Amazon Bedrock AgentCore Runtime vs Buddy Sandboxes

Amazon Bedrock AgentCore Runtime costs $0.0895 per vCPU-hour and Buddy Sandboxes costs $0.0144 per vCPU-hour. Amazon Bedrock AgentCore Runtime runs microVMs and limits a session to 8 hours. Buddy Sandboxes runs full VMs and has no session limit.

Updated Oct 23, 2026

Amazon Bedrock AgentCore Runtime

Hosts AI agents on AWS and runs each user session in its own microVM.

Isolation: MicroVM
Free tier: Not listed
Max session: 8 hours

Visit site Amazon Bedrock AgentCore Runtime profile

Buddy Sandboxes

Persistent Linux VMs that AI agents create and control through an API, SDK, CLI or MCP.

Isolation: Full VM
Free tier: $1 of usage credit every month
Max session: No limit

Visit site Buddy Sandboxes profile

What is different

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

Field

Amazon Bedrock AgentCore Runtime

Buddy Sandboxes

vCPU, per hour: Amazon Bedrock AgentCore Runtime: $0.0895; Buddy Sandboxes: $0.0144
RAM, per GiB-hour: Amazon Bedrock AgentCore Runtime: $0.00945; Buddy Sandboxes: $0.0144
Storage: Amazon Bedrock AgentCore Runtime: Session storage is free during preview. Code storage is billed at Amazon ECR or S3 rates; Buddy Sandboxes: $0.00011 per GiB-hour
Paid plan from: Amazon Bedrock AgentCore Runtime: Pay as you go; Buddy Sandboxes: $29 / month
Billing: Amazon Bedrock AgentCore Runtime: Active CPU time only; Buddy Sandboxes: Per second
Max session: Amazon Bedrock AgentCore Runtime: 8 hours; Buddy Sandboxes: No limit
Largest sandbox: Amazon Bedrock AgentCore Runtime: 2 vCPU · 8 GiB; Buddy Sandboxes: 12 vCPU · 24 GiB
Isolation: Amazon Bedrock AgentCore Runtime: MicroVM; Buddy Sandboxes: Full VM
SDKs: Amazon Bedrock AgentCore Runtime: Python, TypeScript; Buddy Sandboxes: TypeScript
Integrations: Amazon Bedrock AgentCore Runtime: Claude Agent SDK, LangChain, MCP, OpenAI Agents SDK; Buddy Sandboxes: MCP, Claude Code

Full comparison

18 fields, at each provider's list price

Amazon Bedrock AgentCore Runtimeaws.amazon.com/bedrock/agentcore/pricingaws.amazon.com

Buddy Sandboxesbuddy.works/docs/basics/billing-and-usage/gbminbuddy.works

Pricing

vCPU, per hour: Amazon Bedrock AgentCore Runtime: $0.0895; Buddy Sandboxes: $0.0144
RAM, per GiB-hour: Amazon Bedrock AgentCore Runtime: $0.00945; Buddy Sandboxes: $0.0144
Storage: Amazon Bedrock AgentCore Runtime: Session storage is free during preview. Code storage is billed at Amazon ECR or S3 rates; Buddy Sandboxes: $0.00011 per GiB-hour
Free tier: Amazon Bedrock AgentCore Runtime: Not listed; Buddy Sandboxes: $1 of usage credit every month
Paid plan from: Amazon Bedrock AgentCore Runtime: Pay as you go; Buddy Sandboxes: $29 / month
Billing: Amazon Bedrock AgentCore Runtime: Active CPU time only; Buddy Sandboxes: Per second

Limits

Max session: Amazon Bedrock AgentCore Runtime: 8 hours; Buddy Sandboxes: No limit
Idle stop: Amazon Bedrock AgentCore Runtime: After 15 minutes; Buddy Sandboxes: Not listed
Largest sandbox: Amazon Bedrock AgentCore Runtime: 2 vCPU · 8 GiB; Buddy Sandboxes: 12 vCPU · 24 GiB
Concurrent sandboxes: Amazon Bedrock AgentCore Runtime: Up to 5,000; Buddy Sandboxes: Not listed

Platform

Isolation: Amazon Bedrock AgentCore Runtime: MicroVM; Buddy Sandboxes: Full VM
GPU: Amazon Bedrock AgentCore Runtime: Not listed; Buddy Sandboxes: Not listed
Snapshots: Amazon Bedrock AgentCore Runtime: Not listed; Buddy Sandboxes:
Pause and resume: Amazon Bedrock AgentCore Runtime:; Buddy Sandboxes:

Developer

SDKs: Amazon Bedrock AgentCore Runtime: Python, TypeScript; Buddy Sandboxes: TypeScript
Integrations: Amazon Bedrock AgentCore Runtime: Claude Agent SDK, LangChain, MCP, OpenAI Agents SDK; Buddy Sandboxes: MCP, Claude Code

Trust

License: Amazon Bedrock AgentCore Runtime: Not listed; Buddy Sandboxes: Not listed
BYOC: Amazon Bedrock AgentCore Runtime: Not listed; Buddy Sandboxes: Not listed

Hourly cost

One sandbox running for one hour

Size

Amazon Bedrock AgentCore Runtime

Buddy Sandboxes

1 vCPU · 2 GiB: Amazon Bedrock AgentCore Runtime: $0.108; Buddy Sandboxes: $0.043
2 vCPU · 4 GiB: Amazon Bedrock AgentCore Runtime: $0.217; Buddy Sandboxes: $0.086
4 vCPU · 8 GiB: Amazon Bedrock AgentCore Runtime: $0.434; Buddy Sandboxes: $0.173

Compute only, at list rates.

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Which one fits

Based on the fields above

Amazon Bedrock AgentCore Runtime fits when

You want to pay only for usage, with no plan fee.
You want each sandbox in its own microVM.
You use the Claude Agent SDK, LangChain or the OpenAI Agents SDK.
Your code waits a lot: CPU is billed only while it is in use.

Buddy Sandboxes fits when

A session must run longer than 8 hours.
You want each sandbox to be a full VM.
You use Claude Code.
You want the lower list price: $0.086 against $0.217 an hour for 2 vCPU and 4 GiB.

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Amazon Bedrock AgentCore Runtime

Buddy Sandboxes

What is different

Full comparison

Pricing

Limits

Platform

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Trust

Hourly cost

Which one fits

Amazon Bedrock AgentCore Runtime fits when

Buddy Sandboxes fits when

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