You must specify either a regional or multi-regional [location](https://cloud.google.com/about/locations) for data storage and document processing.

Document AI supports the following multi-region locations:

- `us` (United States)
- `eu` (European Union)

Document AI provides limited support for the following
single-region locations:

- `asia-south1` (Mumbai)
- `asia-southeast1` (Singapore)
- `australia-southeast1` (Sydney)
- `europe-west2` (London)
- `europe-west3` (Frankfurt)
- `europe-west4` (Amsterdam)
- `northamerica-northeast1` (Montréal)

You can follow instructions to [set up regions in the API](https://docs.cloud.google.com/document-ai/docs/setup#locations).

## Capabilities by region

Document AI is offered with varying capabilities by region.

### CE with GenAI\*

| Region | v1.5 | v1.5 Pro | v1.5.1 | v1.6 | v1.6 Pro | v3.1 | v3.5 |
|---|---|---|---|---|---|---|---|
| `Global` |   |   |   | Yes | Yes |   |   |
| `eu (multi region)` | Yes | Yes | Yes |   |   | Yes | Yes |
| `us (multi region)` | Yes | Yes | Yes |   |   | Yes | Yes |
| Single-region locations |
| `europe-west4` | Yes | Yes | Yes |   |   |   |
| `us-central1` | Yes | Yes | Yes |   |   |   |
| `asia-south1` | Yes† |   |   |   |   |   |   |
| `asia-southeast1` | Yes† |   |   |   |   |   |   |
| `australia-southeast1` | Yes† |   |   |   |   |   |   |
| `europe-west2` | Yes† |   |   |   |   |   |   |
| `northamerica-northeast1` | Yes† |   |   |   |   |   |   |
| \* Custom extractor with generative AI | † Fine-tuning unavailable. |

### CE custom\*

| Region |   |
|---|---|
| `us` | Yes |
| `eu` | Yes |
| Single-region locations |
| `asia-south1` | Yes |
| `asia-southeast1` | Yes |
| `australia-southeast1` | Yes |
| `europe-west2` | Yes |
| `europe-west3` | Yes |
| `northamerica-northeast1` | Yes |
| \*Custom-based and template-based extractor |   |

### OCR

| Region | v1.2 | v2.0 | v2.1 | v2.1.1 (Preview) |
|---|---|---|---|---|
| `us` | Yes | Yes | Yes |   |
| `eu` | Yes | Yes | Yes |   |
| Single-region locations |
| `asia-south1` |   |   |   | Yes |
| `asia-southeast1` |   |   |   | Yes |
| `australia-southeast1` |   |   |   | Yes |
| `europe-west2` |   |   |   | Yes |
| `europe-west3` |   |   |   | Yes |
| `northamerica-northeast1` |   |   |   | Yes |

### Custom classifier

| Region | v1.5 | v1.6 | v1.6 Pro |
|---|---|---|---|
| `Global` |   | Yes | Yes |
| Single-region locations |
| `europe-west4` | Yes |   |   |
| `us-central1` | Yes |   |   |

### Custom splitter

| Region | v1.5 | v1.6 | v1.6 Pro |
|---|---|---|---|
| `Global` |   | Yes | Yes |
| Single-region locations |
| `europe-west4` | Yes |   |   |
| `us-central1` | Yes |   |   |

### Form Parser

| Region | v1.0 | v2.0 | v2.1 |
|---|---|---|---|
| `us` | Yes | Yes | Yes |
| `eu` | Yes | Yes | Yes |
| Single-region locations |
| `asia-south1` | Yes | Yes | Yes |
| `asia-southeast1` | Yes | Yes | Yes |
| `australia-southeast1` | Yes | Yes | Yes |
| `europe-west2` | Yes | Yes | Yes |
| `europe-west3` | Yes | Yes | Yes |
| `northamerica-northeast1` | Yes | Yes | Yes |

### Layout Parser

| Region | v1.0 | v1.5 | v1.5 Pro | v1.6 | v1.6 Pro |
|---|---|---|---|---|---|
| `Global` |   |   |   | Yes | Yes |
| `us` | Yes |   |   |   |   |
| `eu` | Yes |   |   |   |   |
| Single-region locations |
| `europe-west4` |   | Yes | Yes |   |   |
| `us-central1` |   | Yes | Yes |   |   |

For more details, see the [full list of processors](https://docs.cloud.google.com/document-ai/docs/processors-list).