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ChatGPT Prompt to Compare Offers

Comparing commercial offers is a crucial step in any purchasing process, whether for a phone subscription, insurance, SaaS software, or a service provider. Yet this task is often tedious: offers use different formats, highlight various criteria, and sometimes hide important conditions in the fine print. ChatGPT radically transforms this experience by becoming your personal comparative analyst. By providing it with details of several offers, it can structure them in a standardized table, identify key differences, calculate real costs over different periods, and highlight the advantages and disadvantages of each option according to your priority criteria. No more hours spent juggling browser tabs and Excel files: in seconds, you get a clear and reasoned summary that allows you to make an informed decision. Whether you are an individual comparing three internet plans or a procurement director evaluating supplier proposals, ChatGPT adapts its analysis to your level of requirement and your specific priorities.

The prompt

ChatGPT

You are an expert comparative analyst. I will provide you with several commercial offers and I want you to compare them exhaustively and objectively.

Here are the offers to compare:

  • Offer 1: [paste details of offer 1]
  • Offer 2: [paste details of offer 2]
  • Offer 3: [paste details of offer 3]

My priority criteria (from most to least important):

  1. [CRITERION_1, e.g., total price over 24 months]
  2. [CRITERION_2, e.g., customer service quality]
  3. [CRITERION_3, e.g., flexibility/commitment]

My context: [briefly describe your situation and needs]

Perform the following analysis:

  1. Comparison table: present all offers side by side with standardized features (monthly price, total price, included services, limits, commitment, hidden fees)
  2. Gap analysis: identify significant differences between offers
  3. Real cost: calculate the total cost of ownership over 12 and 24 months including all fees (activation, early termination, mandatory options)
  4. Points of vigilance: flag potentially disadvantageous clauses or restrictive conditions
  5. Reasoned recommendation: based on my priority criteria, rank the offers from best to least suitable with justification for each position

Be factual, precise, and clearly flag any missing information that could influence the decision.

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Why it works

This prompt works because it assigns an expert role to ChatGPT (comparative analyst), which activates a structured and analytical response register. The request for data normalization forces the model to align heterogeneous information on a common grid, eliminating presentation biases. Finally, the explicit prioritization of criteria and the request for a reasoned recommendation channel the analysis toward an actionable conclusion rather than a simple description.

Expected result

You will get a clear comparison table with all offers aligned on the same criteria, followed by a detailed analysis of differences in price, services, and conditions. The response will include a calculation of the real cost over different periods, alerts on clauses to watch out for, and a final recommendation ranking the offers according to your priorities with concrete arguments for each choice.

Variants by level

FAQ

How many offers can I compare simultaneously with ChatGPT?
ChatGPT can effectively compare up to 5-6 offers simultaneously while maintaining quality analysis. Beyond that, the comparison becomes less readable and the model may miss details. If you have more than 6 offers, start with a first pass of prescreening by asking ChatGPT to eliminate clearly unsuitable offers based on your main criteria, then perform an in-depth analysis on the 3-4 finalists.
How can I ensure ChatGPT does not favor one offer over another?
To ensure objectivity, provide information for each offer in a similar format and with the same level of detail. Explicitly specify your comparison criteria and their relative weight in the prompt. You can also ask ChatGPT to justify each score with concrete facts from the offers. If you suspect bias, ask it to redo the analysis by reversing the order of presentation of the offers or by arguing in favor of the lowest-ranked offer.
Can ChatGPT compare offers from screenshots or PDFs?
With ChatGPT-4o, you can send screenshots or images of commercial brochures and ask the model to extract information for comparison. For PDFs, you can upload them directly into the conversation. However, for optimal analysis, it is recommended to copy and paste the key information as plain text, as this avoids interpretation errors related to layout and ensures all details are considered in the analysis.

Related prompts

ChatGPT Prompt to Negotiate a ContractChatGPT Prompt to Analyze a QuoteChatGPT Prompt to Write a TenderChatGPT Prompt to Calculate a Budget

How to use this prompt

  1. Copy the prompt with the button above.
  2. Paste it into ChatGPT, Claude or your favorite AI assistant.
  3. Replace the bracketed variables with your details, then refine the result.

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