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How Arena (LMArena) uses E2B

600,000 sandboxes

“Approximately 600,000 sandboxes per day.”

As published on e2b.dev, October 2026. Checked by usedby on Oct 10, 2026.

What happened

Arena runs its AI model and agent evaluation platform on E2B, provisioning an isolated Linux sandbox for each evaluation session where agents write and execute code, build apps, and do knowledge work. Sandboxes are launched from templates and can be paused and resumed so users can continue work across sessions.

Summary written by usedby from the source page, in English. The figures are those of E2B and Arena (LMArena), not ours.

  • Under two hours“Under two hours to the initial implementation.”

Today, Arena has tens of millions of monthly visitors and runs up to 600,000 E2B sandboxes each day (up from 300,000-400,000 at the time of interview).

From the page. e2b.dev

What we do best is creating evaluations. The underlying infrastructure would have taken us many, many months and many, many senior engineers to actually build out. E2B was basically that team from day one.

Aryan Vichare, Founding Engineer, Arena (LMArena). Source

What the story claims, and what we checked

What we compared with the page.

  • The figure: 600,000 sandboxesCheckedPrinted word for word on the page, near the name of Arena (LMArena).
  • The passage quoted aboveCheckedCopied word for word from the page, near the name of Arena (LMArena).
  • The publication dateCheckedRead from the page’s own metadata, never guessed.
  • Arena (LMArena) uses E2BCheckedConfirmed line.
  • The result itselfNot checkedWe quote it; we did not measure it.

Same company, same tool or same industry.

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