# Custom GPT: Weekly Competitor Teardown

> A Custom GPT that ingests a competitor's landing page, changelog, and pricing, then produces a 1-page teardown with positioning gaps and response ideas.

**Platform:** ChatGPT  
**Category:** chatgpt  
**Difficulty:** Beginner  
**Tags:** chatgpt, gpts, competitive, product  
**Updated:** 2026-06-24  
**Source:** https://promptfoo.tech/workflows/chatgpt-custom-gpt-competitive-teardown

## Overview
Competitor research is one of those tasks that never gets done consistently — a Custom GPT changes that. This build wires ChatGPT's web browsing + a knowledge file of your own positioning + a strict output template. Point it at a URL, get a one-page teardown in the exact format your team already uses.

## How it works
1. GPT builder with browsing enabled and file search on a Knowledge file (your positioning doc).
2. System prompt enforces the output template: 5 sections, no filler, cite the source URL for each claim.
3. Browsing pulls landing page + /pricing + /changelog if present.
4. Output is markdown; paste directly into Notion or Slack.

## Benefits
- Weekly teardowns take 3 minutes instead of 45.
- Consistent format makes month-over-month diffs easy.
- Grounded in your positioning, so ideas are relevant.

## Use cases
- Startup CEOs tracking 5-10 competitors monthly.
- PMMs preparing quarterly battle cards.
- Founders scanning YC batch launches.

## Step-by-step
### Step 1: Draft your positioning doc
One page: audience, promise, differentiators, prices, weaknesses. This is the file the GPT searches.

### Step 2: Create the Custom GPT
Name it 'Competitive Analyst'. Description: 'Given a competitor URL, produce a 1-page teardown.'

### Step 3: Write the system prompt
Include the output template verbatim (Sections: Positioning, Pricing, Product changes, Gap vs us, Recommended response).

### Step 4: Enable Browsing + File Search
Turn off Code Interpreter and Image Generation — they slow tool selection.

### Step 5: Test with 3 competitors
Refine the template until sections stay under 4 bullets each.

### Step 6: Share with your team
Publish to your workspace. Add a link in your PMM Notion homepage.

## Example
```
Prompt: 'Teardown of https://example.com'
Output: 'Positioning: horizontal PM tool for engineering leaders. Pricing: $19 seat. Product changes this month: AI issue clustering (Jun 4). Gap vs us: they lack cross-repo view. Response: highlight cross-repo demo in Q3 launch.'
```

## FAQs
**Isn't this what Perplexity does?**

Perplexity is better for open research. This GPT is opinionated toward your specific template and grounded in your positioning file.

**Cost?**

Included in ChatGPT Plus/Team. No API bill.

**Can it monitor for changes?**

Not directly — it's on-demand. Pair with an n8n RSS/changelog watcher if you want alerting.

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Licensed under CC-BY-4.0. Attribution: PromptFoo.tech