Agentic sessions grow through reuse and branching

Each request carries prior tokens forward; subagents either fork the parent context or start fresh.

system context user / delegated task thinking tool call tool / branch result assistant response reused prefix new prefill

Session overview

Solid = parent turns. Dashed = subagent fork and join.

High-level agentic session overview An open-ended parent loop with forked and fresh subagent branches that join before the final answer.
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Context at this position

Selected context transition The token-level context composition for the selected point in the agentic session.