Find a research tool for the evidence you need.
Choose the evidence scope you cannot compromise on. We show which tools still fit and which need checking, with the company pages behind each result.
This finder currently covers ChatGPT, Claude, Gemini, Gemini Notebook, Microsoft 365 Copilot, Notion AI, and Perplexity. It uses company sources, not hands-on testing, and it does not rank the tools.
Describe the evidence you need
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Start with one hard requirement.
The finder checks 7 tools. Describe your need above or edit the fields, then it will show documented matches, conditions, unknowns, and eliminations.
- ChatGPTFree; Go $8/mo (may include ads); Plus $20/mo; Pro from $100/mo
- ClaudeFree; Pro $20/mo ($17/mo billed yearly)
- Google GeminiFree; Plus from $4.99/mo; Pro $19.99/mo
- Gemini NotebookFree; Plus $4.99/mo; Pro $19.99/mo
- PerplexityFree; Pro $20/mo; Max $200/mo
- Notion AIFree/Plus limited trials; Business $20/member/mo annually
- Microsoft 365 CopilotPaid add-on: first-year $18/user/mo annually + base plan