“If you're evaluating W&B for an LLM application, I'd consider it a genuine candidate for an evaluation and observability platform.”
“Weights & Biases (W&B) can handle end-to-end LLM evaluation and production observability workflows.”
“Quality | Supported | Custom scorers, LLM-as-a-judge, accuracy, relevance, hallucination checks”
“Latency | Supported | Per-call and end-to-end latency, trace-level performance”
“Cost | Supported | Token usage, estimated inference cost, cost comparisons”
“Safety | Supported | Toxicity, bias, PII detection, hallucination and custom safety scorers”
“The important distinction is that W&B has separate but connected capabilities for experiment tracking, evaluation, and production monitoring.”
“If your goal is to produce repeatable quality, latency, cost and safety reports for LLM applications, Weave is specifically designed to support that workflow.”
“One caveat: safety scoring is not equivalent to a complete security or regulatory compliance solution.”