Maritime vs Phonebox
Maritime runs Firecracker microVMs. Phonebox limits a session to 3 hours.
Updated
Maritime
- Isolation
- Firecracker microVM
- Free tier
- 3 agents, forever
- Max session
- Not listed
Phonebox
- Isolation
- Not listed
- Free tier
- $2 starter credit, one time, no card
- Max session
- 3 hours
What is different
5 fields differ. The rest are the same or not listed.
Maritime
Phonebox
- Free tier
- Maritime: 3 agents, forever
- Phonebox: $2 starter credit, one time, no card
- Paid plan from
- Maritime: $20 / month
- Phonebox: Pay as you go
- Concurrent sandboxes
- Maritime: Up to 500
- Phonebox: Up to 5
- SDKs
- Maritime: TypeScript, Python
- Phonebox: TypeScript
- Integrations
- Maritime: MCP, Claude Code, Claude Agent SDK, OpenAI Agents SDK, Vercel AI SDK
- Phonebox: MCP
Full comparison
18 fields, at each provider's list price
Maritimemaritime
Phoneboxphonebox
Pricing
- vCPU, per hour
- Maritime: Not listed
- Phonebox: Not listed
- RAM, per GiB-hour
- Maritime: Not listed
- Phonebox: Not listed
- Storage
- Maritime: $2 per extra 5 GB per machine per month on Starter, $0.75 on Dedicated
- Phonebox: Not listed
- Free tier
- Maritime: 3 agents, forever
- Phonebox: $2 starter credit, one time, no card
- Paid plan from
- Maritime: $20 / month
- Phonebox: Pay as you go
- Billing
- Maritime: Not listed
- Phonebox: Bundled machine time
Limits
- Max session
- Maritime: Not listed
- Phonebox: 3 hours
- Idle stop
- Maritime: After 5 minutes
- Phonebox: After 5 minutes
- Largest sandbox
- Maritime: Not listed
- Phonebox: Not listed
- Concurrent sandboxes
- Maritime: Up to 500
- Phonebox: Up to 5
Platform
- Isolation
- Maritime: Firecracker microVM
- Phonebox: Not listed
- GPU
- Maritime: Not listed
- Phonebox: Not listed
- Snapshots
- Maritime: Not listed
- Phonebox: Not listed
- Pause and resume
- Maritime:
- Phonebox:
Developer
- SDKs
- Maritime: TypeScript, Python
- Phonebox: TypeScript
- Integrations
- Maritime: MCP, Claude Code, Claude Agent SDK, OpenAI Agents SDK, Vercel AI SDK
- Phonebox: MCP
Trust
- License
- Maritime: Not listed
- Phonebox: Not listed
- BYOC
- Maritime: Not listed
- Phonebox: Not listed
Hourly cost
One sandbox running for one hour
Maritime
Phonebox
- 1 vCPU · 2 GiB
- Maritime: Not listed
- Phonebox: Not listed
- 2 vCPU · 4 GiB
- Maritime: Not listed
- Phonebox: Not listed
- 4 vCPU · 8 GiB
- Maritime: Not listed
- Phonebox: Not listed
Compute only, at list rates.
Open the calculatorWhich one fits
Based on the fields above
Maritime fits when
- You use Claude Code, the Claude Agent SDK, the OpenAI Agents SDK or the Vercel AI SDK.
- You need a desktop in the sandbox.
Phonebox fits when
- You want to pay only for usage, with no plan fee.
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