molab
marimo.io · 2 records in Compute, Storage · JSON
Records 2
- ★ qualifiesmolab
Computefree tieridentity emailno cardlimit volume-quotaevidence documentedstale on 2026-11-24
- fails: quotamolab (marimo cloud)
Storagefree tieridentity email?card?evidence reportedstale on 2026-11-05
molab
Compute- Free allowance
- 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
- Verdict
- ★ qualifiesusable as stated; the read path was probed
- Cost
- free tier
- Identity
- emailno card, no phone
- Binding limit
- volume-quota12 hours maximum session, 90 minutes idle shutdown, no published monthly cap
- Evidence
- documented12 sources; a first-party page was read and the sentence quoted
- Freshness
- stale on 2026-11-24checked 2026-10-24 (live); stale on 2026-11-24
| 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 |
| Limits |
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GPU-hours figure at all, and the vendor reserves both the price and the resource parameters, so the card can be withdrawn or resized with no notice period and no number a plan can be built on.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 |
| 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. |
| Egress | no published egress allowance or price |
| 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 |
| Interface | rest inferred from the tooling the provider documents; not probed |
| Tooling | not stated |
| 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 note | 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. |
| Parsed numbers |
|
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 | not published |
| 2026-10-22 | marimo.io/blog/reintroducing-molab | not published |
| 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
| facets | {"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 | no |
| 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 values 1
- tooling: a source was read and is silent on this field
molab (marimo cloud)
Storage- Free allowance
- '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.'
- Verdict
- fails: quotathe free allowance is too small to matter
- Cost
- free tier
- Identity
- email?placeholder, not evidence; card unknown, phone unknown
- Binding limit
- noneno named constraint binds
- Evidence
- reported2 sources; a third party said so
- Freshness
- stale on 2026-11-05checked 2026-10-21 (inherited); stale on 2026-11-05
| 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 |
| Identity | email (placeholder) not published |
| Egress | No published meter; notebooks are public and embeddable, so serving is expected behaviour. |
| Per-object cap | not stated |
| Retention | not stated |
| 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. |
| Parsed numbers |
|
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 values 4
- per object cap notes: the field may be stated in a source that was not read
- per object cap stated: the field may be stated in a source that was not read
- retention notes: the field may be stated in a source that was not read
- retention stated: the field may be stated in a source that was not read