> 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.

# OCR word confidence on parse chunk and block metadata

> Parse chunk and block metadata now include minOcrConfidence and avgOcrConfidence, the per-word OCR confidence across each region.

Parse runs now include **`minOcrConfidence`** and **`avgOcrConfidence`** on **chunk** and **block** metadata — the minimum and average per-word OCR confidence across the words in that region.

Both fields are returned on every chunk and block, and are **`null`** when word-level confidence isn't produced for that region. Values are in the range **0–1**.

For word-level confidence scores, set [`returnOcr.words`](/api-reference/endpoints/parse/create-parse-run) to `true`.