Fly.io Sprites vs E2B
Sprites are hardware-isolated Linux computers for AI agents on Fly.io, with a persistent 100 GB disk, fast checkpoints and no compute charge while asleep. For long-lived agent workspaces. A 2 vCPU / 4 GiB sandbox lists at $0.165 an hour on Fly.io Sprites against $0.166 on E2B, 1% less.
Fly.io Sprites against E2B, line by line
E2B baseline sourcesPrices are list prices for one hour of a 2 vCPU / 4 GiB sandbox: 2 × the vCPU rate + 4 × the memory rate. Each value links to the page it came from; not published means the vendor states no figure. How we compare.
Pick Fly.io Sprites instead of E2B when
- your bill is the problem: the same 2 vCPU / 4 GiB box lists at $0.165 an hour here against $0.166 on E2B, 1% less.
- you are prototyping: $30 trial credit for new orgs.
Stay on E2B when
- pause has to keep running memory as well as files: E2B's pause saves both, and Fly.io Sprites does not state memory state in our data.
- you want managed cloud, your own cloud account and self-hosting from one vendor: E2B offers all three, with BYOC on its Enterprise plan.
All Fly.io Sprites facts
Source per value- Isolation Isolation technology the vendor states for each sandbox.
- VM 1
- Other isolation options Alternative runtimes the vendor offers besides the default (e.g. VM runtime, gVisor for GPU).
- Not published
- Deployment Managed cloud service, self-hosted software, or both.
- managed 1
- Billing basis What the meter counts: wall-clock allocated resources, active CPU only, requests/plan quota, session-hours, or free software.
- Not published
- vCPU price $/vCPU-hr Published on-demand CPU rate normalised to USD per vCPU-hour (per-second rates multiplied by 3,600; per-core rates divided by vCPUs per core where the vendor defines it). Lowest public tier, default region. 0 means the vendor states no separate CPU charge.
- $0.0385 1
- Memory price $/GiB-hr Published memory rate normalised to USD per GiB-hour (GB treated as GiB where the vendor does not distinguish). 0 means the vendor states memory is free.
- $0.0219 1
- Sandbox from $/sandbox-hr Smallest published per-sandbox hourly price, where the vendor publishes one.
- Not published
- Paid plan from $/mo Cheapest paid platform plan fee (before usage).
- $100.00 1
- Free tier A free plan, free monthly allowance or sign-up credit exists.
- Yes 1
- Free tier detail What the free tier or credit includes, as published.
- $30 trial credit for new orgs. 1
- Cold start ms Vendor-published create/boot time in milliseconds (a vendor claim, not our benchmark). Only filled when the vendor publishes a number; see startup_claim for percentile and conditions.
- Not published
- Resume time ms Vendor-published resume-from-pause/standby/snapshot time in milliseconds.
- Not published
- Startup claim The vendor's startup/resume wording with conditions, quoted or closely paraphrased.
- Checkpoints take "about a second"; wake time not published 1
- Max session length Longest single sandbox session by plan, as published.
- Not published
- Persistence / snapshots Filesystem state can be kept between runs (snapshots, persistent disks, volumes).
- Yes 1
- Pause / resume A sandbox can be paused, suspended, hibernated or put in standby and resumed later.
- Yes 1
- Memory state kept Pause/hibernate preserves running memory state, not only the filesystem.
- Not published
- Fork / branch A running or snapshotted sandbox can be cloned into new sandboxes.
- Not published
- GPU GPU sandboxes are offered.
- Not published
- Self-host Can run on your own hardware or cluster (open source or licensed).
- Not published
- BYOC / VPC Vendor-managed deployment inside your own cloud account.
- Not published
- Open source Core sandbox runtime is published under an open-source licence.
- Not published
- Licence Open-source licence of the runtime, if any.
- Not published
- SDKs / languages Official SDK languages (or supported execution languages where noted).
- JavaScript, Go, Python, Elixir 1
- Regions Published regions or region count.
- Not published
- Max vCPU per sandbox vCPU Largest published vCPU count per sandbox on any self-serve or enterprise plan.
- Not published
- Max memory per sandbox GiB Largest published memory per sandbox.
- Not published
- Concurrency Published concurrent sandbox limits by plan.
- Not published
- SOC 2 SOC 2 status as stated by the vendor.
- Type II 2
- HIPAA Vendor offers HIPAA-compliant usage/BAA (on any plan).
- Yes 2
- 2 vCPU + 4 GiB per hour $/hr Hourly list price of one 2 vCPU / 4 GiB sandbox: 2 x the vCPU rate + 4 x the memory rate, from the two published rates. Left empty for self-hosted software and for vendors without both rates. Vendors that bill CPU only while busy (Vercel, Cloudflare, Upstash, Tensorlake, AWS AgentCore) cost less for idle agents than this shows.
- $0.1645 1
- Price vs E2B x E2B The 2 vCPU + 4 GiB hourly price divided by E2B's own ($0.1656 at $0.000014/vCPU-s and $0.0000045/GiB-s). Under 1 is cheaper than E2B.
- 0.99 1
- Status Preview, experimental, beta, sunset or self-hosting caveats the vendor documents.
- Not published
- Pricing model
- usage
- From
- $0.0385 CPU-hour
- Pricing note
- $0.0385/CPU-h, $0.021875/GB-h while running; warm/cold Sprites not billed for compute; hot storage ~$0.50/GB-month. Hero plan $100/mo bundles 1,200 CPU-h. Pricing checked 2026-11-09.
Sources
- Fly.io Sprites accessed 2026-11-09
- Fly.io Security accessed 2026-11-09
Fly.io Sprites in the E2B comparisons
- E2B alternatives cheaper than E2BWhich sandboxes cost less than E2B for the same box? 10 listed.
- E2B alternatives with microVM or VM isolationWhich E2B alternatives give each sandbox its own kernel? 26 listed.
Compare with other E2B alternatives
All 41- Hyperbrowser vs E2B $0.150/hr, 0.91x E2B, VM
- Together Code vs E2B $0.149/hr, 0.9x E2B, microVM
- Freestyle vs E2B $0.132/hr, 0.8x E2B, VM
- Prime Intellect vs E2B $0.090/hr, 0.54x E2B, microVM
- Alibaba Cloud vs E2B $0.071/hr, 0.43x E2B, VM
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