> ## 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.

# Splitting Performance

> Changelog for the Splitting Performance base processor in Extend.

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

# Versions

| Version | Date       | Changelog                                                                                                                                                                                                        |
| ------- | ---------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `1.6.0` | 2026-03-30 | Minor model version upgrade for increased performance on complex split cases and better rule adherence.                                                                                                          |
| `1.5.0` | 2026-01-26 | Introduces a new splitter engine that provides superior latency and slight performance improvements across all document sizes.                                                                                   |
| `1.4.0` | 2025-12-15 | Updates to the splitting method to increase accuracy, speed and reliability with the new models rolled out in version 1.3.0.                                                                                     |
| `1.3.0` | 2025-12-15 | Model upgrade for core reasoning and splitting step in the pipeline. New hybrid model approach for large document splitting.                                                                                     |
| `1.2.0` | 2025-06-06 | Add support for page overlap detection as an advanced option. Small performance improvements to split identifier generation and type detection for splitters with complex rules.                                 |
| `1.1.0` | 2025-04-17 | Promoting a new, higher performing foundation model on splitter evals to default. Improvements to the "High Precision" splitting method, particularly for documents that might have a lot of small subdocuments. |
| `1.0.0` | 2024-07-01 | Initial splitter release.                                                                                                                                                                                        |

> Ship your document processing with Extend. Get started with our APIs, SDKs, and guides.