HomeCasa Comparison table from several sources, with the origin of every data point
Turn several articles, spec sheets or reports into a comparison table where every cell names its source, with conflicts highlighted, gaps marked and a cautious conclusion. Designed for ChatGPT, Claude, Gemini and Perplexity. It includes 4 customizable variables and you can copy it for free in one click.
Intermediate · Text · Pending editorial review
Prompt
Act as a research analyst who compares information from mixed sources without losing traceability.
Context:
- What I want to compare: {{topic}}
- Sources (label them S1, S2, S3...):
"""
{{sources}}
"""
- Comparison criteria: {{criteria}}
- What I will use the comparison for: {{purpose}}
Deliverables:
1. Source inventory: label, type (official, press, vendor, blog, study), date, author or organization and any likely bias or conflict of interest.
2. Comparison table: one row per option or item and one column per criterion. In each cell, the value and its source in brackets, for example "12 months [S2]". If no source says it, write "not stated".
3. Normalized units (same currency, unit and period), noting any conversion you made.
4. Conflicts: data points where the sources disagree, with both values and which one looks more reliable or recent, and why.
5. Gaps: criteria that matter for {{purpose}} but that no source covers.
6. A short conclusion aimed at {{purpose}}, with the necessary caveats.
Constraints:
- Do not fill cells from your own knowledge. If you think it is essential, add it separately and mark it [OUTSIDE THE SOURCES: verify].
- Do not pick a winner if the data does not support it; say what would be needed to decide.
- If the criteria are unclear or the sources cannot be compared, ask me first.
Format: a Markdown table, followed by short lists for conflicts, gaps and conclusion.How to use it
Paste each source preceded by its label (S1, S2...) or, with Perplexity, ask it to find and label the sources. Copy the table into a spreadsheet and review the rows with conflicts first.
Usage example
Topic: three renters insurance policies for an apartment in Chicago · Sources: each insurer's policy terms and a press comparison · Criteria: annual price, deductible, water and theft coverage · Purpose: choose one.
Sample output
1. Source inventory
| Source | Type | Date | Author | Likely bias |
|---|---|---|---|---|
| S1 | Vendor | [FILL IN] | Tool A | Commercial |
| S2 | Industry blog | [FILL IN] | [FILL IN] | Possible affiliate links |
| S3 | Vendor | [FILL IN] | Tool C | Commercial |
2. Comparison table
| Criterion | Tool A | Tool B | Tool C |
|---|---|---|---|
| Price per user/month | $10 [S1] | $12 [S2] | not stated |
| Integrations | 50+ [S1] | Calendar and email [S2] | 30+ [S3] |
| Permissions | Per project [S1] | not stated | Role-based [S3] |
| Support hours | 24/5 chat [S1] | not stated | Business hours, email [S3] |
| Storage | 100 GB [S1] | 50 GB [S2] | not stated |
4. Conflicts
- Tool A integrations: S1 says "50+", S2 mentions "around 20". S1 is official, but S2 may count native ones only.
5. Gaps
- Tool C pricing and Tool B permissions: no source covers them.
6. Conclusion
The data can't support a confident pick yet: Tool C's price and Tool B's permissions are missing, and both matter for 15 users…
Key facts
- Category
- Research · Source analysis
- Output type
- Text
- Level
- Intermediate
- Designed for
- ChatGPT, Claude, Gemini and Perplexity
- Verified in
- Pending editorial verification
- Variables
- What to compare, Sources, Criteria and Purpose
- Language
- English
- Price
- Free, no sign-up
- Updated
- Nov 7, 2026
Frequently asked questions
Why name the source in every cell?
Because data loses its context in a table. Knowing where each figure comes from lets you check it, spot which source is outdated and explain your choice to others.
What should I do with the cells marked "not stated"?
They are your list of open questions: look them up in the original source or ask the provider directly before deciding.
What is this prompt for?
Turn several articles, spec sheets or reports into a comparison table where every cell names its source, with conflicts highlighted, gaps marked and a cautious conclusion.
Which AI tools does it work with?
It is designed for ChatGPT, Claude, Gemini and Perplexity. We have not verified it in these tools yet, so results may vary between them.
How do I customize the prompt?
Click “Customize” and fill in the variables (What to compare, Sources, Criteria and Purpose). The text updates instantly and you can then copy it in one click. Values are stored only in your browser.
Do I need experience to use it?
It is intermediate: it helps to know the topic so you can provide good context and review the result critically.
Is this prompt free?
Yes. Every HomeCasa Prompts prompt is free, with no sign-up or subscription. You can also use them in professional projects.
Can I trust the AI output?
Treat it as a high-quality draft: always check data, figures and important claims before publishing or making decisions.