Daytona

Daytona — Sub-second container sandboxes for agent workloads, from a team that built a dev-env manager. Daytona started as an open-source development environment manager and repositioned in 2025 as a sandbox runtime for AI agents. It markets the most aggressive boot numbers in the category and backs them with snapshot-based image handling and declarative image builds — but the sandboxes are Docker/OCI containers sharing the host kernel, not the microVMs the category's other speed leaders run, and stronger runtimes such as Kata or Sysbox are a configuration choice rather than the default. In June 2026 the company closed its source; the old AGPL repository stays public but is no longer maintained. Founded 2023. Seed. Licensed Proprietary.

We track it in 1 comparison — Sandbox providers — so every claim below is a cell in a table you can open and check rather than an impression. Across those rosters it sits against 19 other tools, and what follows is where it visibly separates from them.

Where it wins.

• Cold start — 350 ms, 4th of 16.
• Snapshot & fork — Yes, which only 5 of 18 tools here manage.
• MCP server — Yes, which only 4 of 16 tools here manage.

Each of those is ranked against the whole roster on its category page, not against a hand-picked subset, so a first place here means first of everything we list.

Where it gives ground.

• Isolation — container, 14th of 16. E2B records microvm.
• Funding — seed, 9th of 15. Fly.io Machines records series-c-plus.

None of these disqualify it on their own. They are the fields to check against your own requirements before you commit, because they are the ones where a competitor genuinely does better.

Provenance. 24 of 26 tracked fields carry a value for Daytona, and 13 of those cite a document you can open. Last verified 2026-07-23. Every figure keeps its own provenance — measured by us, claimed by the vendor, inferred, or community-reported — and we would rather print a dash than a guess.

Its nearest neighbour in our data is ascii. Daytona is ahead on Meter (per-second against subscription) and Snapshot & fork (Yes against Partial). That pattern repeats across the rest of the roster — see Daytona alternatives for the other rivals, each compared the same way.

Founded

2023

Funding

Seed

Licence

Proprietary

Fields we track

24 of 26

Last verified

2026-07-23

The most credible challenger to E2B on ergonomics — faster in the common case, and the best first-party MCP story in the roster — with one caveat large enough to change the shortlist. Daytona runs containers on a shared host kernel, not the microVMs its speed peers run, and its own documentation talks about a "dedicated kernel" without ever naming a hypervisor. For your own agent's code that is a non-issue and the boot time is a real advantage. For genuinely untrusted third-party code it is the wrong end of the isolation axis, and the sub-90 ms number everyone quotes is a consequence of that choice rather than an achievement independent of it. The second caveat is churn, now compounded: product, docs and pricing have all moved substantially inside eighteen months, and the source closed in June 2026, so the self-host escape hatch that used to backstop those changes is gone.

Cold start

350 ms4th of 16

Inferred

Snapshot & fork

●Yes1st of 18

Vendor-claimedverified 2026-01-15source

Isolation

container14th of 16

Inferredverified 2026-07-23source

MCP server

●Yes1st of 16

Vendor-claimedverified 2026-01-15source

Price / hour

$0.17 /hr4th of 9

Inferredverified 2026-07-23source

Egress control

allowlist1st of 16

Vendor-claimedverified 2026-07-23source

Custom images

●Yes1st of 20

Vendor-claimedverified 2026-01-15source

Streaming output

●Yes1st of 16

Vendor-claimedverified 2026-01-15source

Daytona is the right call in these situations, each one drawn from a field we actually record:

• Boot time is your headline metric and the code is your own.
• You want an MCP server maintained by the vendor.
• You can tolerate a fast-moving, now closed-source product surface.
• Cold start is your binding constraint. Daytona records 350 ms, 4th of 16 in the Sandbox providers roster. We define that field as p50 wall-clock from a single client in a fixed region calling create-sandbox on an account with nothing running, until a trivial command returns output.
• Snapshot & fork is your binding constraint. Daytona records Yes, which only 5 of the 18 tools in the Sandbox providers roster do. We define that field as whether you can freeze a running sandbox and restore or clone it.
• MCP server is your binding constraint. Daytona records Yes, which only 4 of the 16 tools in the Sandbox providers roster do.

Reach for something else when any of the following is a requirement rather than a nice-to-have:

• Isolation. Daytona records container, 14th of 16 in the Sandbox providers roster. E2B records microvm on the same field. If that is a hard requirement rather than a preference, start elsewhere.
• Funding. Daytona records seed, 9th of 15 in the Sandbox providers roster. Fly.io Machines records series-c-plus on the same field. If that is a hard requirement rather than a preference, start elsewhere.

We publish this block because a comparison that only lists what a tool is good at is marketing. Every figure above sits on the same page as its source, and the field definitions are on the category tables if you want to check how we measured them.

What we don't know. 2 of the 26 fields we track for Daytona are still blank: GPU and GitHub stars. Those render as dashes rather than as zeroes or assumptions, because an empty cell and a bad cell are not the same thing and only one of them is honest. If you know any of these figures and can point at a document, tell us.