Features
LLM agent observability with OpenTelemetry tracing
Automatic issue detection in traces (March 2026)
Multimodal tracing for images, audio, and files (April 2026)
50+ built-in evaluation metrics and LLM judges
Prompt Registry with versioning and optimization
AI Gateway for unified LLM API access with guardrails (April 2026)
Agent Server for one-command production deployment
Role-Based Access Control (RBAC) with Admin UI (May 2026)
Automatic trace archival to object storage (May 2026)
One-click coding agent onboarding (May 2026)
Hermes Agent support (May 2026)
Experiment tracking and hyperparameter tuning
Model Registry with lineage and deployment
Model evaluation and comparison
Integration with 100+ tools and frameworks
Hierarchical LLM traces with cost/latency filtering
LLM-as-a-judge evaluation and heuristic functions
One-click prompt deployment and rollback
Playground for side-by-side model/input testing
Experiments with test case comparison
Human annotation and golden dataset creation
Cost and latency dashboards with alerts
Monitors and alerts (Slack, webhooks, GitHub Actions)
Full-text search (Cloud rollout)
Code evaluators (Python/TypeScript)
Langfuse Assistant (natural-language queries)
Multi-modal datasets (images, audio, video, documents)
OpenTelemetry-native instrumentation
Python and TypeScript native SDKs
REST APIs and S3 blob storage export
