DeepSeek shipped a V4 vision API the same week evaluation research shifted toward whether models hold up in practice.
DeepSeek released the V4-Flash-Vision-Exp multimodal API, with its own docs and a Hacker News thread landing the same day. Of the five articles behind this event, one is official, one community, and three academic — a single vendor post carries the announcement side.
The announcement side is thin; the research side is not. The three papers cover rule grounding for financial compliance, knowledge-grounded domain evaluation, and whether agent memory tracks evolving state — all questions about durability rather than capability. The shift in what gets measured reads as the more durable signal here. Note: no direct link between those papers and DeepSeek is confirmed.
Whether the vision API moves from experimental release to GA and real adoption, and whether these evaluation angles show up in vendors' own reported numbers.