FineVision: Open Data Is All You Need

Luis Wiedmann; Orr Zohar; Amir Mahla; Xiaohan Wang; Rui Li; Thibaud Frere; Leandro von Werra; Aritra Roy Gosthipaty; Andrés Marafioti

arXiv · 2510.17269

FineVision: Open Data Is All You Need

Luis Wiedmann·Orr Zohar·Amir Mahla·Xiaohan Wang·Rui Li·Thibaud Frere·Leandro von Werra·Aritra Roy Gosthipaty·Andrés Marafioti

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Abstract

The advancement of vision-language models (VLMs) is hampered by a fragmented landscape of inconsistent and contaminated public datasets. We introduce FineVision, a meticulously collected, curated, and unified corpus of 24 million samples - the largest open resource of its kind. We unify more than 200 sources into 185 subsets via a semi-automated, human-in-the-loop pipeline: automation performs bulk ingestion and schema mapping, while reviewers audit mappings and spot-check outputs to verify faithful consumption of annotations, appropriate formatting and diversity, and safety; issues trigger targeted fixes and re-runs. The workflow further applies rigorous de-duplication within and across sources and decontamination against 66 public benchmarks. FineVision also encompasses agentic/GUI tasks with a unified action space; reviewers validate schemas and inspect a sample of trajectories to confirm executable fidelity. Models trained on FineVision consistently outperform those trained on existing open mixtures across a broad evaluation suite, underscoring the benefits of scale, data hygiene, and balanced automation with human oversight. We release the corpus and curation tools to accelerate data-centric VLM research.

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BibTeX RIS

Luis Wiedmann, Orr Zohar, Amir Mahla, Xiaohan Wang, Rui Li, Thibaud Frere, Leandro von Werra, Aritra Roy Gosthipaty, Andrés Marafioti. 2026-05-20. FineVision: Open Data Is All You Need. https://arxiv.org/abs/2510.17269

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