Choose a research tool by where your evidence lives.
Do not choose from a feature checklist. Start with the evidence you need to inspect, then choose the tool that keeps that evidence easiest to verify.
Good fit when the answer should stay grounded in sources you supply.
Read guideUseful for flexible synthesis and drafting after evidence is collected.
Read guideUseful for document-heavy analysis, critique and structured reasoning.
Read guideDecision table
| Need | Start with | Why | Verify |
|---|---|---|---|
| Current web research | Perplexity | Source-oriented web discovery | Open the primary sources behind important claims |
| Your PDFs / notes / sources | NotebookLM | Source-grounded document workflow | Check whether citations actually support the summary |
| Flexible synthesis | ChatGPT | Broad analysis and drafting | Keep supplied evidence separate from model knowledge |
| Long-form critique | Claude | Document-heavy reasoning and drafting | Challenge polished conclusions that outrun the evidence |
Pros and tradeoffs
Pros: fast web orientation, visible sources, useful for finding where to read next.
Tradeoff: citations still need inspection; cited does not automatically mean correct.
Pros: keeps work centered on material you provide.
Tradeoff: a weak or stale source set produces a weak answer even if grounding is good.
Pros: flexible writing, comparison, structure and reasoning.
Tradeoff: easy to blur external facts with model-generated interpretation unless prompted carefully.
Pros: source collection, verification and synthesis can use different tools.
Tradeoff: forcing one tool to do every stage can make research less auditable.
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- Pick one real research question.
- Collect three known-good sources.
- Ask each candidate tool for the same answer.
- Count unsupported claims, source errors and cleanup time.
- Choose the workflow that makes verification easiest.