What it does
Traceloop is a hosted observability and evaluation platform for LLM applications. Developers instrument their code with the OpenLLMetry SDK or use Traceloop Hub, then inspect traces and monitor prompt quality, latency, and related signals in the platform. It combines production monitoring with evaluations and CI integrations, helping teams notice a regression and trace it to a model call or application step. The product reports and scores behavior; it does not automatically repair the underlying application.
Traceloop's documented starting point is to choose an OpenLLMetry SDK or the Traceloop Hub, connect it to the LLM application, and send OpenTelemetry-based traces to the platform. The dashboard is then used to inspect prompts, responses, latency, and quality checks. For production use, teams can define monitors and alerts around output quality, while evaluation dashboards and CI integration help compare changes to prompts or models before or during a release.
This workflow is most useful when an engineer needs evidence about a model interaction rather than only a top-level error count. A trace can show where a call or tool step changed; a quality metric can reveal a pattern, but developers still need to decide whether the cause is a prompt, model, retrieval source, or application bug and make the corrective change.
The public pricing page lists a free tier capped by monthly spans and short data retention, plus an enterprise offering with custom retention and on-premises deployment. A seat allowance on that page conflicts with a separate FAQ statement, so it should be confirmed directly before planning a team rollout. The product page also announces that Traceloop is joining ServiceNow; the checked material does not establish the transaction's completion or future packaging.
Strengths
- OpenTelemetry-based SDKs and a proxy option offer different instrumentation paths for LLM applications.
- Production traces, quality monitors, alerts, and CI evaluations connect observation with regression checking.
- The pricing page describes both a limited free tier and an on-premises enterprise option.
Watch out for
- The free service has a monthly span cap and only 24 hours of data retention.
- The public page gives inconsistent free-tier seat information, and the announced ServiceNow move leaves future product packaging unclear.
Best for
- AI application engineers who need to trace model calls and monitor quality in production.
- Teams using OpenTelemetry conventions who want LLM-specific monitors alongside CI evaluations.
Sources
- Traceloop - LLM Reliability Platform (Oct 26, 2026)
- Introduction - traceloop (Oct 26, 2026)
- Pricing | Traceloop - LLM Application Observability (Oct 26, 2026)
- Traceloop is joining ServiceNow | Traceloop - LLM Application Observability (Oct 26, 2026)
- openllmetry/LICENSE at main · traceloop/openllmetry · GitHub (Oct 26, 2026)