# OpenAI Deep Research TAM Prompt

> AI prompt template for calculating TAM and analyzing market segments

A structured prompt designed for OpenAI Deep Research or similar web-browsing models to evaluate total addressable market size. It guides the model to synthesize raw data from industry reports, community discussions, and reviews using top-down and multi-method market sizing approaches.

## The prompt

Template: 'I want to build a business that \[idea\] for \[target market\]. My goal is to minimize the time and effort to \[core value proposition\]. Here is some prior research I have already done. Use this to influence your analysis but DO NOT SKIP performing your own research. \[insert earlier research from Grok 3 / X\].' It instructs Deep Research to analyze content across many articles, podcast transcripts, reddit, App Store reviews, review websites and other sources. Goal: thoroughly understand Total Addressable Market, leveraging ALL THREE measurement methods, then combine into one TAM calculation: (1) Top-Down Approach — use industry reports, market research and macroeconomic data to estimate overall market size, then narrow to target segments by geography, demographics or industry filters (example: if the global smart home device market is $50B and the product is relevant to 40%, TAM is a share of that). (The captured tweet is truncated mid-example; the tweet text adds: measure addressable markets, analyze segments and jobs to be done.)

## What it is for

- Estimate total addressable market (TAM) using top-down and blended methodologies
- Analyze target market segments and primary jobs-to-be-done for a startup idea
- Feed qualitative customer signals from reviews and Reddit into deep-research models

## Key points

- Context framing that incorporates prior research while forcing independent web discovery
- Multi-source search directives spanning reports, transcripts, forums, and app reviews
- Instructions to calculate TAM using standard top-down market sizing and segment filtering
- Focus on jobs-to-be-done analysis alongside market valuation

## Pricing

Free

## Details

- Type: Prompt
- Category: [Business & Money](https://xiry.app/topics/business-money.md)
- Topic: [Market Research](https://xiry.app/topics/marketing-sales/market-research.md)
- Open source: no
- Platforms: Web
- For: Founders, product managers, and market researchers
- Tags: prompt, market research, tam, openai, startups

## Why it was saved

- [@tedx_ai, 21 February 2025](https://x.com/tedx_ai/status/1892963907033080152): The prompt for measuring TAM and market segments after the Grok pass.

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- [OpenAI Figure 9: ChatGPT Usage Topic Breakdown](https://xiry.app/resources/openai-figure-9-chatgpt-usage-topic-breakdown): Empirical breakdown of ChatGPT conversation topics across 1.1 million sampled sessions (Framework, Free)

Updated 11 October 2026. Page: https://xiry.app/resources/openai-deep-research-tam-prompt

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