Pydantic Logfire

No foundation model. Pydantic Logfire does not run one, so there is no model provenance to record. An OpenTelemetry-based observability platform that records traces, metrics and logs from applications - including instrumenting LLM and agent calls - but performs no inference and serves no model of its own. Established from the product’s own public documentation and what it does. If that is out of date, tell us at right of reply.

Not yet assessed. We publish a sovereignty position only where the vendor documents one — we do not infer it from a domain or a company name.

Pydantic Logfire publishes a list of the other companies it uses as sub-processors. It lists 15 entries. Each is shown below with the location the vendor lists it under, in the vendor’s own words.

Taken together those entries name at least European Union, United States. That is what our place list could match in the vendor’s own words above, so treat it as a floor rather than the whole of it — the entries themselves are the record.

These are other companies, not Pydantic Logfire. Where a sub-processor is listed as operating is a fact about that company. It is not a statement about where Pydantic Logfire keeps your data, which Vannus publishes separately and only from a document in which the vendor says so.

Read from pydantic.dev on 2026-09-16, from the page the vendor titles “Logfire Cloud Subprocessors | Pydantic”. Every entry above is a verbatim span of that page.

This is the vendor’s own disclosure, reproduced. Vannus has not audited what any of these companies do with your data, and a list can change without notice. Treat it as a starting point for your own review, not a legal determination, and take advice on anything that matters.

Vannus records, from the vendor's own published documents, the legal entity a customer contracts with, the country that entity sits in, and the governing law of its terms — and whether the vendor runs its own model or resells someone else's. Each finding is quoted to its source and dated, or marked not disclosed where the vendor publishes nothing. No paid placement on a record, in the catalog or in search — affiliate status is walled off from the record, enforced by a test in the build. See the methodology →