> 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 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 > **Note** > > Starting at version 4.6.0, the performance processor does not support `logprobsConfidence` based confidence scores. Prefer using `ocrConfidence` and the new Review Agent based scoring system. Reach out to the Extend team if you have any questions. | Version | Date | Changelog | | | ------------ | ---------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | - | | `4.8.1` | 2026-06-16 | Improvements to line/word citation precision on arrays and improved signature extraction on Parse v2 models. | | | `4.8.0` | 2026-05-13 | Upgrades the base extraction model and improves performance for large array strategies. | | | `4.7.1` | 2026-05-01 | Defaults JSON schema citations to line-level citations. | | | `4.7.0` | 2026-04-17 | Improves performance for all large array extraction strategies, particularly for avoiding mistakes that occur from item extraction around page boundaries. | | | `4.6.3` | 2026-04-01 | Adds word-level citations for improved bounding box precision on property-level array citations. | | | `4.6.2` | 2026-04-01 | Minor model updates for select provider configurations. | | | `4.6.1` | 2026-03-16 | Adds support for arrays of enums to JSON schema extractors. | | | `4.6.0` | 2025-12-08 | Model upgrade for core reasoning + extraction step in the pipeline. This is a major performance improvement for all extraction tasks based on our internal benchmarks, but especially for the hardest extraction tasks. | | | `4.5.0` | 2025-11-16 | Adds support for two new large array strategies to more declaratively handle extracting very large arrays across very large documents: `large_array_max_context` and `large_array_overlap_context`. | | | `4.4.0` | 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. | | | `4.2.1` | 2025-10-26 | Adds support for array strategy controls and updates to default chunking behavior. Disables some advanced parsing options by default to improve latency: figure captioning and signature detection. | | | `4.3.0-beta` | 2025-09-14 | Rolls out a new foundation model in beta that outperforms all our internal benchmarks for extraction. While in beta additional changes might be made to this processor version. | | | `4.2.0` | 2025-09-06 | Add support for arrays of scalars (primitive types like strings, numbers, booleans, integers). | | | `4.1.1` | 2025-07-10 | Small patch to improve handling of some signature and currency fields. | | | `4.1.0` | 2025-05-15 | Add support for array citations and overall improvements to the consistency and reliability of citations. | | | `4.0.0` | 2025-02-10 | - New foundation model in the core extraction pipeline that leads to a big jump in performance, especially on complex array extraction. | | | `3.11.0` | 2025-04-02 | 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` | 2025-03-21 | Small patch to improve handling of some deeply nested extraction fields. | | | `3.10.0` | 2025-02-09 | 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` | 2024-11-15 | Add support for nested arrays and objects. See [here](/extraction/schema#example-with-nested-arrays-and-objects) for an example schema. | | | `3.8.0` | 2024-11-04 | Add support for nested enums in array and object fields. Make advanced multimodal enabled by default. | | | `3.7.0` | 2024-10-10 | Add support for an new, optimized `enum` field type. Updates to document pre-processing for handwritten text and dense/large tables. | | | `3.6.0` | 2024-09-16 | Add base support for advanced multimodal features, which can be enabled in the Processor Settings in Studio. | | | `3.5.0` | 2024-08-27 | Several changes to improve extraction performance, including minor model version upgrade, a new bounding box system, and model insights. | | | `3.4.0` | 2024-08-16 | Updates to our document pre-processing to better handle more complex document/table layouts. | | | `3.3.0` | 2024-07-30 | Improvements to signature extraction accuracy. | | | `3.2.1` | 2024-07-18 | Patch to fix rare cases of missing page references in extraction results. | | | `3.2.0` | 2024-07-14 | Updates to our document pre-processing to better handle checkboxes. | | | `3.1.0` | 2024-06-01 | Updates to our document pre-processing to better handle more complex document/table layouts. | | | `3.0.0` | 2024-05-14 | Promoting a new foundation model to default - it's faster and more accurate across all of our internal benchmarks for extraction. | | | `2.0.0` | 2024-04-12 | Promoting a new foundation model to default. Very minor increases in accuracy and speed. | | | `1.0.0` | 2023-08-01 | Initial (and now legacy) extraction model. | |