Amazon Bedrock AgentCore Runtime vs Brimble Sandboxes

Amazon Bedrock AgentCore Runtime costs $0.0895 per vCPU-hour. Amazon Bedrock AgentCore Runtime runs microVMs and limits a session to 8 hours. Brimble Sandboxes runs gVisor and limits a session to 6 hours.

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

Brimble Sandboxes

Sandbox product of the Brimble hosting platform that runs code in gVisor containers.

Isolation: gVisor
Free tier: 7-day Developer plan trial, card required
Max session: 6 hours

Visit site Brimble Sandboxes profile

What is different

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

Field

Amazon Bedrock AgentCore Runtime

Brimble Sandboxes

Storage: Amazon Bedrock AgentCore Runtime: Session storage is free during preview. Code storage is billed at Amazon ECR or S3 rates; Brimble Sandboxes: Snapshot storage and persistent volumes bill at storage rates
Paid plan from: Amazon Bedrock AgentCore Runtime: Pay as you go; Brimble Sandboxes: $3 / month
Billing: Amazon Bedrock AgentCore Runtime: Active CPU time only; Brimble Sandboxes: Per second
Max session: Amazon Bedrock AgentCore Runtime: 8 hours; Brimble Sandboxes: 6 hours
Largest sandbox: Amazon Bedrock AgentCore Runtime: 2 vCPU · 8 GiB; Brimble Sandboxes: 4 vCPU · 8 GiB
Concurrent sandboxes: Amazon Bedrock AgentCore Runtime: Up to 5,000; Brimble Sandboxes: Up to 15
Isolation: Amazon Bedrock AgentCore Runtime: MicroVM; Brimble Sandboxes: gVisor
SDKs: Amazon Bedrock AgentCore Runtime: Python, TypeScript; Brimble Sandboxes: JavaScript / TypeScript, Python, Go
Integrations: Amazon Bedrock AgentCore Runtime: Claude Agent SDK, LangChain, MCP, OpenAI Agents SDK; Brimble 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

Brimble Sandboxesbrimble.io/pricing

Pricing

vCPU, per hour: Amazon Bedrock AgentCore Runtime: $0.0895; Brimble Sandboxes: Not listed
RAM, per GiB-hour: Amazon Bedrock AgentCore Runtime: $0.00945; Brimble Sandboxes: Not listed
Storage: Amazon Bedrock AgentCore Runtime: Session storage is free during preview. Code storage is billed at Amazon ECR or S3 rates; Brimble Sandboxes: Snapshot storage and persistent volumes bill at storage rates
Free tier: Amazon Bedrock AgentCore Runtime: Not listed; Brimble Sandboxes: 7-day Developer plan trial, card required
Paid plan from: Amazon Bedrock AgentCore Runtime: Pay as you go; Brimble Sandboxes: $3 / month
Billing: Amazon Bedrock AgentCore Runtime: Active CPU time only; Brimble Sandboxes: Per second

Limits

Max session: Amazon Bedrock AgentCore Runtime: 8 hours; Brimble Sandboxes: 6 hours
Idle stop: Amazon Bedrock AgentCore Runtime: After 15 minutes; Brimble Sandboxes: Not listed
Largest sandbox: Amazon Bedrock AgentCore Runtime: 2 vCPU · 8 GiB; Brimble Sandboxes: 4 vCPU · 8 GiB
Concurrent sandboxes: Amazon Bedrock AgentCore Runtime: Up to 5,000; Brimble Sandboxes: Up to 15

Platform

Isolation: Amazon Bedrock AgentCore Runtime: MicroVM; Brimble Sandboxes: gVisor
GPU: Amazon Bedrock AgentCore Runtime: Not listed; Brimble Sandboxes: Not listed
Snapshots: Amazon Bedrock AgentCore Runtime: Not listed; Brimble Sandboxes:
Pause and resume: Amazon Bedrock AgentCore Runtime:; Brimble Sandboxes:

Developer

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

Trust

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

Hourly cost

One sandbox running for one hour

Size

Amazon Bedrock AgentCore Runtime

Brimble Sandboxes

1 vCPU · 2 GiB: Amazon Bedrock AgentCore Runtime: $0.108; Brimble Sandboxes: Not listed
2 vCPU · 4 GiB: Amazon Bedrock AgentCore Runtime: $0.217; Brimble Sandboxes: Not listed
4 vCPU · 8 GiB: Amazon Bedrock AgentCore Runtime: $0.434; Brimble Sandboxes: Not listed

Compute only, at list rates.

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Which one fits

Based on the fields above

Amazon Bedrock AgentCore Runtime fits when

A session must run longer than 6 hours.
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.

Brimble Sandboxes fits when

You use Claude Code.
You need snapshots.
You need a sandbox larger than 2 vCPU · 8 GiB.

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Amazon Bedrock AgentCore Runtime

Brimble Sandboxes

What is different

Full comparison

Pricing

Limits

Platform

Developer

Trust

Hourly cost

Which one fits

Amazon Bedrock AgentCore Runtime fits when

Brimble Sandboxes fits when

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