> ## Documentation Index
> Fetch the complete documentation index at: https://octolane.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# The Octolane data model

> How Accounts, Contacts, Opportunities, Tasks, Meetings, and Activities relate.

Octolane is built around a small set of core objects. Everything you do. Every email, meeting, AI field, custom field. Extends them.

## Core objects

| Object          | What it is                                           | How it's created                                           |
| --------------- | ---------------------------------------------------- | ---------------------------------------------------------- |
| **Account**     | A company                                            | Auto-created from every external email and meeting         |
| **Contact**     | A person, linked to one or more accounts             | Auto-created from email participants and meeting attendees |
| **Opportunity** | A deal: account + value + stage + close date         | Auto-detected from email patterns, or created manually     |
| **Task**        | A first-class to-do with owner, due date, completion | Manual, AI-generated from meetings, or via API             |

## Activities

Activities are the events that happen on a record's timeline. They attach to Accounts, Contacts, Opportunities, and Tasks.

| Activity      | What it is                                                                    |
| ------------- | ----------------------------------------------------------------------------- |
| **Email**     | Inbound and outbound messages, auto-threaded to the right record              |
| **Meeting**   | Calendar events, with optional recording, transcript, and recap               |
| **Note**      | Free-form text written by you or your team                                    |
| **AI action** | Field updates, draft sends, stage changes. Every AI move logged with citation |

Every record has a unified timeline showing every activity in order.

## Custom fields

Add any field to any standard object: text, number, date, select, multi-select, URL, currency, formula, lookup. See [Custom fields](/introductions/custom-fields).

## AI fields

Fields that fill themselves in by reading conversations. Describe what to track in plain English. Octolane keeps the value current. See [AI fields](/introductions/ai-fields).

## Custom objects

<Note>Available on the **Team** plan.</Note>

Model anything beyond Accounts, Contacts, and Opportunities. Partners, Investors, Projects, Properties, Loans, Locations. Custom objects get the same treatment as standard ones: AI fields, views, automation, API access. See [Custom objects](/introductions/custom-objects).

## How everything connects

* A **Contact** belongs to one or more **Accounts**.
* An **Opportunity** belongs to one **Account** and has one or more **Contacts**.
* A **Task** can attach to an Account, Contact, or Opportunity.
* Every **Email**, **Meeting**, **Note**, and **AI action** attaches to the relevant Account, Contact, and Opportunity automatically.
* **Custom objects** can relate to standard objects through lookup fields.