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Practice quizzes for Australian citizenship, driving, and immigration topics

Quizzes

A sub-agent is a full separate agent instance with its own context; a parallel tool call is a concurrent action within the same agent's single turn

Parallel tool calls can only run two tools at a time; sub-agents have no such limit

Sub-agents use a different model than the coordinator; tool calls use the same model

Tool calls are billed per token while sub-agents are billed per invocation