Agentic Index
E2B vs Together Code Sandbox (2026)
E2B last verified ·Together Code Sandbox last verified
Both run model generated code in isolated sandboxes for agents and reinforcement learning, and they are sold differently. That verdict is the Agentic Index coverage score, graded from each vendor's own published materials.
E2B is an open source, self serve sandbox platform with Firecracker sandboxes that pause and resume with memory, fork, wake on incoming requests and inject secrets at the egress proxy, plus an MCP gateway, Desktop sandboxes and a free Hobby or $150 Pro plan. Together Code Sandbox, Together AI's successor to the CodeSandbox SDK, builds snapshots from Docker images on Together's servers and starts sandboxes from them, sized from a tenth of a vCPU up to 16, on the same account as Together's model inference, at $0.0446 per vCPU hour with access requested through sales. Choose E2B for a widely used sandbox you can start today with memory, desktops and tools, and Together Code Sandbox when sandboxes should sit beside the models you run on Together.
This comparison is published by Agentic Index, an independent agentic AI vendor research platform. E2B and Together Code Sandbox are each graded against the same 14 capability Agentic Index taxonomy, from the vendor's own public materials under the Agentic Index verification standard, alongside 1,165 researched vendors. No vendor pays for placement and no vendor has reviewed this page. How this evidence is graded
Choose E2B if
- You want to sign up and start without a sales conversation.
- A paused sandbox should resume with its memory and running processes.
- Agents need desktops for computer use.
- More than 200 MCP tools should be available inside the sandbox.
- Sandboxes should wake on their own when a request arrives.
Choose Together Code Sandbox if
- Your models already run on Together AI, and sandboxes should share the account and the bill.
- Environments should be defined as Dockerfiles and built remotely into reusable snapshots.
- Sandboxes should be sized finely, from a tenth of a vCPU up to 16.
- You run Harbor benchmark jobs and want Together's guides for running them in sandboxes.
- Your security review relies on Together AI's SOC 2 Type 2 examination and HIPAA business associate agreements.
| Feature | E E2B |
T Together Code Sandbox |
|---|---|---|
| Action & orchestration | ||
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Integrations & Tool Calling Ability to connect agents to real systems through native integrations, OAuth-authenticated actions, custom tools, APIs, webhooks, or MCP-compatible tools. |
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E2BIntegrations & Tool Calling An agent in a sandbox reaches other systems through a built in MCP gateway that runs inside the sandbox and exposes more than 200 tools from the Docker MCP Catalog (Airtable, GitHub, Browserbase, Exa and others) or custom MCP servers through one interface. Credentials are passed as secrets that resolve at egress instead of living in the sandbox. Sourcedocs.e2b.dev/mcp-gatewayread 2026-11-03 |
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Together Code SandboxIntegrations & Tool Calling No connectors, tool catalog, secrets store or credential brokering for outside systems comes with the sandboxes. Commands run with environment variables the caller passes on each execution, and an agent's code inside the sandbox reaches other systems on its own. Sourcegithub.com/togethercomputer/together-sandbox/blob/main/docs/python-sdk.mdread 2026-11-05 |
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Workflow Orchestration Ability to sequence, branch, retry, route, and combine deterministic workflow nodes with autonomous agent steps. |
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E2BWorkflow Orchestration There is no workflow logic in E2B itself. The customer brings its own orchestration framework, and E2B provides the machine an agent's steps run on (commands, background processes, code contexts), not a runtime that sequences, branches, retries or routes those steps. Forking a sandbox copies its state, which is compute, not workflow logic. Sourcee2b.dev/llms.txtread 2026-11-03 |
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Together Code SandboxWorkflow Orchestration There is no workflow logic in the product. The SDKs start sandboxes, run commands, retry failed API calls with backoff and list sandboxes by status and tag, but sequencing, branching and routing an agent's steps stay in the customer's own code. Sourcegithub.com/togethercomputer/together-sandbox/blob/main/docs/python-sdk.mdread 2026-11-05 |
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Triggers & Channel Coverage How agents wake up and where they work: schedules, webhooks, message events, CRM events, inbox events, chat, email, voice, and collaboration tools. |
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E2BTriggers & Channel Coverage A sandbox can start without the customer's code calling it. With auto resume set, a paused sandbox resumes when activity arrives, so an agent served from a sandbox starts on an inbound request, and E2B's guides deploy agent gateways this way, for example OpenClaw answering Telegram. Sandbox lifecycle events are also pushed to the customer's webhook, signed. There is no scheduler. Sourcedocs.e2b.dev/sandbox/auto-resumeread 2026-11-03 |
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Together Code SandboxTriggers & Channel Coverage Sandboxes start only when the customer's code or the CLI creates them. There is no schedule, webhook or wake on inbound traffic, and a TTL only ends a sandbox. Sourcedocs.together.ai/docs/together-code-sandboxread 2026-11-05 |
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| Knowledge & context | ||
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Knowledge Grounding & RAG Ability to ground agent behavior in company data through document ingestion, retrieval, external knowledge APIs, semantic search, or RAG layers. |
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E2BKnowledge Grounding & RAG There is no retrieval structure over the customer's content, since E2B runs the agent's code. Files uploaded to a sandbox or volume are storage the agent's code can read, not an index a query returns, and the MCP gateway's tools reach outside knowledge sources owned by others. Sourcee2b.dev/llms.txtread 2026-11-03 |
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Together Code SandboxKnowledge Grounding & RAG No retrieval index or knowledge base comes with the sandboxes. Files an agent needs are built into the snapshot or written in at run time, and any retrieval runs in the customer's own code. Sourcedocs.together.ai/docs/together-code-sandboxread 2026-11-05 |
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Memory & State Persistence Ability to persist context across a run, conversation, workflow, user, team, or longer-term memory layer. |
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E2BMemory & State Persistence An agent's working state carries across sessions. A paused sandbox resumes exactly as it was, with filesystem and memory, running processes and loaded variables, and is kept until it is killed. Snapshots and forks copy that state, volumes, in private beta, keep files across sandboxes, and code contexts keep interpreter variables between executions, which the agent's code reads to continue its task. This is machine state the developer manages, with no memory layer of stated types or scope that can be reviewed, edited or deleted as memory. Sourcedocs.e2b.dev/sandbox/persistenceread 2026-11-03 |
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Together Code SandboxMemory & State Persistence Work carries forward through snapshots. A sandbox can be terminated with a snapshot of its filesystem that takes an alias and starts the next sandbox, and many sandboxes can start from one snapshot. Together also promotes hibernation that keeps disk and memory and forks of hibernated sandboxes, which belong to the CodeSandbox SDK it now treats as deprecated. This is machine state the developer manages, with no memory layer of stated scope. Sourcedocs.together.ai/docs/together-code-sandboxread 2026-11-05 |
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| Control & trust | ||
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Human Oversight & Guardrails Approval steps, consent checkpoints, escalation rules, structured guardrails, policy constraints, and pause/resume controls. |
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E2BHuman Oversight & Guardrails There is no approval step, consent checkpoint or escalation to a person for work inside an E2B sandbox. Egress control (allow and deny lists for each sandbox, a proxy the customer runs that fails closed, and access tokens on public URLs) limits what an agent's code can reach, but that is isolation the developer configures, not a point where a person reviews the agent's action. Sourcee2b.dev/enterpriseread 2026-11-03 |
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Together Code SandboxHuman Oversight & Guardrails Work in a sandbox has no approval step, consent checkpoint or escalation to a person. Commands can run in a terminal that accepts input, but nothing holds an agent's action until someone reviews it. Sourcegithub.com/togethercomputer/together-sandbox/blob/main/docs/python-sdk.mdread 2026-11-05 |
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Security, Identity & Governance RBAC, SSO, auditability, encryption, least-privilege tool access, compliance posture, and data handling policy. |
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E2BSecurity, Identity & Governance E2B holds SOC 2 Type II, with the report under NDA in its trust center at trust.e2b.dev, and signs HIPAA Business Associate Agreements on Enterprise plans. Its controls protect the sandbox. Every sandbox is its own Firecracker microVM with its own kernel, egress can be allowed or denied for each sandbox, secrets are injected at the egress proxy so no sandbox holds them, and public sandbox URLs can require an access token. Who inside a customer's organization can do what has no published control yet, since E2B lists single sign on, SCIM and role based access as planned. Sourcee2b.dev/securityread 2026-11-03 |
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Together Code SandboxSecurity, Identity & Governance Together AI has completed a SOC 2 Type 2 examination, supports HIPAA and signs business associate agreements, without naming the products the report covers. Organizations have admin and developer roles, projects have admin and editor roles with open, closed or private visibility, external collaborators can join single projects, and SAML or OIDC single sign on with Okta, Microsoft Entra or Google Workspace comes with Scale and Enterprise accounts. Sandboxes run under the account's Together API key, with no sandbox specific permissions among the roles. Sourcedocs.together.ai/docs/roles-permissions.mdread 2026-11-05 |
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Observability & Auditability Traces, logs, execution histories, metrics, audit events, and debugging detail for production agent behavior. |
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E2BObservability & Auditability The record covers the sandbox, not the agent. Every lifecycle event is available through an events API and delivered as a signed webhook, sandbox metrics report CPU and memory use, template builds keep logs, and on Enterprise OpenTelemetry metrics and logs export to the customer's OTLP endpoint. Prompts, tool calls, retrieved knowledge and outputs cannot be inspected step by step in E2B, since the agent's reasoning runs outside the sandbox, and there is no audit log of user actions apart from the runtime. Sourcee2b.dev/enterpriseread 2026-11-03 |
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Together Code SandboxObservability & Auditability Sandboxes report their status, and command output, file changes and open ports stream back to the caller, with output resumable from a sequence number. No logs, metrics, event history or audit trail of sandbox activity comes with the product. Sourcegithub.com/togethercomputer/together-sandbox/blob/main/docs/python-sdk.mdread 2026-11-05 |
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Deployment & Data Residency Deployment modes and options, including SaaS, dedicated cloud, VPC, on-prem, hybrid, local runtime, and self-hosting. |
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E2BDeployment & Data Residency Three deployment modes share the same SDK, CLI and API. E2B Cloud defaults to Google Cloud us-west1, and AWS us-west-2 and us-east-1 and Google Cloud europe-west1 and asia-southeast1 are available on request on every plan. With BYOC on AWS, Google Cloud or Azure on Enterprise, the data plane runs in the customer's own cloud account. E2B Embed packages the Apache-2.0 runtime for a single node self hosted install, and a private cloud option is in development. Sourcedocs.e2b.dev/faq/egress-ip-rangesread 2026-11-03 |
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Together Code SandboxDeployment & Data Residency The CodeSandbox SDK runs in data centers in the US, Asia Pacific and Europe, but the current SDK has no region parameter or other way to choose where a sandbox runs. Together's private networking and VPC deployments, including EU regions, cover its dedicated inference endpoints rather than sandboxes. Sourcecodesandbox.io/sdkread 2026-11-05 |
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| Solution readiness | ||
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Prebuilt Agents, Templates & Packs Ready-made workflows, packaged employees, templates, blueprints, industry solutions, and role-specific agents that reduce time-to-value. |
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E2BPrebuilt Agents, Templates & Packs Starting points ship with the platform, including sandbox templates for Claude Code, a desktop, Docker and web app stacks, a cookbook of examples ready to run, setup guides for more than thirty agents and frameworks, and open source reference apps, Surf, a computer use agent, and Fragments, a builder that turns a prompt into an app. These are environments and examples a developer builds from, not a browsable catalog of agents a customer adopts. Sourcedocs.e2b.dev/llms.txtread 2026-11-03 |
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Together Code SandboxPrebuilt Agents, Templates & Packs Starting points are snapshots and guides. Snapshots build from any public Docker image or Dockerfile and take reusable aliases, the legacy SDK ships a Universal template, and Together's guides cover running Harbor benchmark jobs and a Tinker with Harbor recipe in sandboxes. These are environments a developer assembles, not prebuilt agents a business adopts. Sourcegithub.com/togethercomputer/together-sandboxread 2026-11-05 |
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| Platform extensibility | ||
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Model Flexibility & Routing Ability to work across multiple foundation models, route tasks to different models, or let buyers bring their own providers and keys. |
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E2BModel Flexibility & Routing Compute is what E2B provides for agents, with the customer bringing its own model and orchestration framework. Sandboxes connect to any LLM and to agents and frameworks such as Claude Code, Codex, the OpenAI Agents SDK, the Vercel AI SDK, LangChain, CrewAI, Mastra and Google ADK. E2B imposes no model, so model choice stays with the customer. Sourcee2b.dev/llms.txtread 2026-11-03 |
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Together Code SandboxModel Flexibility & Routing The customer chooses the models its agents use. Code in a sandbox can call any model, and the same Together account serves models through Together's serverless and dedicated inference, which Together pairs with the sandboxes. Sourcetogether.ai/code-sandboxread 2026-11-05 |
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APIs, SDKs & MCP Extensibility Composability layer: stable APIs, SDKs, MCP tool consumption/serving, custom tools, and integration into internal systems. |
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E2BAPIs, SDKs & MCP Extensibility Outside systems can call E2B through Python and JavaScript/TypeScript SDKs, a CLI, a REST API described by a published OpenAPI 3.1 specification, and custom sandbox templates the customer builds, tags and versions. A public MCP server serves E2B's documentation to agents. Sourcee2b.dev/llms.txtread 2026-11-03 |
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Together Code SandboxAPIs, SDKs & MCP Extensibility Together's CLI and Python and TypeScript SDKs for sandboxes, generated from its OpenAPI specifications, cover snapshot builds, sandbox lifecycle, command execution with streaming, files, file watching, ports, tags and retries. Together offers no MCP server for sandboxes. Sourcegithub.com/togethercomputer/together-sandboxread 2026-11-05 |
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Testing, Debugging & Optimization Testing, debugging, scoring, retries, fallbacks, quality gates, and optimization loops for improving agent workflows before and after deployment. |
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E2BTesting, Debugging & Optimization There are no fixtures, scoring, quality gates or comparison of agent runs. E2B is where evaluations and reinforcement learning run, not how they are scored. It lists reinforcement learning among its workloads and runs NVIDIA NeMo Gym environments in sandboxes, but the datasets, reward functions and scoring belong to the customer's framework. Sourcee2b.dev/llms.txtread 2026-11-03 |
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Together Code SandboxTesting, Debugging & Optimization There are no test cases, scoring or quality gates for an agent's behavior. Sandboxes host evaluation and reinforcement learning runs, with Together's Harbor guides for benchmark jobs, and the datasets and scoring belong to those harnesses. Sourcegithub.com/togethercomputer/together-sandboxread 2026-11-05 |
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| Specialist automation | ||
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Browser & Computer Use Browser, desktop, or remote/local computer control for workflows that cannot be handled through stable APIs alone. |
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E2BBrowser & Computer Use Agents control real desktops hosted by E2B. E2B Desktop sandboxes are Ubuntu machines with an XFCE desktop and preinstalled applications, and the Desktop SDK gives the agent screenshots, mouse, keyboard and scroll, with a live VNC stream so a person can watch. A cloud browser can also run in a sandbox, and Surf is E2B's open source computer use agent built on it. Sourcedocs.e2b.dev/use-cases/computer-useread 2026-11-03 |
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Together Code SandboxBrowser & Computer Use No browser or desktop for an agent to drive comes with the sandboxes. Environments are built from Docker images, and an agent that needs a browser installs and drives one itself. Sourcedocs.together.ai/docs/together-code-sandboxread 2026-11-05 |
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Pricing snapshot
Sourced from the Index pricing dataset · open each vendor's profile for full detail.
| Pricing | E E2B |
T Together Code Sandbox |
|---|---|---|
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Entry price Lowest public entry point |
Hobby is free with a one time $100 credit, and Pro is $150 a month plus per second usage. | Usage based at $0.0446 per vCPU hour and $0.0149 per GiB of RAM an hour, with access to the current SDK requested through Together's sales team. |
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Pricing confidence How public the numbers are |
Public, exact | Public, exact |
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Billing Primary billing axis |
usage | vCPU hours and GiB of RAM hours per sandbox, or VM credits per hour by VM size on the legacy SDK |
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Variable cost Workload / overage exposure |
High variable cost | High variable cost |
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Free tier / trial Try before you buy |
Free tier
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No free tier
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Buying motion Self-serve vs sales call |
Mixed | Mixed |
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Pricing verified When this pricing was last checked |
Product updates
Newest first, each linked to its source.
E2B
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· Security / enterprise
Secrets, now generally available in E2B, keep credentials outside the sandbox: a team stores a credential from its backend, references it by name in a sandbox network rule, and E2B injects the value into the configured HTTPS request headers after the request leaves the sandbox.
Source -
· MCP / tool calling / API
E2B deprecated E2B_ACCESS_TOKEN authentication in favor of E2B_API_KEY.
Source -
· Funding / partnership
E2B joined the Stripe Projects developer preview so agents can discover, provision, and authenticate E2B sandboxes without manual API-key setup.
Source
Together Code Sandbox is a product of Together AI, which acquired CodeSandbox in December 2024. Together now treats the CodeSandbox SDK as deprecated for existing users, while its own Sandbox marketing still promotes that SDK's hibernation and forking.
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