# Preprint reports targeted evidence agent improves document VQA

_Tuesday, August 25, 2026 at 12:00 AM EDT · Science · Latest · Tier 2 — Notable_

A preprint introduces Q-Guide, an agent that selects targeted tools to retrieve missing evidence from documents before answering visual questions. The authors report 65.0% accuracy on DocVQA2026 versus 40.0% for direct prompting, and 32.4% versus 24.4% on Manga109. They say gains appeared within two or three deliberate rounds and came from directing perception rather than adding planners, routers, or multiple agents.

## Sources

- [cs.AI updates on arXiv.org](https://arxiv.org/abs/2608.19739)

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Canonical: https://techandbusiness.org/newswire/ozN6Cp5w0o57sSrAzl-Whi
Retrieved: 2026-08-26T02:38:55.976Z
Publisher: Tech & Business (techandbusiness.org)