Photoroom

PRX Part 4: Our Data Strategy – Building a Diverse Pre-training Corpus

Photoroom's PRX team details their data strategy: assembling a diverse pre-training dataset from public and internal sources, re-captioning all images with a VLM, and storing data in Lance for curation and MDS for streaming. They emphasize breadth over aesthetics, use JPEG at quality 92, and compute text latents on the fly with Qwen3-VL.

Photoroom