E2B vs Phonebox
E2B costs $0.0504 per vCPU-hour. E2B runs Firecracker microVMs and limits a session to 24 hours. Phonebox limits a session to 3 hours.
Updated
E2B
- Isolation
- Firecracker microVM
- Free tier
- $100 credit, one time
- Max session
- 24 hours
Phonebox
- Isolation
- Not listed
- Free tier
- $2 starter credit, one time, no card
- Max session
- 3 hours
What is different
7 fields differ. The rest are the same or not listed.
E2B
Phonebox
- Free tier
- E2B: $100 credit, one time
- Phonebox: $2 starter credit, one time, no card
- Paid plan from
- E2B: $150 / month
- Phonebox: Pay as you go
- Billing
- E2B: Per second
- Phonebox: Bundled machine time
- Max session
- E2B: 24 hours
- Phonebox: 3 hours
- Concurrent sandboxes
- E2B: Up to 100
- Phonebox: Up to 5
- SDKs
- E2B: Python, JavaScript / TypeScript
- Phonebox: TypeScript
- Integrations
- E2B: LangChain, OpenAI Agents SDK, Vercel AI SDK, MCP, Claude Code
- Phonebox: MCP
Full comparison
18 fields, at each provider's list price
Phoneboxphonebox
Pricing
- vCPU, per hour
- E2B: $0.0504
- Phonebox: Not listed
- RAM, per GiB-hour
- E2B: $0.0162
- Phonebox: Not listed
- Storage
- E2B: Free
- Phonebox: Not listed
- Free tier
- E2B: $100 credit, one time
- Phonebox: $2 starter credit, one time, no card
- Paid plan from
- E2B: $150 / month
- Phonebox: Pay as you go
- Billing
- E2B: Per second
- Phonebox: Bundled machine time
Limits
- Max session
- E2B: 24 hours
- Phonebox: 3 hours
- Idle stop
- E2B: Not listed
- Phonebox: After 5 minutes
- Largest sandbox
- E2B: 8 vCPU · 8 GiB
- Phonebox: Not listed
- Concurrent sandboxes
- E2B: Up to 100
- Phonebox: Up to 5
Platform
- Isolation
- E2B: Firecracker microVM
- Phonebox: Not listed
- GPU
- E2B: No
- Phonebox: Not listed
- Snapshots
- E2B:
- Phonebox: Not listed
- Pause and resume
- E2B:
- Phonebox:
Developer
- SDKs
- E2B: Python, JavaScript / TypeScript
- Phonebox: TypeScript
- Integrations
- E2B: LangChain, OpenAI Agents SDK, Vercel AI SDK, MCP, Claude Code
- Phonebox: MCP
Trust
- License
- E2B: Apache-2.0
- Phonebox: Not listed
- BYOC
- E2B: Enterprise plan
- Phonebox: Not listed
Hourly cost
One sandbox running for one hour
E2B
Phonebox
- 1 vCPU · 2 GiB
- E2B: $0.083
- Phonebox: Not listed
- 2 vCPU · 4 GiB
- E2B: $0.166
- Phonebox: Not listed
- 4 vCPU · 8 GiB
- E2B: $0.331
- Phonebox: Not listed
Compute only, at list rates.
Open the calculatorWhich one fits
Based on the fields above
E2B fits when
- A session must run longer than 3 hours.
- You want an open-source platform (Apache-2.0) that you can self-host.
- You use LangChain, the OpenAI Agents SDK, the Vercel AI SDK or Claude Code.
- You want the larger free credit: $100 against $2.
Phonebox fits when
- You want to pay only for usage, with no plan fee.
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