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Lunary
Lightweight open-source LLM observability with tracing, analytics, prompt templates and PII masking, formerly known as LLMonitor.
| Category | Observability & Tracing |
| OpenTelemetry-native | Yes — no proprietary-SDK lock-in |
| Open source | Yes |
| Self-hostable | Yes |
| Pricing model | freemium |
| Pricing notes | Free tier; per-seat paid plans; Apache-2.0 self-hosting |
| Framework integrations | langchain, openai-sdk, anthropic, litellm |
| Funding / ownership | — |
Pricing/feature source: https://lunary.ai/pricing
Frequently asked questions
Is Lunary open source?
Yes.
Can I self-host Lunary?
Yes — Lunary can run in your own infrastructure.
Is Lunary OpenTelemetry-native?
Yes — Lunary speaks OpenTelemetry (OTLP) natively, so there is no proprietary-SDK lock-in.
How much does Lunary cost?
Freemium. Free tier; per-seat paid plans; Apache-2.0 self-hosting