Comparison

Weights & Biases Weave vs LangSmith vs Trussed for Agent Evidence

Weights & Biases Weave and LangSmith are tracing and evaluation platforms. They record inputs, outputs, and tool-call sequences after or during execution for debugging and scoring purposes. Neither platform's documented functionality includes pre-execution permission checks or the ability to block an agent action before it runs. Trussed AI operates as a runtime governance layer that enforces agent identity, least-privilege permissions, and t