SigNoz
Open-source OpenTelemetry APM that handles LLM observability via standard OTel instrumentation rather than an LLM-specific SDK.
| Category | Observability & Tracing |
| Open source | Yes |
| Self-hostable | Yes |
| Pricing model | freemium |
| Pricing notes | OSS self-host free; cloud from $49/mo usage-based |
| Framework integrations | opentelemetry, openai-sdk, langchain |
| Funding / ownership | YC W21; $6.5M seed |
Pricing/feature source: https://signoz.io/pricing/