
E2B
situationalIsolated cloud sandboxes for agents — firecracker VMs billed per second of CPU/RAM.
Visit e2b.dev →> **E2B** — situational > Verified 2026-08-19 > Limitation: Seat fee and usage are separate; idle sandboxes still tick CPU/RAM. > > https://noemium.com/tools/e2b/Add to kitOpen in NoemiumFact-check this catalog entry for E2B (agents). Verdict: situational Verdict text: The sandbox other agent products quietly run on. Hobby is usage plus a one-time $100 credit pile; Pro is $150 plus the same per-second meters. You still write the agent. Not Browser Use (that's a browser); this is a VM. No production agent parked here. Limitations: - Seat fee and usage are separate; idle sandboxes still tick CPU/RAM. - Hobby session cap is 1 hour; long jobs need Pro. - Self-host of the commercial control plane is not the public SKU. - Concurrency above 100 is a Pro extra purchase, not included. Receipts: https://e2b.dev/pricing https://github.com/e2b-dev/E2B Last verified: 2026-08-19 Find outdated prices, wrong claims, or missing limitations. Cite primary sources (docs, pricing pages, benchmarks, model cards). Do not use marketing pages.[](https://noemium.com/tools/e2b/)
ledger entry · observed by @whysanesanders
The sandbox other agent products quietly run on. Hobby is usage plus a one-time $100 credit pile; Pro is $150 plus the same per-second meters. You still write the agent. Not Browser Use (that's a browser); this is a VM. No production agent parked here.
Strengths
- Isolated Firecracker VM sandboxes billed per second of CPU/RAM.
- Generous Hobby tier with $100 one-time credits and 20 concurrent sessions.
- The runtime several agent products quietly rely on.
Known limitations
- Seat fee and usage are separate; idle sandboxes still tick CPU/RAM.
- Hobby session cap is 1 hour; long jobs need Pro.
- Self-host of the commercial control plane is not the public SKU.
- Concurrency above 100 is a Pro extra purchase, not included.
Use it when
- Running untrusted agent code in isolated cloud VMs.
- Prototyping agents that need a real Linux environment, not a browser.
Skip it when
- You need sessions longer than the 1-hour Hobby cap without paying Pro.
- The budget cannot cover both seat fee and per-second usage.
- You want to self-host the commercial control plane.
Buy-check
- ·Price — freemium, Hobby $0 + usage (one-time $100 credits, 1h sessions, 20 concurrent); Pro $150/mo + usage (24h sessions, 100 concurrent); default 2 vCPU $0.000028/s as of 2026-08-19. Open the pricing page, not a screenshot.
- ·Free tier — Free tier exists — burn it first.
- ·Cancel fallout — What happens to your data/projects on cancel — check the ToS, not the FAQ.
- ·Seat math — Per-seat pricing multiplies quietly. Count seats before the annual plan.
- ·Who skips it — Also skipped when: You need sessions longer than the 1-hour Hobby cap without paying Pro.; The budget cannot cover both seat fee and per-second usage..
Price trailchangelog →
No price move in this repo yet.
Facts
- pricing
- freemium1
- price note
- Hobby $0 + usage (one-time $100 credits, 1h sessions, 20 concurrent); Pro $150/mo + usage (24h sessions, 100 concurrent); default 2 vCPU $0.000028/s
- free tier
- yes
- open source
- yes
- api
- yes
- self-host
- no
- category
- agents
- evidence
- source-verified
Sources
No source, no number.
Similar joball alternatives →
| tool | verdict | price | oss | self-host |
|---|---|---|---|---|
| E2B | situational | freemium | yes | no |
| Dify | ship | freemium | no | yes |
| CrewAI | ship | freemium | yes | yes |
| LangGraph | ship | freemium | yes | yes |
Facts from the catalog files — not scores you can buy. Quality and speed stay in the briefing, not in a fake 1–5 grid.
Dify
Source-available LLM app platform with agent workflows and RAG.
APIFREE TIER
freemiumCloud Sandbox free; self-host Community free under restricted license; cloud Professional/Team paid yearly
CrewAI
Python framework for multi-agent crews — roles, tasks and processes.
OSSAPIFREE TIER
freemiumopen source (MIT); cloud Free Basic (50 exec/mo); Enterprise custom
LangGraph
Graph-based agent orchestration from LangChain — stateful and controllable.
OSSAPIFREE TIER
freemiumframework free open-source; LangSmith Plus $39/seat/mo