Pydantic Logfire
OpenTelemetry-based observability service from the Pydantic team with first-class PydanticAI and Python ecosystem integration.
| Category | Observability & Tracing |
| Open source | Yes |
| Self-hostable | Yes |
| Pricing model | freemium |
| Pricing notes | Free monthly span allowance, then usage-based per-span pricing; SDK is OSS |
| Framework integrations | pydantic-ai, openai-sdk, anthropic, opentelemetry, fastapi |
| Funding / ownership | Pydantic raised $12.5M Series A (Sequoia, 2023) |
Pricing/feature source: https://pydantic.dev/pricing