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Pydantic Logfire

Observability platform for AI apps covering model calls, agent steps, API requests and database queries in one trace

Observability tool by Pydantic

IndexedMIT★ 4,522
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Install

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pip install logfire

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About

Logfire records traces across an AI application stack, including model calls, agent steps, API requests and database queries, in one timeline. Data is queried with Postgres-flavored SQL, and evals run inside the trace. SDKs cover Python, JavaScript/TypeScript and Rust, and OpenTelemetry is offered for other languages.

Use cases: monitoring-observability, llm-evaluation

Reviews

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Fact sheet

Category
Tracing · opentelemetry
Self-host
Yespydantic.dev
Open source
Noraw.githubusercontent.com
Compliance (vendor says)
SOC 2, HIPAApydantic.dev
Regions
EUpydantic.dev
Works with
pydantic-ai, langchain, llamaindex, dspy, autogen, claude-agent-sdk, crewai, google-adk, agnopydantic.dev
Protocols
opentelemetry, mcppydantic.dev

Plans

Personal$010M telemetry records/month hard-capped at $0; 3 projects; 30-day retention; 1 seat plus 2 read-only guests
Team$49/month10M records included, $2 per additional million; 5 seats included, $25 per extra seat; 30-day query window
Growth$249/monthunlimited seats, guests and projects; up to 90-day retention; priority support and boilerplate BAA

From the vendor's pricing page, read Oct 24, 2026.

Facts read from the vendor's own pages by claude-haiku-5-5 on Oct 24, 2026; a fact is shown only with the page it came from.

Signals

Stars
4,522
Forks
336
Open issues
133
Last commit
Oct 23, 2026 (4 days ago)
Last release
Oct 23, 2026 (4 days ago)

From GitHub (fetched Oct 24, 2026).

Details

Packages
pypi logfire
License
MIT
Repository
github.com/pydantic/logfire
Website
pydantic.dev/logfire
Docs
pydantic.dev/docs/logfire/get-started/
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
WebsiteDocsPricing pageREADMEgithub-graphql

More from Pydantic

Cite this page

Pydantic Logfire. Agent Mart. https://agentmart.dev/observability/pydantic-logfire (last updated 2026-10-24)