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OpenLIT vs Comet Opik
OpenLIT vs Comet Opik
Opik is an Apache-2.0 open-source project for LLM tracing and evaluation with Comet ecosystem ties. OpenLIT is also Apache 2.0 and self-hostable, with OpenTelemetry-native instrumentation, Prompt Hub, agent monitoring, Vault, and GPU collectors in one platform.
| Feature | OpenLIT | Comet Opik |
|---|---|---|
| Core Architecture | ||
| OpenTelemetry-native | OTel-compatible options | |
| Open Source | Apache 2.0 | Apache 2.0 |
| Self-hostable | ||
| Cloud-managed option | Coming soon | |
| Vendor-neutral OTLP export | Partial / via integrations | |
| LLM Monitoring | ||
| Token usage tracking | ||
| Cost per request | ||
| Latency / p95 metrics | ||
| Prompt & response logging | ||
| Broad LLM / framework auto-instrumentation | ||
| Infrastructure Monitoring | ||
| GPU monitoring (NVIDIA + AMD) | ||
| Vector DB tracing | Limited / via traces | |
| Multi-environment tagging | ||
| Developer Tools | ||
| Prompt Hub (versioning) | ||
| Evaluations (LLM-as-a-judge) | ||
| Secrets Vault | ||
| Fleet Hub (multi-deployment) | ||
| AI agent monitoring UI | Via traces / experiments | |
| Observability Backends | ||
| Grafana / Prometheus export | ||
| Any OTLP-compatible backend | Limited | |
Choose OpenLIT when…
- You want OpenTelemetry-native telemetry you can also send to Grafana, Datadog, or any OTLP backend
- You need GPU monitoring alongside LLM traces for self-hosted inference
- You want Vault, Fleet Hub, and agent monitoring included with evals and Prompt Hub
- You prefer a platform built around OTel conventions end to end
Choose Comet Opik when…
- You are already invested in the Comet ML ecosystem and want Opik’s eval workflows
- Your primary need is tracing + evaluation without GPU or Vault features
- You prefer Opik’s experiment-centric UX over an OTel-first platform model
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