Custom Span Processor Framework For Extensible Telemetry Pipelines

OpenTelemetry-based LLM observability with automatic instrumentation.

Unique: Provides a standard span processor interface that integrates with OpenTelemetry SDK, enabling custom telemetry pipelines without forking or modifying core instrumentation code

vs others: Extensible processor framework enables custom logic without vendor lock-in, whereas proprietary SDKs offer limited customization options

via “framework-specific application wrapping with semantic span kinds”

Backwards-compatibility package for API of trulens_eval<1.0.0 using API of trulens-*>=1.0.0.

Unique: Provides framework-specific wrappers that generate semantically-typed spans (GENERATION, RETRIEVAL, EVAL) tailored to LLM workflows, rather than generic function call spans. Wrappers intercept framework-level operations (LLM calls, vector search) to assign correct span kinds automatically.

vs others: More semantic than generic OTEL instrumentation; more framework-aware than manual span creation; preserves original framework APIs unlike some observability solutions that require code rewriting.