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 |
Table limits for AnalyticDB for PostgreSQL (ADB-PG) vector storage | The maximum number of rows and maximum size per row for a single data table when using AnalyticDB for PostgreSQL (ADB-PG) as the vector storage. |
|
File upload
Supported formats
Knowledge bases for document search | |
|---|---|
Supported format | Limit |
pdf, docx, doc, wps, pptx, ppt |
|
txt, markdown, html | Maximum 10 MB |
xlsx, xls | Maximum 10 MB, within 100,000 rows |
png, jpg / jpeg, bmp, gif |
|
Knowledge bases for data query and image Q&A | |
|---|---|
Supported format | Limit |
xlsx, xls |
|
Table format requirements
When uploading Excel files (xlsx or xls) to a knowledge base, ensure the file meets the following format requirements so that the model can correctly parse the data.
- Merged cell headers are not supported: The model cannot correctly parse merged cell headers. Use standard single-row headers, with one independent field name per column. Do not merge cells across multiple columns.
- Do not place notes or descriptions in the Excel file: Do not write notes, remarks, or contextual descriptions in the first row of the Excel file or within the data area. Instead, add such information to the system prompt of your agent application. This prevents the model from confusing descriptive text with actual data during parsing.
- Re-upload and republish after format changes: After modifying the table format, re-upload the file to the knowledge base and republish the agent application for the changes to take effect.
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 |
|
| Vector 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 |