The E2B Insider’s Guide
Everything we know about E2B in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
E2B
The Insider’s Guide
Cloud sandboxes where AI agents run code and tools
Every plan, grade, refund rule and rival among AI agents, read from E2B’s own pages.
Made by FoundryLabs, inc. (E2B) · checked Nov 12, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from E2B’s own pages, its app-store listings and our grades. Every fact in it is on E2B’s page too, where it is kept up to date. Checked Nov 12, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
1.8
GPA, above 11 of the 101 other AI agents we grade
E2B runs an isolated machine for each agent session, so an AI agent can execute code, use a shell and filesystem, and reach tools without touching your own systems. It is used through Python and JavaScript SDKs and runs on E2B's cloud or inside your own AWS, GCP or Azure account. The sandbox runtime is open source under Apache-2.0.
To get you started, here are 9 things to know about E2B, taken from its own pages and our grades.
It is used through the SDK and API, with a console beside it.
- 1
Best for secure sandboxes for running AI-written code
E2B runs isolated sandboxes for code that AI agents write, through Python and JavaScript SDKs.
- 2
Paid plans start at $150 a month
As its pricing page puts it: $150 per month, plus per-second sandbox usage.
- 3
You can try it first
Free Hobby tier with a one-time $100 usage credit, no credit card required. Credits do not renew.
- 4
It runs on Web
Web.
- 5
Isolated sandbox per session
Each agent session gets its own microVM with a shell, filesystem, network and an optional browser or desktop.
- 6
Snapshots and pause
Sandboxes start from a snapshot, and a sandbox can be paused and resumed from the same state.
- 7
Python and JavaScript SDKs
The sandbox is created and controlled from code with the e2b package for Python or npm.
- 8
A 1.8 GPA, above 11 of 101
That is against the other AI agents we grade, on value, the free plan, features, ease of use and platforms.
- 9
Keep it
To replace E2B you would be making an AI agent, with the models and the safeguards behind it. That is not a weekend's work, with an AI app builder or without one.
E2B at a glance
- Pricing
- Free trial, from $150 per month, plus per-second sandbox usage
- Free plan
- No
- Free trial
- Free Hobby tier with a one-time $100 usage credit, no credit card required. Credits do not renew.
- Runs on
- Web
- Made by
- FoundryLabs, inc. (E2B)
- Category
- AI Agents
- Our grade
- 1.8 GPA, weak
The report card
Best for secure sandboxes for running AI-written code
E2B runs isolated sandboxes for code that AI agents write, through Python and JavaScript SDKs. Hobby is a one-time $100 credit and Pro is $150 a month plus usage by the second. It is infrastructure for developers, and more concurrent sandboxes cost $500 to $1,000 a month on top.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | D | Pro is $150 a month plus usage by the second, far above the $52 where the dearest tenth begins. |
| Free plan and trial | C | Hobby is a one-time $100 credit with no card, and credits do not renew, so it is a trial and not a free plan. |
| Features | C | Sandboxes, snapshots, pause, bring-your-own-cloud and MCP tools, though Hobby caps sessions at 1 hour and 10 concurrent sandboxes. |
| Ease of use | D | No store rating on record. It is used through the SDK and API, with a console beside it. |
| Platforms and integrations | B | Web only, with six integrations, Python and JavaScript SDKs and bring-your-own-cloud. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who E2B is for
- Fits if you build agents that run code and need an isolated place to run it
- Works for a developer who wants a $100 credit before paying
Who it is not for
- Pricey if you move to Pro: $150 a month before any sandbox usage
- Watch out: a default 2 vCPU sandbox is billed at $0.000028 a second and memory separately
- Tight if you scale: 600 or 1,100 concurrent sandboxes add $500 or $1,000 a month
- Not for you if you need a free allowance that renews, as the $100 credit does not
- Skip it if you want a no-code product, as it is used through SDK and API
Good to know
Good for
- Teams building coding or data-analysis agents that must execute untrusted code
- Developers who want the open-source runtime and an SDK-first workflow
- Companies that need sandboxes inside their own cloud account
Worth knowing
- Usage is billed separately from the plan: for example a default 2 vCPU sandbox costs $0.000028 per second and 4 GiB of memory $0.000018 per second.
- The free Hobby tier is a one-time $100 credit, not a renewing allowance, and caps sessions at 1 hour and 10 concurrent sandboxes.
- Going from 100 to 600 or 1,100 concurrent sandboxes adds $500 or $1,000 a month on top of Pro.
- It is infrastructure for developers: there is a web console but the product is used through the SDK and API.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
$150
A month to start
E2B is a paid product with a free trial, starting at $150 per month, plus per-second sandbox usage.
Hobby
$0
One-time $100 usage credit, sessions up to 1 hour, 10 concurrent sandboxes and the default sandbox CPU and RAM. Usage is charged against the credit.
Pro
$150
per month, plus usage billed by the second
Sessions up to 24 hours, 100 concurrent sandboxes (expandable to 1,100 with add-ons at +$500 and +$1,000 a month) and custom sandbox CPU and RAM.
Enterprise
Custom
Committed usage, custom billing, multi-day sessions, bring-your-own-cloud. The page says it starts at a $2,000 monthly commit.
Trying it first
Free Hobby tier with a one-time $100 usage credit, no credit card required. Credits do not renew.
Read from e2b.dev on Nov 12, 2026.
Ways to pay less
Startups
$20,000 in credits and Pro for early-stage startups
A one-time $20,000 in credits plus the Pro tier for startups under three years old that have raised less than $5M.
Stated on e2b.dev
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
1
Place it runs: Web
Cloud sandboxes where AI agents run code and tools. Here is what it does, as its own site describes it, and what it covers: open source, public API, AI features, AI agents.
Web only, with six integrations, Python and JavaScript SDKs and bring-your-own-cloud.
- Isolated sandbox per session
- Each agent session gets its own microVM with a shell, filesystem, network and an optional browser or desktop.
- Snapshots and pause
- Sandboxes start from a snapshot, and a sandbox can be paused and resumed from the same state.
- Python and JavaScript SDKs
- The sandbox is created and controlled from code with the e2b package for Python or npm.
- Bring your own cloud
- The same SDK works on E2B Cloud in the US, EU and APAC or inside your own AWS, GCP or Azure account.
- MCP tools inside the sandbox
- The site says more than 200 MCP servers can be called from inside a sandbox, and secrets are scoped per sandbox.
- Per-second usage billing
- Running sandboxes are charged by the second for vCPUs and memory, so cost follows run time and size.
Where it runs
- Web
What it works with
- OpenAI Agents SDK
- Claude Code
- Codex
- AWS
- Google Cloud
- Azure
E2B is made by FoundryLabs, inc. (E2B).
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
11/101
Other AI agents it is graded above
E2B's GPA of 1.8 is higher than 11 of the 101 other AI agents we grade, and level with 14.
It stands best on platforms and integrations (B, above 20 of 101) and worst on value for money (D, above 0).
Its paid plans start at $150 a month, against a middle price of $22.13 for the category: 62 of the 65 others that charge start lower.
On features, ease of use and platforms it scores 2.0 out of 4. 55 tools score higher and cost less.
Each grade against the category
Every bar is all 102 AI agents we grade, cut by the letter each got. E2B’s own letter is outlined.
- DValue for moneyAbove 0 of 101
- CFree plan and trialAbove 28 of 101
- CFeaturesAbove 1 of 101
- DEase of useAbove 0 of 101
- BPlatforms and integrationsAbove 20 of 101
Price against what you get
Each dot is one of 70 AI agents. Further left costs less; higher up scores better on features, ease of use and platforms. E2B is the marked dot.
What paid plans start at, a month (each step along is roughly double) →
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Keep it
To replace E2B you would be making an AI agent, with the models and the safeguards behind it. That is not a weekend's work, with an AI app builder or without one.
That makes this kind of software worth paying for, not this one in particular: 76 of the 101 other AI agents grade higher. It costs $1,800 a year. E2B is open source, so there is a third way: take its code and run it yourself.
What you could not
- An AI agent, with the models and the safeguards behind it.
- It plugs into other products, OpenAI Agents SDK, Claude Code and Codex among them, and has an API.
What this rests on. E2B’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
Browserbase, Browser Use, Composio, Letta and CrewAI
The 5 tools E2B is most often weighed against, with where each one differs from it.
- 2.2GPA
Browserbase
Free plan · from $20/mo
Cloud browsers and APIs for agents that use the web.
- Browserbase has a free plan. E2B does not, though it has a free trial.
- E2B is open source, according to its own site.
- Browserbase also covers workflow automation.
- 2.6GPA
Browser Use
Free plan · from $5
Browser agents and cloud browsers for AI apps.
- Browser Use has a free plan. E2B does not, though it has a free trial.
- 2.8GPA
Composio
Free plan · from $18/mo
Tool and app connections with managed auth for AI agents.
- Composio has a free plan. E2B does not, though it has a free trial.
- E2B is open source, according to its own site.
- Composio also covers workflow automation.
- 2.0GPA
Letta
Free plan · from $20/mo
Stateful agents with long-term memory, from the MemGPT team.
- Letta has a free plan. E2B does not, though it has a free trial.
- Letta also covers workflow automation.
- 2.2GPA
CrewAI
Free plan
Multi-agent platform to build, run and govern AI agents.
- CrewAI has a free plan. E2B does not, though it has a free trial.
- CrewAI also covers workflow automation and no-code.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
14
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is E2B free?
No, E2B is a paid product, but you can try it first. Free Hobby tier with a one-time $100 usage credit, no credit card required.
How much does E2B cost?
E2B lists 3 plans. Hobby: $0.
What platforms does E2B work on?
E2B is available on Web.
Does E2B offer any discounts?
E2B publicly lists the following: $20,000 in credits and Pro for early-stage startups.
Does E2B have an Android app?
No Android app was listed when its pages were read on Nov 12, 2026. E2B is listed for Web.
Does E2B have an iPhone app?
No iPhone app was listed when its pages were read on Nov 12, 2026. E2B is listed for Web.
Is E2B open source?
Yes. E2B is open source, according to its own site.
Does E2B have an API?
Yes. E2B offers a public API, according to its own site.
What does E2B integrate with?
E2B's listing names OpenAI Agents SDK, Claude Code, Codex, AWS, Google Cloud and Azure.
Who makes E2B?
E2B is made by FoundryLabs, inc. (E2B).
What are the alternatives to E2B?
The closest alternatives to E2B in our directory are Browserbase, Browser Use, Composio, Letta and CrewAI.
How does E2B compare with other AI agents?
E2B's GPA of 1.8 is higher than 11 of the 101 other AI agents we grade, and level with 14.
Is E2B good value for money?
ToolGPA grades E2B D for value for money. Its paid plans start at $150 a month, against a middle price of $22.13 for the category: 62 of the 65 others that charge start lower.
Could I make my own version of E2B?
To replace E2B you would be making an AI agent, with the models and the safeguards behind it.
Where this guide comes from
The prices, plans, platforms and features were read from E2B’s own pages on Nov 12, 2026, and the grades were given on Nov 12, 2026. Graded from this listing, whose facts were read from E2B's own pages on 12 November 2026. Not based on using the product, and shorter than our full reviews.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by FoundryLabs, inc. (E2B). Prices change, so check e2b.dev before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
5,038
Tools graded, in 95 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
5,038
tools graded
95
categories
739
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- E2B, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/e2b
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "E2B: The Insider's Guide", checked Nov 12, 2026. https://toolgpa.com/tools/e2b
Know someone choosing between AI agents?
Send them this guide: toolgpa.com/tools/e2b/guide
ToolGPA elsewhere: youtube.com/@toolgpa
See our other guides
The best-graded AI agents after E2B, each with an Insider's Guide of its own.
- AI Agents Insider's GuideEvery one of the 102 AI agents we grade, compared
- Genspark Insider's GuideAI workspace with an agent for research, slides, sheets and docs3.2 GPA
- Manus Insider's GuideGeneral AI agent for research, slides, websites and browser tasks3.2 GPA
- OpenClaw Insider's GuideOpen-source personal AI agent you run yourself and message in chat3.2 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what E2B’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. E2B is a trademark of its owner, and this guide is not made, paid for or approved by FoundryLabs, inc. (E2B). Prices and plans change: check e2b.dev before you buy.