> This page is for version v2026-02-09 (default).
> 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.

# Advanced chart extraction

> Advanced chart extraction converts figures classified as charts into structured data tables using a specialized vision model.

Advanced chart extraction is now available across all parse engines. When enabled, a specialized vision model runs on any figure classified as a chart and converts it into a structured data table — for more accurate extraction from charts, graphs, and other visualizations.

![](/_fern-img/d11b25ea0c2b5369a7ff81c67043332fcc80845383b15e44a35dbaa53742cc43.webp)