Observed arrival · 2026-10-01
Firelet, E2B-compatible sandboxes on dedicated hardware
A beta service for running AI-agent code in Firecracker microVM sandboxes, with an E2B-compatible API and dedicated hardware in Montreal.
○Open
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$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Teams running AI agents that execute code
- Worth noticing
- The beta is limited to one host, eight concurrent sandboxes per key, and one-hour maximum lifetimes.
Field notes
Onboarding is manual: developers submit a form, then receive a key, usually within a day, and can point the existing E2B SDK at Firelet by changing two environment variables. The page describes its implementation as a pinned fork of E2B’s Apache 2.0 Embed stack, with a Python 3.12 template and preinstalled data stack. It reports 180ms p50 and 243ms p99 for create-to-exec over public HTTPS, but provides no further benchmark methodology.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
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