Logfire

Verified 19 Aug 2026

Pydantic’s observability product, including LLM/agent traces.

Logfire is Pydantic’s hosted (and self-hostable, per current docs) observability product built on OpenTelemetry. It covers general app tracing and LLM/agent spans. Separate from Pydantic AI.

Observability

Model independence: Multi-model
Deployment: Cloud, Self-hosted
Open source: No
License: Proprietary product; OTEL-based
Pricing model: Mixed
Added / updated: 19 Aug 2026 / 19 Aug 2026

logfire.pydantic.dev · Docs

Editorial take

If you already instrument with Logfire, do not add a second LLM-only SaaS without a reason. Listed separately from Pydantic AI so the SDK and the dashboard are not one slug. Confirm self-host on the docs page you open today.

Strengths

OTEL-shaped tracing from the Pydantic team.
Works beyond LLM toys — whole app.
Natural pair with Pydantic AI.

Limitations

Commercial product.
Not an eval framework by itself.
Not a factory orchestrator.

Fields last checked against primary sources on 19 Aug 2026. Pricing and plan names rot; follow the vendor URL.