# Ghim AI

> Ghim AI provides GEO, AI Search, AI Visibility and ChatGPT Ads services for businesses in Vietnam. Official site: https://ghimai.com.

Ghim AI publishes service information, methodology, knowledge articles, first-party research and case evidence. Canonical human-readable pages remain the primary source; Markdown and JSON endpoints are alternate representations or indexes.

## About
- [About Ghim AI](https://ghimai.com/gioi-thieu): Official identity, scope and contact information.
- [Methodology](https://ghimai.com/phuong-phap): How Ghim AI measures AI Visibility and related metrics.

## Services
- [GEO services](https://ghimai.com/dich-vu-geo): GEO service scope and current offer.
- [GEO Audit](https://ghimai.com/geo-audit): Audit scope and deliverables.
- [AI Visibility](https://ghimai.com/ai-visibility): Measurement framework and service information.
- [ChatGPT Ads](https://ghimai.com/chatgpt-ads): ChatGPT Ads setup, pilot and management service.

## Key knowledge
- [What is GEO?](https://ghimai.com/kien-thuc/geo-la-gi): GEO concepts, SEO relationship and measurement.
- [What is AI Search?](https://ghimai.com/kien-thuc/ai-search-la-gi): AI Search, platform differences and website preparation.
- [How to appear on ChatGPT](https://ghimai.com/kien-thuc/xuat-hien-tren-chatgpt): Crawl, entity, content and citation considerations.
- [What is AI citation?](https://ghimai.com/kien-thuc/citation-la-gi): Source and citation concepts for AI answers.
- [What is entity authority?](https://ghimai.com/kien-thuc/entity-la-gi): Brand/entity consistency for AI Search.
- [What are ChatGPT Ads?](https://ghimai.com/kien-thuc/chatgpt-ads-la-gi): ChatGPT Ads category overview.
- [ChatGPT Ads October 2026 update](https://ghimai.com/kien-thuc/chatgpt-ads-cap-nhat-thang-10-2026): Dated 5 October 2026 update covering visual ads, measurement expansion, incrementality and brand suitability boundaries.
- [ChatGPT Ads in Vietnam](https://ghimai.com/kien-thuc/chatgpt-ads-viet-nam): Current Vietnam availability and conditions; verify the date on the page.
- [How to run ChatGPT Ads](https://ghimai.com/kien-thuc/cach-chay-quang-cao-chatgpt): Ads Manager setup and campaign workflow.
- [Measure ChatGPT Ads](https://ghimai.com/kien-thuc/chatgpt-ads-do-luong-hieu-qua): Measurement layers, conversion semantics, Ads Manager vs GA4, Pixel/CAPI and business outcomes.
- [ChatGPT Ads cost and billing](https://ghimai.com/kien-thuc/chi-phi-chatgpt-ads): CPC/CPM, click vs impression billing, budgets and cost interpretation.

## Answers
- [Answer Hub](https://ghimai.com/answers): Human-readable directory of Ghim AI canonical questions.
- [Answer Manifest](https://ghimai.com/answers/index.json): Machine-readable mapping of answer IDs to canonical pages and Markdown representations.

## Research and evidence
- [Research](https://ghimai.com/research): First-party GEO and AI Visibility research.
- [Vietnam ChatGPT Ads vertical-fit study](https://ghimai.com/research/nganh-nao-phu-hop-chatgpt-ads-viet-nam-2026): Task 43 first-party and external evidence on which verticals are worth testing first in Vietnam.
- [Vietnam ChatGPT Ads conversion reality study](https://ghimai.com/research/chatgpt-ads-conversion-viet-nam-2026): Task 43 first-party evidence separating clicks, platform conversions, inquiries and qualified leads.
- [Case studies](https://ghimai.com/case-study): First-party case evidence with scope and limitations.

## Machine-readable Markdown
- [GEO](https://ghimai.com/kien-thuc/geo-la-gi.md)
- [Dịch vụ GEO](https://ghimai.com/dich-vu-geo.md)
- [GEO Audit](https://ghimai.com/geo-audit.md)
- [AI Search](https://ghimai.com/kien-thuc/ai-search-la-gi.md)
- [ChatGPT visibility](https://ghimai.com/kien-thuc/xuat-hien-tren-chatgpt.md)
- [AI Visibility](https://ghimai.com/ai-visibility.md)
- [AI citation](https://ghimai.com/kien-thuc/citation-la-gi.md)
- [Entity](https://ghimai.com/kien-thuc/entity-la-gi.md)
- [ChatGPT Ads](https://ghimai.com/kien-thuc/chatgpt-ads-la-gi.md)
- [ChatGPT Ads Vietnam](https://ghimai.com/kien-thuc/chatgpt-ads-viet-nam.md)
- [ChatGPT Ads setup](https://ghimai.com/kien-thuc/cach-chay-quang-cao-chatgpt.md)