Key features
Core capabilities each platform advertises.
OpenObserve- Logs, metrics, traces, RUM, and session replay
- OpenTelemetry-native LLM tracing with token and cost tracking
- Online evaluations with LLM-judge or remote scorers
- Nested traces for every LLM call, tool run, and agent turn
- Threads for multi-turn sessions
- Online evals on live production traffic
- LLM-judge, code, and human evaluators
- Datasets from production logs and experiments at scale
- Monitors with Slack, email, and webhook alerts
- Prompt versioning and deployment without code changes