Blaxel

Blaxel — Agent-first cloud claiming ~25 ms microVM boots from snapshots. Blaxel, formerly Beamlit, builds an agent-native cloud where sandboxes are one primitive alongside agent hosting and a model gateway. Its pitch is boot time: roughly 25 ms to restore a microVM from snapshot, the most aggressive claim in the category. It is young, venture-funded, and the surrounding platform is broader than most teams need if all they want is a place to run code. Founded 2024. Seed.

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 — 500 ms, 6th 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.

• Egress control — open, 13th of 16. Daytona records allowlist.
• 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. 23 of 26 tracked fields carry a value for Blaxel, and 3 of those cite a document you can open. Last verified 2026-01-15. 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. Blaxel is ahead on Meter (per-second against subscription) and Snapshot & fork (Yes against Partial). That pattern repeats across the rest of the roster — see Blaxel alternatives for the other rivals, each compared the same way.

Founded

2024

Funding

Seed

Fields we track

23 of 26

Last verified

2026-01-15

The 25 ms claim is the purest example of why the measured column exists — a real number for a real operation that is not the one you care about. The wider platform is the actual pitch, and that is a lot of surface area to buy from a seed-stage company.

Cold start

500 ms6th of 16

Inferred

Snapshot & fork

●Yes1st of 18

Vendor-claimedverified 2026-01-15source

Egress control

open13th of 16

Inferred

MCP server

●Yes1st of 16

Inferred

Isolation

microvm1st of 16

Vendor-claimedverified 2026-01-15source

Custom images

●Yes1st of 20

Inferred

Streaming output

●Yes1st of 16

Inferred

Max runtime

1440 min1st of 16

Inferred

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

• You want sandboxes, agent hosting and MCP from one vendor.
• Latency-sensitive workloads where you can keep a pool warm.
• You are comfortable betting on an early-stage platform.
• Cold start is your binding constraint. Blaxel records 500 ms, 6th 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. Blaxel 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. Blaxel 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:

• Egress control. Blaxel records open, 13th of 16 in the Sandbox providers roster. Daytona records allowlist on the same field. If that is a hard requirement rather than a preference, start elsewhere.
• Funding. Blaxel 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. 3 of the 26 fields we track for Blaxel are still blank: GPU, Price / hour 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.