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Pydantic Logfire vs Laminar: catalog facts
Pydantic Logfire	Laminar
Freemium Free for 10 million spans, logs and metrics per month, no card required; paid plans above…	Free Free and open source under Apache 2.0; a managed platform is offered at laminar.sh.
Web	Web, Self-hosted
Traces LLM calls alongside API and database activity Built on OpenTelemetry with SQL querying	Automatic tracing for many agent frameworks and model APIs Evals that run locally or in CI with a comparison UI
Primarily a hosted service requiring an account Self-hosting is offered as an option rather than the default	Requires adding its SDK to your application Self-hosting involves running several services including ClickHouse
Web application, Hosted service	Self-hosted, Hosted service
Closed source	Open source
License not stated	License: Apache-2.0
Account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.