Which answer engine is often the most transparent about where its information comes from?

Perplexity is known for its transparency in sourcing, consistently providing citations and links to the original sources of its information. This allows users to verify the facts and explore the context of the answers. ChatGPT, Gemini, and Google AI Overviews, while powerful, often synthesize information without consistently providing direct, verifiable links to all their sources within the answer itself, making it harder to trace the origin of specific claims.