Langtrace vs Opik
A side-by-side comparison of Langtrace and Opik, two Observability tools, drawn from Ignaite's continuously-verified listings.
Compared from listings verified as of
At a glance
| Attribute | Langtrace | Opik |
|---|---|---|
| Category | Observability | Observability |
| Pricing | FREEMIUM | FREEMIUM |
| License | Open core | Open core |
| Deployment | Hybrid | Hybrid |
| Platforms | Web, API | Web, API |
| Model support (differs) | Model-agnostic | BYO key / model |
| Vendor (differs) | Scale3 Labs | Comet |
The honest brief
Langtrace
Pure OpenTelemetry spans, so LLM traces export to any OTel backend (Grafana, Datadog) instead of a locked-in dashboard.
- Two-line SDK instrumentation
- Self-hostable / on-prem option
- Tracks token usage, latency, and cost
- Authored by OTel GenAI contributors
- Smaller team and ecosystem
- Fewer features than LangSmith
- Dashboard less polished
Opik
Fully self-hostable, pairing call tracing with built-in LLM-as-judge evals — own the stack or use Comet cloud.
- Self-host via Docker/Kubernetes
- Tracing plus evals in one tool
- Prompt management and dashboards
- Framework-agnostic integrations
- Younger than some rivals
- Hosted tier tied to Comet
- Self-host needs ops effort
- Smaller ecosystem than LangSmith