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How LMArena uses E2B

230,000

“we had over 50,000 users who started over 230,000 E2B sandboxes”

As published on e2b.dev, February 2025. Captured by usedby on Oct 6, 2026.

What happened

LMArena runs the code generated by competing LLMs inside isolated E2B sandboxes for WebDev Arena, an open-source arena where two models each build a web app and users vote on the better one. The sandboxes let it execute code from multiple models side by side with isolation.

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

  • 2 hours“It took 2 hours to get E2B up and running.”
  • 50,000“the platform has run over 50,000 model comparisons”
  • ~150ms“E2B sandboxes start in ~150ms”

Very quickly, we had over 50,000 users who started over 230,000 E2B sandboxes.

From the page. e2b.dev, captured Oct 6, 2026

It took 2 hours to get E2B up and running.

Aryan Vichare, Member of Technical Staff at LMArena, LMArena. Source, captured Oct 6, 2026

What the story claims, and what we checked

We compared the story with its live page on Oct 6, 2026.

  • The figure: 230,000CheckedPrinted word for word on the page, near the name of LMArena.
  • The passage quoted aboveCheckedCopied word for word from the page, near the name of LMArena.
  • The numbers in our summaryCheckedEach one is printed on the page.
  • The publication dateCheckedRead from the page’s own metadata, never guessed.
  • LMArena uses E2BCheckedConfirmed line. Latest check across sources: Oct 6, 2026.
  • The result itselfNot checkedWe quote it; we did not measure it.

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