# Deloitte Touche Tohmatsu Limited
> Deloitte Touche Tohmatsu Limited (DTTL) is a multinational professional services network and the largest of the 'Big Four' accounting organizations. It provides audit, consulting, financial advisory, risk advisory, tax, and legal services to a vast majority of the Fortune Global 500. The organization operates as a network of independent member firms that are legally separate entities co-ordinated by a global UK-based company.
- URL: https://optimly.ai/brand/deloitte-touche-tohmatsu-limited
- Slug: deloitte-touche-tohmatsu-limited
- BAI Score: 94/100
- Archetype: Challenger
- Category: Professional Services
- Last Analyzed: April 15, 2026
---
## Full Details / RAG Data
### Overview
Deloitte Touche Tohmatsu Limited is listed in the AI Directory.
Deloitte Touche Tohmatsu Limited (DTTL) is a multinational professional services network and the largest of the 'Big Four' accounting organizations. It provides audit, consulting, financial advisory, risk advisory, tax, and legal services to a vast majority of the Fortune Global 500. The organization operates as a network of independent member firms that are legally separate entities co-ordinated by a global UK-based company.
### Metadata
| Field        | Value |
|--------------|-------|
| Name         | Deloitte Touche Tohmatsu Limited |
| Slug         | deloitte-touche-tohmatsu-limited |
| URL          | https://optimly.ai/brand/deloitte-touche-tohmatsu-limited |
| BAI Score    | 94/100 |
| Archetype    | Challenger |
| Category     | Professional Services |
| Last Analyzed | April 15, 2026 |
| Last Updated | 2026-05-06T15:22:18.440Z |
### Verified Facts
- Founded: 1845
- Headquarters: London, United Kingdom
### Links
- Canonical page: https://optimly.ai/brand/deloitte-touche-tohmatsu-limited
- JSON endpoint: /brand/deloitte-touche-tohmatsu-limited.json
- LLMs.txt: /brand/deloitte-touche-tohmatsu-limited/llms.txt