Short answer: Claude often outperforms ChatGPT for multi‑paper synthesis—it's designed for long contexts and tends to produce more structured, cautious summaries with fewer hallucinations. ChatGPT remains useful for quick iterative Q&A and editing. Practical test: run the same prompt on a 5–10 paper pilot, verify claims against source quotes, and use chunked inputs plus explicit citation extraction. Compare details here: Compare Claude and ChatGPT