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StackBlitz WebContainers
stackblitz.com/pricingDev environmentcompute/webcontainersJSONcomparereport an errorprovider JSON
- Free allowance
- A free Personal plan with unlimited public projects and repositories; a GitHub account is needed to save work or collaborate
- Verdict
- caveatusable, with a named limit or an unprobed read path
- Cost
- free tier
- Identity
- emailno card, no phone
- Binding limit
- write-gateda GitHub account is required to save work or collaborate; anonymous use is view-and-edit only
- Evidence
- documented4 sources; a first-party page was read and the sentence quoted
- Freshness
- stale on 2026-12-05checked 2026-11-04 (live); stale on 2026-12-05
| Free tier | a free Personal plan with unlimited public projects and repositories; a GitHub account is needed to save work or collaborate unit unlimited; metered on identity-count |
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| Price | none stated |
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| Limits | - request-rate unlimited public projects on the free Personal plan source
- write-gated (binding) a GitHub account is required to save work or collaborate; anonymous use is view-and-edit only source
not stated |
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| Identity | email 'you do need a GitHub account to save your work or collaborate with others', quoted from stackblitz.com/pricing read 2026-10-22 |
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| Egress | not published: the pricing page and FAQ state no egress, bandwidth or data-transfer term |
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| Per-object cap | not stated |
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| Retention | not stated |
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| Interface | unknown a JavaScript API (@webcontainer/api, npm) that boots the runtime inside a browser page; no REST API, CLI or SSH is documented on the pages read |
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| Reliability | no reliability event recorded |
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| Evidence note | documented the pricing page was read on 2026-10-22 and states the free plan's terms and the GitHub gate. |
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| Parsed numbers | |
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Evidence 4
| date | source | what it proved |
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| 2026-10-02 | stackblitz.com/pricing | not published |
| 2026-10-22 | stackblitz.com/pricing | 'The free Personal plan includes unlimited public StackBlitz projects and Github repositories.' and 'you do need a GitHub account to save your work or collaborate with others', quoted |
| 2026-11-03 | stackblitz.com/pricing | the pricing page states the free plan contents and gives no egress or bandwidth term |
| 2026-11-03 | webcontainers.io/guides/quickstart | the runtime is driven through a JavaScript package that boots inside a browser page |
More fields 6
| keep rate basis | no field in the source |
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| billing model | unclassified |
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| session cap | {"wall_clock_min": null,"idle_reap_s": null,"restart_required": false,"note": "a WebContainer runs in the browser tab; closing it ends the session"} |
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| free tier kind | allowance |
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| ps | {"gib": null,"price": "the project is the storage","durability": "the project in a GitHub repository","on_stop": true,"on_destroy": false,"retention": "while the repository exists"} |
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| net | {"out": false,"in": false,"ports": "none: the container runs in the browser","static_ip": false,"ipv6": false,"allowance": "network access is limited inside the WebContainer"} |
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Unknown values 9
- chaining: a source was read and is silent on this field
- egress metered: egress metering was not published
- interface: the access interface was not established
- limits note: a source was read and is silent on this field
- per object cap stated: a source was read and is silent on this field
- reliability note: nothing of this kind was observed
- retention notes: the field may be stated in a source that was not read
- retention stated: a source was read and is silent on this field
- tooling: a source was read and is silent on this field