Amazon Bedrock AgentCore Runtime vs Tenki Sandbox

Amazon Bedrock AgentCore Runtime costs $0.0895 per vCPU-hour and Tenki Sandbox costs $0.0504 per vCPU-hour. Amazon Bedrock AgentCore Runtime runs microVMs and limits a session to 8 hours. Tenki Sandbox runs full VMs.

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

Tenki Sandbox

Disposable Linux VMs for AI agents, driven by SDK or CLI.

Isolation: Full VM
Free tier: $100 credit, one time ($50 at sign-up, $50 when you add a payment method)
Max session: Not listed

Visit site Tenki Sandbox profile

What is different

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

Field

Amazon Bedrock AgentCore Runtime

Tenki Sandbox

vCPU, per hour: Amazon Bedrock AgentCore Runtime: $0.0895; Tenki Sandbox: $0.0504
RAM, per GiB-hour: Amazon Bedrock AgentCore Runtime: $0.00945; Tenki Sandbox: $0.0162
Storage: Amazon Bedrock AgentCore Runtime: Session storage is free during preview. Code storage is billed at Amazon ECR or S3 rates; Tenki Sandbox: $0.000108 per GiB-hour after 5 free GiB
Paid plan from: Amazon Bedrock AgentCore Runtime: Pay as you go; Tenki Sandbox: $200 / month
Billing: Amazon Bedrock AgentCore Runtime: Active CPU time only; Tenki Sandbox: Per second
Largest sandbox: Amazon Bedrock AgentCore Runtime: 2 vCPU · 8 GiB; Tenki Sandbox: 16 vCPU · 64 GiB
Concurrent sandboxes: Amazon Bedrock AgentCore Runtime: Up to 5,000; Tenki Sandbox: Up to 100
Isolation: Amazon Bedrock AgentCore Runtime: MicroVM; Tenki Sandbox: Full VM
SDKs: Amazon Bedrock AgentCore Runtime: Python, TypeScript; Tenki Sandbox: Python, TypeScript, Go
Integrations: Amazon Bedrock AgentCore Runtime: Claude Agent SDK, LangChain, MCP, OpenAI Agents SDK; Tenki Sandbox: MCP, Claude Code

Full comparison

18 fields, at each provider's list price

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

Tenki Sandboxtenki.cloud/pricingtenki.cloud

Pricing

vCPU, per hour: Amazon Bedrock AgentCore Runtime: $0.0895; Tenki Sandbox: $0.0504
RAM, per GiB-hour: Amazon Bedrock AgentCore Runtime: $0.00945; Tenki Sandbox: $0.0162
Storage: Amazon Bedrock AgentCore Runtime: Session storage is free during preview. Code storage is billed at Amazon ECR or S3 rates; Tenki Sandbox: $0.000108 per GiB-hour after 5 free GiB
Free tier: Amazon Bedrock AgentCore Runtime: Not listed; Tenki Sandbox: $100 credit, one time ($50 at sign-up, $50 when you add a payment method)
Paid plan from: Amazon Bedrock AgentCore Runtime: Pay as you go; Tenki Sandbox: $200 / month
Billing: Amazon Bedrock AgentCore Runtime: Active CPU time only; Tenki Sandbox: Per second

Limits

Max session: Amazon Bedrock AgentCore Runtime: 8 hours; Tenki Sandbox: Not listed
Idle stop: Amazon Bedrock AgentCore Runtime: After 15 minutes; Tenki Sandbox: Not listed
Largest sandbox: Amazon Bedrock AgentCore Runtime: 2 vCPU · 8 GiB; Tenki Sandbox: 16 vCPU · 64 GiB
Concurrent sandboxes: Amazon Bedrock AgentCore Runtime: Up to 5,000; Tenki Sandbox: Up to 100

Platform

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

Developer

SDKs: Amazon Bedrock AgentCore Runtime: Python, TypeScript; Tenki Sandbox: Python, TypeScript, Go
Integrations: Amazon Bedrock AgentCore Runtime: Claude Agent SDK, LangChain, MCP, OpenAI Agents SDK; Tenki Sandbox: MCP, Claude Code

Trust

License: Amazon Bedrock AgentCore Runtime: Not listed; Tenki Sandbox: Not listed
BYOC: Amazon Bedrock AgentCore Runtime: Not listed; Tenki Sandbox: Not listed

Hourly cost

One sandbox running for one hour

Size

Amazon Bedrock AgentCore Runtime

Tenki Sandbox

1 vCPU · 2 GiB: Amazon Bedrock AgentCore Runtime: $0.108; Tenki Sandbox: $0.083
2 vCPU · 4 GiB: Amazon Bedrock AgentCore Runtime: $0.217; Tenki Sandbox: $0.166
4 vCPU · 8 GiB: Amazon Bedrock AgentCore Runtime: $0.434; Tenki Sandbox: $0.331

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.

Tenki Sandbox fits when

You want each sandbox to be a full VM.
You use Claude Code.
You want the lower list price: $0.166 against $0.217 an hour for 2 vCPU and 4 GiB.
You need snapshots.

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Amazon Bedrock AgentCore Runtime

Tenki Sandbox

What is different

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