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Knowledge base quotas and limits
Usage quotas
| Category | Description | Limit |
|---|---|---|
| Number of knowledge bases | The number of knowledge bases that can be created by each Alibaba Cloud account. | Unlimited. |
| Number of categories | The number of categories (parent + child) that can be created in each workspace. | 500 |
| Number of files | The number of files that can be uploaded to each workspace. | 10,000 |
| Number of data tables | The number of data tables that can be created in each workspace. | 1,000 |
File upload
Supported formats
| Knowledge bases for document search | |
|---|---|
| Supported format | Limit |
| pdf, docx, doc, wps, pptx, ppt | - Maximum 100 MB - Maximum 1,000 pages |
| txt, markdown, html | Maximum 10 MB |
| xlsx, xls | Maximum 10 MB, within 100,000 rows |
| png, jpg / jpeg, bmp, gif | - Maximum 20 MB - Short side > 15 pixels, long side < 8,192 pixels, aspect ratio < 50 |
| Knowledge bases for data query and image Q&A | |
|---|---|
| Supported format | Limit |
| xlsx, xls | - Maximum 100,000 rows - Maximum 100 columns |
Upload operations
| Category | Description | Limit |
|---|---|---|
| Number of files per import | The number of files that can be imported in a single operation in the console. ** This limit does not apply to batch imports that use an API, for which a batch size of up to 10,000 files is recommended. | 50 |
| Number of tags** | The number of tags that can be attached to a single file. | 32 |
Data processing
Segmentation
| Category | Description | Limit |
|---|---|---|
| Number of text segments | The number of text segments for a single file. | Unlimited |
| Text segment length | The number of tokens in a single text segment. | 6,000 |
Vectorization
See Text and multimodal embedding.
| Category | Description |
|---|---|
| Vector model | - For knowledge bases used for document search and data query: Supports the text-embedding-v2 model. - For knowledge bases used for image Q&A: Only the multimodal-embedding-v1 model is currently supported. |
| Vector dimensions | - text-embedding-v2: 1,536 dimensions - multimodal-embedding-v1: 1,024 dimensions ** The preceding vector dimensions cannot be changed. |
Retrieval
| Category** | Description | Limit |
|---|---|---|
| Number of retrieved text chunks | The number of text segments that can be retrieved in a single query. | 20 |