Traceloop (OpenLLMetry)
Partial infoOpenTelemetry-based LLM instrumentation and monitoring.
Traceloop maintains OpenLLMetry, an open-source set of OpenTelemetry instrumentations for LLM apps, plus a managed platform for monitoring and evals. Being OTel-native, it exports to many backends.
License
Open source (Apache-2.0 (OpenLLMetry SDK))
Deployment
Self-hosted, Managed
Pricing
SDK is open-source; managed platform has free and paid tiers.
SDKs / languages
Python, TypeScript, Go
Strengths
- OpenTelemetry-native, exports anywhere
- Open-source SDK
- Avoids vendor lock-in
Limitations
- Platform younger than incumbents
- Prompt management not a focus
Alternatives
Arize Phoenix
Open-source LLM tracing and evaluation, OpenTelemetry-native.
Braintrust
Eval-first platform for iterating on LLM quality.
Datadog LLM Observability
LLM tracing and monitoring inside the Datadog platform.
Helicone
Open-source LLM logging and monitoring via a proxy.
Langfuse
Open-source LLM observability, evals, and prompt management.
LangSmith
Tracing, evals, and prompt management from the LangChain team.
Facts verified 19 July 2026. Neutral summary, not an endorsement; verify current details with the vendor.