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n. / AI agents
Span
Definition
A span is a single recorded operation inside a trace, such as one model call, one tool call, or one retrieval step, with its own start time, duration, inputs, outputs, and status.
In more detail
Spans nest inside a parent trace, forming a timeline or graph. Parallel work, handoffs between agents, and repeated operations all show up as sibling or child spans under the same run.
Related terms
