For citation-heavy investigative briefs I'd prioritize Claude for outlines and summaries: it handles longer context and stays more analytical, which helps keep citations organized. Use prompts that require explicit source provenance—ask for exact quotes, URLs, timestamps, and a source-confidence column. Always verify every cited link and quote against the original. For quick cross-checks or final web lookups, run a pass through ChatGPT with browsing enabled.

Compare their strengths here: Compare Claude and ChatGPT