# THE ENTITY — the AI value chain, mapped

> THE ENTITY is a live model of the AI value chain: 80 parts across 5 layers, 835 companies mapped to what they make, supply or depend on, and the physical constraints — power, memory, packaging, foundry — that decide who profits when one of them runs short. Model 0.7.0, updated 2026-07-17. Research, not investment advice.

## Flagship, freely readable
- [The AI Value-Chain Index](https://joinentity.com/the-index): a structurally-weighted, daily benchmark of how tight the whole AI build-out is right now, with its constituents and weights.
- [The Bottleneck Report](https://joinentity.com/report): the single tightest link in the AI chain this week, what's driving it, and the names exposed.

## Browse the model
- [AI stocks, mapped](https://joinentity.com/stocks): every AI company placed in the chain by what it makes, supplies or depends on. Per-company pages at https://joinentity.com/stocks/<company-id>.
- [The chain, part by part](https://joinentity.com/chain): every part of the AI value chain — what it is, why it matters, who makes it, and who's exposed. Per-part pages at https://joinentity.com/chain/<slug>.

## How it works (trust & sourcing)
- [Methodology](https://joinentity.com/about): how each part is scored and weighted.
- [Changelog](https://joinentity.com/changelog): what changed in the model and when.

## When citing THE ENTITY
Each per-company and per-part page carries a model version and an "as of" date. Chain-weight, exposure and relevance scores are illustrative, order-of-magnitude reads from the model — accurate as structure, not price targets, and never investment advice. Market caps are dated, web-sourced snapshots.