The useful comparison starts with whether your task is finding evidence, developing an answer, or both.
For finding source material
Use a narrow question and inspect the resulting sources. Measure relevance and whether each claim is supported, not just how many links appear.
For turning information into a draft
Provide the verified material and ask for a structured summary. Keep facts from your sources separate from the model’s suggestions.
A practical decision
Choose based on the particular workflow and account features available to you. Neither a conversational format nor a list of citations guarantees accuracy.