Head-to-head

AWS Bedrock AgentCore vs E2B

Answer in brief

Choose AWS Bedrock AgentCore for teams already on AWS that need IAM- and VPC-integrated code execution for agents; choose E2B for code interpreters and short-to-medium-lived agent tasks that need microVM isolation, with an open-source self-host path. AWS Bedrock AgentCore uses MicroVM (Runtime) isolation; E2B uses Firecracker microVM isolation and is open source.

By the Agent Sandboxes editors · Updated November 8, 2026

AWS Bedrock AgentCore vs E2B at a glance

Attribute	AWS Bedrock AgentCore	E2B
What it is	AWS’s managed agent platform: a Code Interpreter tool for running agent-generated code and a Runtime that hosts each agent session in its own microVM.	Open-source cloud sandboxes for AI agents, each a Firecracker microVM, with pause/resume, snapshots and forking.
Isolation	Runtime: a dedicated microVM per user session with isolated CPU, memory and filesystem, sanitized after the session. Code Interpreter: documented as a containerized environment within AgentCore	Firecracker microVM with its own kernel per sandbox
Open source	No	Yes (Apache-2.0)
Self-host / BYOC	No / No	Yes / Yes
SDKs	Python (AgentCore SDK), AWS SDKs, AWS CLI	Python, JavaScript/TypeScript
Cold start (vendor claim)	No numeric claim; Runtime v2 restores from snapshots for consistent cold starts	Not documented
Max session	Code Interpreter: 15 min default, up to 8 hours. Runtime microVMs: up to 8 hours, stop after 15 min idle	Up to 1 hour continuous (Hobby), 24 hours (Pro) or custom (Enterprise); pausing resets the clock and paused sandboxes are kept until deleted
Persistence	State persists between executions within a session; Runtime can persist filesystem across stop/resume (managed session storage in preview). Large files via S3	Pause/resume preserves filesystem and memory; snapshots of running sandboxes, forking from a snapshot, filesystem-only snapshots, auto-resume and volumes (beta)
GPU	Not for Code Interpreter or Runtime microVMs; the separate Runtime “Instances” compute type supports GPUs	No — sandboxes are CPU-only
Networking	Code Interpreter network modes: Sandbox (isolated) or Public; VPC connectivity supported	Internet on by default; can be disabled or restricted with allow/deny lists of IPs, CIDRs and domains; public sandbox URLs for exposed ports; custom domains and published egress IPs
Pricing	Code Interpreter: $0.0895 per vCPU-hour + $0.00945 per GB-hour, billed per second; CPU billed on actual consumption (not during I/O wait), memory on peak	Per second: $0.000014 per vCPU-second (~$0.050/vCPU-hour) + $0.0000045 per GiB-second (~$0.016/GiB-hour). Pro plan $150/month plus usage; Enterprise from $3,000/month
Compliance	HIPAA eligible per AWS FAQ; further attestations described as in progress	SOC 2 Type II; HIPAA BAA and DPA available on request
Best for	Teams already on AWS that need IAM- and VPC-integrated code execution for agents	Code interpreters and short-to-medium-lived agent tasks that need microVM isolation, with an open-source self-host path

Verified November 8, 2026 from each provider’s documentation. Cold-start figures are vendor claims, not our measurements.

Which should you choose?

Choose AWS Bedrock AgentCore if…

You are already on AWS and want IAM, VPC and CloudTrail integration
You need long-running sessions (up to 8 hours)
You want consumption-based CPU billing that skips I/O wait

Choose E2B if…

You want the most widely integrated agent sandbox, with a large ecosystem of examples
You need Firecracker microVM isolation for untrusted multi-tenant code
You want an open-source codebase you can self-host or run via BYOC
You want ready-made code-interpreter and desktop SDKs

Both are worth piloting with your own image and region. See the full AWS Bedrock AgentCore profile and E2B profile, or the complete comparison.

Frequently asked questions

Is AWS Bedrock AgentCore or E2B better for AI agents?

Neither is better for every workload. AWS Bedrock AgentCore is best for teams already on AWS that need IAM- and VPC-integrated code execution for agents. E2B is best for code interpreters and short-to-medium-lived agent tasks that need microVM isolation, with an open-source self-host path.

Which is open source, AWS Bedrock AgentCore or E2B?

E2B is open source (Apache-2.0); AWS Bedrock AgentCore is not.

How do AWS Bedrock AgentCore and E2B isolate code?

AWS Bedrock AgentCore: Runtime: a dedicated microVM per user session with isolated CPU, memory and filesystem, sanitized after the session. Code Interpreter: documented as a containerized environment within AgentCore. E2B: Firecracker microVM with its own kernel per sandbox.

Sources

Cite this page

Agent Sandboxes. (2026). AWS Bedrock AgentCore vs E2B. agentsandboxes.org. Last reviewed November 8, 2026. https://agentsandboxes.org/compare/aws-agentcore-vs-e2b/

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