> 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.

# Parse Auto

> Changelog for the Parse Auto base model version in Extend.

Our auto parsing engine classifies difficulty and routes work per page: simple pages are parsed with the lightweight pipeline while complex pages get performance-level treatment. Billed per page by complexity (0.5–2 credits per page). Best for mixed-complexity workloads where you don't want to pick between Light and Performance per document.

## Versions

| Version | Date       | Changelog                                                                                                          |
| ------- | ---------- | ------------------------------------------------------------------------------------------------------------------ |
| `1.0.0` | 2026-08-31 | Initial release of the parse_auto engine: per-page complexity routing between the light and performance pipelines. |