The 3 research superpowers

• 01Perplexity — real-time answers WITH sources. It searches and cites so you can trust it.
• 02NotebookLM — upload 50 PDFs, get a chat that only answers from YOUR docs. Ask hard questions.
• 03Claude (Sonnet 4/Opus) — 200k+ token context. Paste an entire book, ask anything.
• 04ChatGPT Deep Research — 30-min autonomous research on your behalf. Ships a full report.