> This page is for version v2025-04-21.
> For other versions, use one of these documentation indexes:
> - v2026-02-09 (default): https://docs.extend.ai/2026-02-09/llms.txt
> - v2025-04-21: https://docs.extend.ai/2025-04-21/llms.txt
> - v2024-12-23: https://docs.extend.ai/2024-12-23/llms.txt

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.extend.ai/llms.txt
> Use this file to discover all available pages before exploring further.
>
> ## API version
> The current API version is `2026-02-09`, served at the site root (no version prefix in URLs).
> If this page URL contains `/2025-04-21/` or `/2024-12-23/`, you are reading an older API version.
> Prefer the current docs at https://docs.extend.ai/llms.txt unless the user explicitly needs that older version.
> Do not treat older-version pages as the source of truth for new integrations.

# Extraction Light

> Changelog for the Extraction Light base processor in Extend.

Our low latency, low cost extraction processor. Faster and cheaper than Performance while still maintaining a high degree of accuracy, but struggles with more complex extraction tasks.

> **Note**
>
> This processor does not support logprobs. JSON Schema processors will have `logprobsConfidence` set to `null`. Legacy Fields Array processors will surface confidences of `0`.

## Versions

| Version | Date       | Changelog                                                                                                                                                                                                                                                                      |
| ------- | ---------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `3.5.1` | 2026-05-01 | Defaults JSON schema citations to line-level citations.                                                                                                                                                                                                                        |
| `3.5.0` | 2026-03-31 | Upgrades the default model to improve extraction accuracy and performance.                                                                                                                                                                                                     |
| `3.4.1` | 2026-03-16 | Adds support for arrays of enums to JSON schema extractors.                                                                                                                                                                                                                    |
| `3.4.0` | 2025-11-03 | Enables array `property` level citation support for JSON schema extractors as opposed to previously only supporting (by default) array `item` level citations. Simply set the `arrayCitationStrategy` to `property` in the `advancedOptions` section of the extraction config. |
| `3.3.0` | 2025-09-06 | Add support for arrays of scalars (primitive types like strings, numbers, booleans, integers).                                                                                                                                                                                 |
| `3.2.1` | 2025-07-10 | Small patch to handling of currency fields.                                                                                                                                                                                                                                    |
| `3.2.0` | 2025-07-06 | Minor foundation model version upgrade.                                                                                                                                                                                                                                        |
| `3.1.0` | 2025-05-29 | Improved citations support for most field types.                                                                                                                                                                                                                               |
| `3.0.0` | 2025-04-01 | - New foundation model with improved accuracy and performance. - A number of small improvements to the pre-processing pipeline for light processor.                                                                                                                            |
| `2.5.0` | 2024-11-08 | Adds support for nested arrays and objects in extraction fields.                                                                                                                                                                                                               |
| `2.4.0` | 2024-10-10 | Add support for an optimized `enum` field type. Significant improvements to handling documents with messy handwriting and forms.                                                                                                                                               |
| `2.3.0` | 2024-08-16 | Updates to our document pre-processing to better handle more complex document/table layouts.                                                                                                                                                                                   |
| `2.2.1` | 2024-07-18 | Patch to fix rare cases of missing page references in extraction results.                                                                                                                                                                                                      |
| `2.2.0` | 2024-07-14 | Updates to our document pre-processing to better handle checkboxes.                                                                                                                                                                                                            |
| `2.1.0` | 2024-07-01 | Updates to our document pre-processing to better handle more complex document/table layouts.                                                                                                                                                                                   |
| `2.0.0` | 2024-04-01 | Rolls out a new foundation model for the light extraction processor. Significantly more accurate, with little to no latency increase.                                                                                                                                          |
| `1.0.0` | 2023-09-01 | Initial (and now legacy) light tier extraction model.                                                                                                                                                                                                                          |