LangSmith Sandboxes vs Runta

LangSmith Sandboxes costs $0.0576 per vCPU-hour and Runta costs $0.0504 per vCPU-hour. LangSmith Sandboxes runs Firecracker microVMs. Runta runs full VMs.

Updated Oct 14, 2026

LangSmith Sandboxes

Isolated sandboxes for running agent-generated code.

Isolation: Firecracker microVM
Free tier: Credit of 8 LSU every month
Max session: Not listed

Visit site LangSmith Sandboxes profile

Runta

Isolated computers where AI agents work and keep state.

Isolation: Full VM
Free tier: $50 free credit
Max session: Not listed

Visit site Runta profile

What is different

6 fields differ. The rest are the same or not listed.

Field

LangSmith Sandboxes

Runta

vCPU, per hour: LangSmith Sandboxes: $0.0576; Runta: $0.0504
RAM, per GiB-hour: LangSmith Sandboxes: $0.01845; Runta: $0.0162
Storage: LangSmith Sandboxes: $0.000123 per GiB-hour; Runta: $0.000108 per GiB-hour
Free tier: LangSmith Sandboxes: Credit of 8 LSU every month; Runta: $50 free credit
Isolation: LangSmith Sandboxes: Firecracker microVM; Runta: Full VM
Integrations: LangSmith Sandboxes: LangChain; Runta: OpenAI Agents SDK

Full comparison

18 fields, at each provider's list price

LangSmith Sandboxeslangchain.com/pricinglangchain.com

Runtarunta.com/pricing

Pricing

vCPU, per hour: LangSmith Sandboxes: $0.0576; Runta: $0.0504
RAM, per GiB-hour: LangSmith Sandboxes: $0.01845; Runta: $0.0162
Storage: LangSmith Sandboxes: $0.000123 per GiB-hour; Runta: $0.000108 per GiB-hour
Free tier: LangSmith Sandboxes: Credit of 8 LSU every month; Runta: $50 free credit
Paid plan from: LangSmith Sandboxes: Not listed; Runta: Pay as you go
Billing: LangSmith Sandboxes: Per second; Runta: Per second

Limits

Max session: LangSmith Sandboxes: Not listed; Runta: Not listed
Idle stop: LangSmith Sandboxes: After 10 minutes; Runta: Not listed
Largest sandbox: LangSmith Sandboxes: 16 vCPU · 64 GiB; Runta: Not listed
Concurrent sandboxes: LangSmith Sandboxes: Not listed; Runta: Not listed

Platform

Isolation: LangSmith Sandboxes: Firecracker microVM; Runta: Full VM
GPU: LangSmith Sandboxes: Not listed; Runta: Not listed
Snapshots: LangSmith Sandboxes:; Runta:
Pause and resume: LangSmith Sandboxes:; Runta:

Developer

SDKs: LangSmith Sandboxes: Python, TypeScript; Runta: Python, TypeScript
Integrations: LangSmith Sandboxes: LangChain; Runta: OpenAI Agents SDK

Trust

License: LangSmith Sandboxes: Not listed; Runta: Not listed
BYOC: LangSmith Sandboxes: Enterprise plan; Runta: Not listed

Hourly cost

One sandbox running for one hour

Size

LangSmith Sandboxes

Runta

1 vCPU · 2 GiB: LangSmith Sandboxes: $0.095; Runta: $0.083
2 vCPU · 4 GiB: LangSmith Sandboxes: $0.189; Runta: $0.166
4 vCPU · 8 GiB: LangSmith Sandboxes: $0.378; Runta: $0.331

Compute only, at list rates.

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Which one fits

Based on the fields above

LangSmith Sandboxes fits when

You want each sandbox in its own microVM.
You use LangChain.
You need the sandboxes in your own cloud account.

Runta fits when

You want each sandbox to be a full VM.
You use the OpenAI Agents SDK.
You want the lower list price: $0.166 against $0.189 an hour for 2 vCPU and 4 GiB.
You want the larger free credit: $50 against $8.

More comparisons

See all comparisons

LangSmith Sandboxes

Runta

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

LangSmith Sandboxes fits when

Runta fits when

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