molab

marimo.io · Compute, Storage · 2 records · JSON

molab Compute★ qualifiesemailno cardDvolume-quota
molab (marimo cloud) Storagefails: quotaemail?card?R

molab Compute

★ qualifiesemailno cardDvolume-quota

docs.marimo.io/guides/molab/ · notebook runtime · compute/molab · JSON · compare

Free tier	free: 4 CPUs and 32 GB RAM per notebook, an NVIDIA RTX Pro 6000 Blackwell with 96 GB VRAM attachable to any notebook, sessions up to 12 hours, 90-minute idle shutdown unit hours; metered on wall-clock; No published monthly hour cap. The vendor says the service stays free while capacity is not oversubscribed.
Price	none stated
Per-object cap	not applicable: the unit is a session, not an object
Retention	a limited amount of persistent storage per notebook; files uploaded through the sidebar or cached with mo.persistent_cache are persisted, subject to limits on file size and duration that may change at molab's discretion
Egress	no published egress allowance or price
Identity	email a browser session at molab.new; the documentation describes no card and no phone step. Not stated explicitly as 'no card', so read as the absence of a stated gate rather than a documented one.
Limits	volume-quota 12 hours maximum session, 90 minutes idle shutdown, no published monthly cap source There is no published GPU-hours figure at all, and the vendor reserves both the price and the resource parameters, so the card can be withdrawn or resized with no notice period and no number a plan can be built on.
Binding	volume-quota nothing is metered, so nothing runs out on a schedule; the 12-hour session is the wall, and the vendor reserves the right to change the resources
Interface	rest inferred from the tooling the provider documents; not probed
Tooling	not stated
Composes with	A 96 GB VRAM card in a browser tab for 12 hours at a time is the largest single free GPU in the wave that needs only an email, and it composes with molab's GitHub mirroring to hold the notebook source outside the session.
Reliability	the vendor states the free service continues only while resources are not oversubscribed, so capacity is the risk rather than a counter
Notes	No monthly GPU-hour quota is published, which is the one number a planner needs. The idle rule (90 minutes) is far more generous than Colab's or Kaggle's, and 12 hours matches Colab's cap with much better hardware.
Evidence rung	documented compute, GPU, session length and idle timeout are quoted from the vendor's docs page today. The absence of a card gate is inferred from the docs describing none; one signup would settle it.
Checked	2026-10-25 (live); stale on 2026-11-24
Parsed numbers	`$.extras.m10h_usd` price USD0.0 / month `$.extras.m24h_usd` price USD0.0 / month `$.limits[0].value` limit:volume-quota 12.0 hours

Evidence (12)

date	source	what it proved
2026-10-22	docs.marimo.io/guides/molab/	quoted: 'Notebooks can run for as long as 12 hours before molab shuts them down. Notebooks that are idle for more than 90 minutes are automatically shut down.'
2026-10-22	docs.marimo.io/guides/molab/	quoted: an NVIDIA RTX Pro 6000 Blackwell GPU with 96 GB of VRAM and 125 TFLOPS can be attached to any notebook; default 4 CPUs and 32 GB RAM; notebooks run as long as 12 hours; idle over 90 minutes shuts down
2026-06-01	marimo.io/blog/reintroducing-molab	quoted: the public preview of molab runs natively on CoreWeave Cloud with opt-in GPUs and 12 hour sessions
2026-09-01	linux.do/t/topic/2696589	forum report, translated: molab has an NVIDIA RTX Pro 6000 Blackwell in public beta limited to 12 hour sessions, and has no public IP interface, with tunnelling generally blocked, so it is training only rather than serving
2026-10-22	marimo.io/blog/newsletter-25	quoted: 'It will remain free as long as our resources are not oversubscribed, though we may tweak resource parameters in the public preview as we adapt to load' [date precision: year precision] [re-read 2026-10-22]
2026-10-22	marimo.io/blog/reintroducing-molab	quoted: 'We are providing molab - GPUs and all - for free, as long as usage is reasonable' [date precision: year precision] [re-read 2026-10-22]
2026-10-24	docs.marimo.io/guides/molab/	quoted: 'By default, each notebook runs with 4 CPUs and 32 GB of RAM.'
2026-10-24	docs.marimo.io/guides/molab/	quoted: 'You can attach an NVIDIA RTX Pro 6000 Blackwell GPU — with 96 GB of VRAM and 125 TFLOPS — to any notebook.'
2026-10-24	docs.marimo.io/guides/molab/	quoted: 'Notebooks can run for as long as 12 hours before molab shuts them down. Notebooks that are idle for more than 90 minutes are automatically shut down.'
2026-10-24	docs.marimo.io/guides/molab/	quoted, bold markers in the original: 'Is molab free? Yes.'
2026-10-24	docs.marimo.io/guides/molab/	quoted: 'Notebooks get a limited amount of persistent storage' — persisted only through the sidebar upload or mo.persistent_cache
2026-10-24	docs.marimo.io/guides/molab/	quoted: 'notebooks are public but undiscoverable by default'

More fields (13)

{
 "wave2": {
  "class": "enforcement",
  "free_tier_kind": "public-preview",
  "shape": {
   "vcpu": 4,
   "ram_gib": 32,
   "gpu_class": "RTX Pro 6000 Blackwell",
   "gpu_count": 1
  }
 },
 "shape": {
  "vcpu": 4,
  "ram_gib": 32,
  "disk_gib": null,
  "gpu_class": "NVIDIA RTX Pro 6000 Blackwell",
  "gpu_count": 1,
  "note": "the GPU is opt-in per notebook and comes with 96 GB VRAM"
 },
 "billing_model": "free",
 "term": "none",
 "m10h_usd": 0.0,
 "m24h_usd": 0.0,
 "price_arithmetic": "USD 0.00: public preview, no card",
 "free_tier_kind": "free-preview",
 "unattended": false,
 "unattended_mechanism": "unverified: the docs describe no scheduler and no headless submit; a 90-minute idle shutdown implies the browser session must stay active",
 "network_out": {
  "allow_outbound": true,
  "allow_inbound_listen": false,
  "ports": "unstated",
  "static_ip": false,
  "ipv6": false,
  "per_session_bytes": null
 },
 "session_cap": {
  "wall_clock_min": 720,
  "idle_reap_s": 5400,
  "restart_required": false,
  "note": "12 h maximum; 90 min idle shutdown"
 },
 "units": "RAM and disk are quoted in the vendor's own decimal GB, not GiB. The ram_gib and disk_gib keys carry the vendor's number unconverted, so where a vendor writes 30 GB the key holds 30 and the true value is about 27.9 GiB. No conversion was performed."
}

Unknown or withheld values (1)

$.tooling not-stated

molab (marimo cloud) Storage

fails: quotaemail?card?R

molab.marimo.io · paas · storage/molab · JSON · compare

Free tier	'Notebooks get a limited amount of persistent storage' — size deliberately undisclosed; 'Cached files are subject to limitations on file size and persistence duration, which may change at molab's discretion.' unit mixed; metered on stored-bytes
Price	none stated
Per-object cap	not stated
Retention	not stated
Egress	No published meter; notebooks are public and embeddable, so serving is expected behaviour.
Identity	email (placeholder) not published
Binding	none no constraint of a named kind was recorded; the verdict rests on the quota sentence rather than on a named limit
Interface	s3-compatible, rest rest
Tooling	marimo notebooks as Python files; server-backed preview; remote storage integrations (GDrive, HF, S3-compatible) rather than a real disk API.
Composes with	Per-notebook storage only, and only for files uploaded via the sidebar or written through `mo.persistent_cache`. No bulk upload path, so no chaining.
Reliability	Persistence exists but is explicitly discretionary and undocumented in size — unusable as a storage substrate, fine as a free 32 GB-RAM compute box that can fetch and re-upload.
Notes	'Notebooks get a limited amount of persistent storage' — size deliberately undisclosed; 'Cached files are subject to limitations on file size and persistence duration, which may change at molab's discretion.'
Evidence rung	reported One page read moves it to documented.
Checked	2026-10-21 (inherited); stale on 2026-11-04

Evidence (2)

date	source	what it proved
2026-10-21	docs.marimo.io/guides/molab/	'Notebooks get a limited amount of persistent storage'; 'subject to limitations on file size and persistence duration'
2026-10-21	docs.marimo.io/guides/molab/	'4 CPUs and 32 GB of RAM' default; 12 h sessions

More fields (1)

{
 "dead_end": {
  "failure_class": "quota",
  "why": "'Notebooks get a limited amount of persistent storage' — size deliberately undisclosed; 'Cached files are subject to limitations on file size and persistence duration, which may change at molab's discretion.'",
  "retry_when": null,
  "first_recorded": "2026-10-21"
 }
}

Unknown or withheld values (8)

$.extras.dead_end.retry_when process
$.free_tier.notes process
$.identity_cost.detail defaulted
$.identity_cost.kind identity-defaulted
$.per_object_cap.notes not-extracted
$.per_object_cap.stated not-extracted
$.retention.notes not-extracted
$.retention.stated not-extracted