Operations / procurement

Vendor comparison

Immediate result: A weighted scoring matrix of vendors with total cost, risks and a recommendation.

Problem it solvesChoosing a vendor turns into a debate because options aren't compared on the same criteria.

Download SKILL.md
Add this skill to
ChatGPTClaudeGeminiPerplexity

You paste

3 payroll software vendors, 120 employees, priorities: compliance, support, price

You get

Weights: compliance 40% · support 30% · price 30%

Vendor B: 4.4 weighted — best on compliance (auto PF/ESI filings)

Negotiate: free migration and a 3-year price lock.

About this skill

About Vendor comparison

Choosing a vendor turns into a debate when options aren't compared on the same criteria. This skill converts your priorities into weighted criteria, scores each vendor from one to five with reasons, computes weighted totals and total cost of ownership over three years, and recommends one — showing the maths and marking scores that rest on assumptions. It also lists what to negotiate with the winner. The comparison makes the decision transparent to finance and leadership. To use it, paste the skill into your assistant and send the vendors, their quotes or features, and what matters to you; the reply is laid out as “Criteria and weights”, “Scoring table” and “Total cost of ownership”.

Vendor comparison AI skill for Operations / procurement: you paste "3 payroll software vendors, 120 employees, priorities: compliance, support, price" and get "Weights: compliance 40% · support 30% · price 30%"
Vendor comparison — example input and the first lines it returns. Works in ChatGPT, Claude and Gemini.
Job profile
Operations & project management · Operations / procurement
Works in
ChatGPT, Claude, Gemini, Copilot, Claude Code
Format
Agent Skills (SKILL.md)
Price
Free, no sign-up
Install instructions

Copy, paste, send

  1. Cold email writerCopy skillCopied ✓1 Copy the skillPress Copy skill.
  2. ANY AI ASSISTANTSKILLPaste here, then press Enter2 Paste it into a new chatChatGPT, Claude, Gemini or Copilot.
  3. ANY AI ASSISTANT3 Send your inputSend the vendors.
The skill — paste this into your AI assistant
# Skill: Vendor comparison

You are running the "Vendor comparison" skill for me. I work as: Operations / procurement. What I need from you: a weighted scoring matrix of vendors with total cost, risks and a recommendation.

## When I send you the vendors, their quotes or features, and what matters to me
1. Turn your priorities into weighted criteria.
2. Score each vendor 1–5 per criterion, with reasons.
3. Compute weighted totals and three-year cost.
4. Recommend one and list what to negotiate.

## Reply in this format
- Criteria and weights
- Scoring table
- Total cost of ownership
- Recommendation
- Negotiation points

## Rules
- Show weighted score maths.
- Mark scores based on assumptions.
- Use only the facts I give you; mark anything you had to assume with [ASSUMPTION].
- If something essential is missing, ask me one short question, then continue.
- No preamble or filler: start with the result.

Confirm you're ready in one line, then wait for me to send the vendors, their quotes or features, and what matters to me.

Then sendThe vendors, their quotes or features, and what matters to you. For example: 3 payroll software vendors, 120 employees, priorities: compliance, support, price

ChatGPT

  1. Fastest: paste the skill as your first message in a new chat, then send your input.
  2. To keep it: open a Project, choose Instructions (or Settings → Personalization → Custom instructions for every chat) and paste it there.
  3. To share it with a team: create a custom GPT and paste the skill into its Instructions.
  4. In the Codex app: copy the skill's folder into ~/.codex/skills/ (or Customize → Skills → Add → Create skill).

Claude

  1. Fastest: paste the skill as your first message in a new chat, then send your input.
  2. To keep it: create a Project, open Project instructions and paste the skill.
  3. As a Claude Skill: download the skill's ZIP, then in Claude open Settings → Skills → Add → Upload skill and choose the file.

Gemini

  1. Fastest: paste the skill as your first message in a new chat, then send your input.
  2. To keep it: open Gems → New Gem, paste the skill into Instructions and save.

Microsoft Copilot

  1. Fastest: paste the skill as your first message, then send your input.
  2. In Microsoft 365 Copilot, save it as a prompt or paste it into an agent's instructions to reuse it.

Any other assistant

  1. Paste the skill as the system prompt or first message in any chat assistant (Perplexity, Meta AI, DeepSeek, Mistral, local models).
  2. Coding agents that read the Agent Skills format (SKILL.md) can load the downloaded file from their skills folder.

Install it permanently

Upload it to Claude, add it to ChatGPT's Codex app, clone it into Claude Code, or download the SKILL.md for any agent. Full guide with screenshots →

Download the ZIP and upload it in Claude. Claude then uses the skill on its own whenever a request matches.

Download ZIP

Quick setup

  1. In Claude, open Settings → Skills (under Customize).
  2. Click Add → Upload skill.
  3. Choose the ZIP — don't unzip it — and make sure the skill is switched on.
Claude Settings with Skills selected under Customize, and the Add menu open showing Upload skill, Create a skill, Create with Claude and Record your screen

Repositoryscienceofapps.com/skills/ai-skills.git · all 200 skills, one folder each, plain git over HTTPS

What it does

The steps it follows

  1. Turn your priorities into weighted criteria.
  2. Score each vendor 1–5 per criterion, with reasons.
  3. Compute weighted totals and three-year cost.
  4. Recommend one and list what to negotiate.
What you get back

The reply format

  • Criteria and weights
  • Scoring table
  • Total cost of ownership
  • Recommendation
  • Negotiation points

Rules it never breaks

  • Show weighted score maths.
  • Mark scores based on assumptions.
  • Uses only the facts you give it and marks assumptions.
FAQs

Questions about Vendor comparison

What does the Vendor comparison skill do?

Choosing a vendor turns into a debate because options aren't compared on the same criteria. The skill fixes that: a weighted scoring matrix of vendors with total cost, risks and a recommendation.

How do I install Vendor comparison in ChatGPT, Claude or Gemini?

Copy the skill and paste it as the first message of a new chat, then send your input. To keep it, paste it into a ChatGPT Project or custom GPT, a Claude Project or a Gemini Gem, or upload the SKILL.md file as a Claude Skill.

What do I send Vendor comparison after installing it?

Send the vendors, their quotes or features, and what matters to you. If something essential is missing, the skill asks you one short question and then continues.

Is the Vendor comparison skill free?

Yes. It's free to copy, use and adapt, with no sign-up, and works in the free versions of ChatGPT, Claude, Gemini and Copilot.

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