> 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.

# Classification Light

> Changelog for the Classification Light base processor in Extend.

Our low latency, low cost classification processor. This processor aims to be the fastest and cheapest option available, while still maintaining high precision and recall.

## Versions

| Version | Date       | Changelog                                                                                                                                    |
| ------- | ---------- | -------------------------------------------------------------------------------------------------------------------------------------------- |
| `1.3.0` | 2026-04-15 | Minor model version upgrade.                                                                                                                 |
| `1.2.0` | 2025-05-14 | Upgraded model snapshot with improved reasoning and confidence scoring. Updated document pre-processing pipeline for better text extraction. |
| `1.1.0` | 2024-08-16 | Updates to our document pre-processing to better handle more complex document/table layouts.                                                 |
| `1.0.0` | 2024-05-14 | Initial light tier classification processor and model.                                                                                       |