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

# Extraction Performance

> Changelog for the Extraction Performance base processor in Extend.

Our highest performance (in terms of accuracy and reliability) base extraction processor. Always stays up to date with the best foundation models available across all of our benchmarks.

# Versions

| Version                                             | Date                                                   | Changelog                                                                                                                                                     |   |
| --------------------------------------------------- | ------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------- | - |
| <div style={{ whiteSpace: "nowrap" }}>`4.0.0`</div> | <div style={{ whiteSpace: "nowrap" }}>2025-02-10</div> | - New foundation model in the core extraction pipeline that leads to a big jump in performance, especially on complex array extraction.                       |   |
| `3.11.0`                                            | <div style={{ whiteSpace: "nowrap" }}>2025-04-02</div> | More robust figure parsing with better captions and improved handling of signature fields to reduce false positive rate in most key use cases.                |   |
| `3.10.1`                                            | <div style={{ whiteSpace: "nowrap" }}>2025-03-21</div> | Small patch to improve handling of some deeply nested extraction fields.                                                                                      |   |
| `3.10.0`                                            | <div style={{ whiteSpace: "nowrap" }}>2025-02-09</div> | Significantly improved figure parsing in our pre-processing to better segment out and transform sub-classes of figures (e.g. charts, logos, etc.) in markdown |   |
| `3.9.0`                                             | <div style={{ whiteSpace: "nowrap" }}>2024-11-15</div> | Add support for nested arrays and objects. See [here](/api-reference/guides/processor_configs#example-with-nested-arrays-and-objects) for an example schema.  |   |
| `3.8.0`                                             | <div style={{ whiteSpace: "nowrap" }}>2024-11-04</div> | Add support for nested enums in array and object fields. Make advanced multimodal enabled by default.                                                         |   |
| `3.7.0`                                             | <div style={{ whiteSpace: "nowrap" }}>2024-10-10</div> | Add support for an new, optimized `enum` field type. Updates to document pre-processing for handwritten text and dense/large tables.                          |   |
| `3.6.0`                                             | <div style={{ whiteSpace: "nowrap" }}>2024-09-16</div> | Add base support for advanced multimodal features, which can be enabled in the Processor Settings in Studio.                                                  |   |
| `3.5.0`                                             | <div style={{ whiteSpace: "nowrap" }}>2024-08-27</div> | Several changes to improve extraction performance, including minor model version upgrade, a new bounding box system, and model insights.                      |   |
| `3.4.0`                                             | <div style={{ whiteSpace: "nowrap" }}>2024-08-16</div> | Updates to our document pre-processing to better handle more complex document/table layouts.                                                                  |   |
| `3.3.0`                                             | <div style={{ whiteSpace: "nowrap" }}>2024-07-30</div> | Improvements to signature extraction accuracy.                                                                                                                |   |
| `3.2.0`                                             | <div style={{ whiteSpace: "nowrap" }}>2024-07-14</div> | Updates to our document pre-processing to better handle checkboxes.                                                                                           |   |
| `3.1.0`                                             | <div style={{ whiteSpace: "nowrap" }}>2024-06-01</div> | Updates to our document pre-processing to better handle more complex document/table layouts.                                                                  |   |
| `3.0.0`                                             | <div style={{ whiteSpace: "nowrap" }}>2024-05-14</div> | Promoting a new foundation model to default - it's faster and more accurate across all of our internal benchmarks for extraction.                             |   |
| `2.0.0`                                             | <div style={{ whiteSpace: "nowrap" }}>2024-04-12</div> | Promoting a new foundation model to default. Very minor increases in accuracy and speed.                                                                      |   |
| `1.0.0`                                             | <div style={{ whiteSpace: "nowrap" }}>2023-08-01</div> | Initial (and now legacy) extraction model.                                                                                                                    |   |