# Linking AssemblyAI as a source - Docs

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Let AI connect your sources for you

Skip the manual setup — run this in your project and the wizard auto-detects your databases and APIs and connects them to PostHog.

`npx @posthog/wizard warehouse`

[Learn more](/wizard.md)

![PostHog Wizard hedgehog](https://res.cloudinary.com/dmukukwp6/image/upload/wizard_3f8bb7a240.png)

**Alpha release**

This source is currently in **alpha**. The interface and available tables may change.

The AssemblyAI connector syncs your speech-to-text transcripts into the PostHog Data warehouse, so you can analyze your transcription data alongside your product data. AssemblyAI retains only the last 90 days of transcripts, so only those are available to sync.

## Prerequisites

You need an AssemblyAI account with API access so you can create an API key.

## Adding a data source

1.  In PostHog, go to the [Sources tab](https://app.posthog.com/data-management/sources) of the data pipeline section.
2.  Click **\+ New source** and click **Link** next to this source.
3.  Enter your credentials (see [Configuration](#configuration) below) and click **Next**.
4.  Select the tables you want to sync, choose a sync method and frequency, then click **Import**.

Once the syncs are complete, you can start querying this data in PostHog.

When linking AssemblyAI, you'll need:

-   **API key** – find your key in the [AssemblyAI dashboard](https://www.assemblyai.com/app/api-keys).
-   **Region** – choose the region that matches your account, either US (`api.assemblyai.com`) or EU (`api.eu.assemblyai.com`).

## Sync modes

Each table can be synced in one of several modes, depending on what the source supports:

-   **Webhook** (when available) – the source pushes changes to PostHog in real time. Fastest freshness, lowest ongoing cost, and the only mode that reliably captures updates and deletes.
-   **Incremental** – only new or updated rows are synced on each run, using a cursor field (such as an `updated_at` timestamp). Cheaper than a full refresh, but deletes aren't captured.
-   **Append only** – new rows are appended using a cursor field; existing rows are never updated. Ideal for immutable, append-only tables like event logs.
-   **Full refresh** – the whole table is reloaded on every sync. Use it when a table has no reliable cursor or when you need deletions reflected.

See [sync methods](/docs/cdp/sources.md#sync-methods) for a full explanation of how each mode works and how to choose between them.

This source is full refresh only.

## Configuration

| Option | Type | Required |
| --- | --- | --- |
| API key | password | Yes |
| Region | select | Yes |

## Supported tables

| Table | Description | Sync method | Incremental field | Primary key |
| --- | --- | --- | --- | --- |
| transcripts | Lists transcripts and hydrates each with its full text, words, and audio-intelligence results. AssemblyAI retains only the last 90 days. Full refresh only. | Full refresh | created | — |

## Troubleshooting

-   If you see an authentication error, your AssemblyAI API key may be invalid or revoked. Create a new key in the AssemblyAI dashboard, then reconnect.

If your sync is failing or data looks wrong, see the [Data warehouse troubleshooting guide](/docs/data-warehouse/troubleshooting.md). If that doesn't help, [contact support](https://us.posthog.com/#panel=support%3Asupport%3Adata_warehouse%3A%3Atrue) – we're happy to help.

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