OpenLLMetry
Apache-2.0 OpenTelemetry instrumentation for LLM apps
Observability / Observability · Apache-2.0 · 7.5k
Reviewed 2026-10-18 · last push 2026-10-13 · repo checked 2026-10-19
What's Good
Apache-2.0 (traceloop/openllmetry), release 0.62.4 (2026-09-29). Because the output is plain OpenTelemetry, it works with Datadog, Honeycomb, Grafana and others, and its semantic conventions became part of OpenTelemetry. Add one instrumentation if you already run OTel, or use the Traceloop SDK to start quickly. A JS/TS version exists as OpenLLMetry-JS. ★~7.5k.
The Catch
Traces can include prompts and completions, which may hold personal data, so configure content capture deliberately. The Traceloop SDK defaults point toward Traceloop's hosted platform; set your own exporter. It is instrumentation, not a UI, so you still need a backend.
Verdict
The vendor-neutral way to get LLM calls into your existing tracing.
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