Question
Define the question and scope: period, region, decision and permitted data. Upload only approved material.
A research stack helps find, organize and analyze material. Reliable results require checking original sources, individual claims and calculations.

A research stack helps find, organize and analyze material. Reliable results require checking original sources, individual claims and calculations.
Proposed workflow, not a demonstrated client result or a guarantee of error-free answers. Provider sources checked 16 September 2026.
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Proposed workflow, not a demonstrated client result or a guarantee of error-free answers. Provider sources checked 16 September 2026.
| No. | Tool | Check | Cost |
|---|---|---|---|
| 1 | Perplexity | Perplexity: open citations and read the relevant passage. A source label rates a website, not the accuracy of every individual claim. | Plan + usage + review |
| 2 | NotebookLM / Gemini Notebook | NotebookLM: current Google help uses Gemini Notebook. Distinguish source-grounded chat from advanced features with web search or code; record selected sources and mode. | Plan + usage + review |
| 3 | Claude | Claude: organize material and connect claims to evidence. Mark unsupported points as unknown; cited answers can still be wrong. | Plan + usage + review |
| 4 | Gemini | Gemini: linked sources may only be related content. Check whether the specific passage actually supports the claim. | Plan + usage + review |
| 5 | Calculation | Spreadsheet or code: preserve inputs, units, filters, denominators and calculation steps. Perform a separate cross-check; a generated number is not verification. | Plan + usage + review |
Proposed workflow, not a demonstrated client result or a guarantee of error-free answers. Provider sources checked 16 September 2026.
Define the question and scope: period, region, decision and permitted data. Upload only approved material.
Maintain an evidence table: claim, original URL, passage, publication date, access date, scope and contradictions. Two links to the same story are not independent evidence.
Check the summary and calculations separately. Read quotes in context; make missing data, assumptions and uncertainty visible.
An accountable person reviews decision-relevant claims and approves the report. Include dated sources, files and unresolved issues.
Proposed workflow, not a demonstrated client result or a guarantee of error-free answers. Provider sources checked 16 September 2026.
No. Direct support, relevant freshness and independent information matter. Unresolved contradictions must remain open.
A report with an evidence table, reproducible calculations, documented limits and human approval. Then assess which tools actually improve your process.
Matching stacks for other roles — each with a stack table, workflow and common mistakes.
A suitable AI stack follows the specific process and its data. A provider name, EU headquarters or self-hosting alone does not establish compliant processing.
Build around a campaign objective: supported claims, suitable media and accountable approval. Tools are optional components; brand quality requires review.
Back to the hub with the stack overview and all 7 role-based stacks.
The potential analysis defines the question, data and acceptance criteria. A limited pilot shows which research steps can be usefully supported.
Proposed workflow, not a demonstrated client result or a guarantee of error-free answers. Provider sources checked 16 September 2026.
Perplexity: open citations and read the relevant passage. A source label rates a website, not the accuracy of every individual claim.
NotebookLM: current Google help uses Gemini Notebook. Distinguish source-grounded chat from advanced features with web search or code; record selected sources and mode.
Claude: organize material and connect claims to evidence. Mark unsupported points as unknown; cited answers can still be wrong.
Gemini: linked sources may only be related content. Check whether the specific passage actually supports the claim.
Start potential analysis
If you want to prioritize a real process, a few clear inputs are enough for a strong first assessment.