Modal vs E2B

Modal's Sandboxes API runs untrusted code in gVisor-isolated containers on Modal's serverless cloud, with GPU access. For Python-first teams that already use Modal or need GPUs next to agent code. A 2 vCPU / 4 GiB sandbox lists at $0.238 an hour on Modal against $0.166 on E2B, 44% more.

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Modal against E2B, line by line

E2B baseline sources

Prices 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 Modal instead of E2B when

  • you need GPUs: Modal documents GPU sandboxes, and E2B lists CPU-only sandboxes.
  • you are prototyping: Starter: $0 plan with $30/month free compute credits.

Stay on E2B when

  • you run model-written code you do not control and want a dedicated kernel per sandbox: E2B uses Firecracker microVMs, Modal uses gVisor.
  • pause has to keep running memory as well as files: E2B's pause saves both, and Modal does not state memory state in our data.
  • price decides it: Modal lists $0.238 an hour for the 2 vCPU / 4 GiB box against $0.166 on E2B.
  • 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 Modal facts

Source per value
Isolation Isolation technology the vendor states for each sandbox.
gVisor 2
Other isolation options Alternative runtimes the vendor offers besides the default (e.g. VM runtime, gVisor for GPU).
VM runtime with its own Linux kernel (no GPU) 2
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.
wall clock 1
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.
$0.071 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.
$0.024 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).
$250.00 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.
Starter: $0 plan with $30/month free compute credits. 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.
Not published
Max session length Longest single sandbox session by plan, as published.
5 min default, up to 24 h 2
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.
Not published
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.
Yes 2
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).
Python, JavaScript, Go 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 3
HIPAA Vendor offers HIPAA-compliant usage/BAA (on any plan).
Yes 1
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.
$0.238 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.
1.44 1
Status Preview, experimental, beta, sunset or self-hosting caveats the vendor documents.
Not published
Pricing model
usage
From
$0.071 vCPU-hour
Pricing note
Sandboxes billed at non-preemptible rates (3x list): $0.00003942 per physical core-second (1 core = 2 vCPU) and $0.00000667/GiB-s; normalised to $0.071/vCPU-h and $0.024/GiB-h. HIPAA on Enterprise only. Pricing checked 2026-11-09.

Sources

  1. Modal Pricing accessed 2026-11-09
  2. Modal Sandboxes guide accessed 2026-11-09
  3. Modal security and privacy accessed 2026-11-09

Modal in the E2B comparisons

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