- MicroVM
- vCPU / hr
- $0.050
- Free tier
- $100 credit
- Isolation
- MicroVM
- vCPU / hr
- $0.050
- Free tier
- Free plan
- Isolation
- MicroVM
- vCPU / hr
- $0.050
- Free tier
- $100 credit
- Isolation
- Firecracker
- vCPU / hr
- $0.050
- Free tier
- $100 credit
- Isolation
- Firecracker
- vCPU / hr
- $0.054
- Free tier
- $5.40 / month
- Isolation
- Container
- vCPU / hr
- Not listed
- Free tier
- None
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Container sandboxes
Sandboxes with a free tier