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Butter
butter.devContainer and VM sandboxcompute/butterJSONcomparereport an errorprovider JSON
- Free allowance
- Not stated
- Verdict
- self-hosted, last resortverdict paid-only: no free allowance; listed for its price. Self-hosted options are listed last, because this site is for users who have no hardware.
- Cost
- no price stated
- Identity
- email?placeholder, not evidence; card unknown, phone unknown
- Binding limit
- write-gatedno hosted service is offered: the runtime embeds in a user's own process, so there is no capacity to rent
- Evidence
- documented3 sources; a first-party page was read and the sentence quoted
- Freshness
- stale on 2026-11-30checked 2026-10-30 (live); stale on 2026-11-30
| Free tier | not stated unit none; metered on wall-clock |
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| Price | none stated |
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| Limits | - write-gated (binding) no hosted service is offered: the runtime embeds in a user's own process, so there is no capacity to rent source
|
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| Identity | email (placeholder) not published |
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| Egress | not stated |
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| Per-object cap | not stated |
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| Retention | not stated |
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| Interface | unknown |
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| Reliability | no reliability event recorded |
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| Notes | Paid-only rather than dead: the product is sold and reachable. Self-hosted: the bVisor runtime embeds in the user's own local process, with no VM or remote infrastructure. |
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| Evidence note | documented the site was read on 2026-10-22 and offers a local runtime rather than hosted compute. There is no plan and no price, which is the record's claim, and the reason is that the product is not a host |
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| Parsed numbers | |
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Evidence 3
| date | source | what it proved |
|---|
| 2026-10-02 | butter.dev | not published |
| 2026-10-22 | butter.dev | 'Butter is building bVisor, an incredibly lightweight sandbox runtime for AI agents. It embeds directly into your local process, providing a safe bash environment without the overhead of VMs or remote infra.' quoted; no hosted service or price is offered |
| 2026-10-29 | butter.dev | the bVisor sandbox runtime embeds in the client's local process, with no remote infrastructure |
More fields 6
| keep rate basis | no field in the source |
|---|
| billing model | unclassified |
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| session cap | {"wall_clock_min": null,"idle_reap_s": null,"restart_required": false,"note": "the sandbox's lifetime is the client process's lifetime"} |
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| network out | {"out": null,"in": false,"ports": "none","static_ip": false,"ipv6": false,"allowance": null} |
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| free tier kind | none |
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| reclassified from | dead |
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Unknown values 11
- chaining: a source was read and is silent on this field
- egress metered: egress metering was not published
- egress terms: a source was read and is silent on this field
- free tier stated: a source was read and is silent on this field
- 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