Dense 200 (bbox)

In use

Model detects and boxes every object in 200 densely annotated images (109 categories, about 91 boxes each). Box F1 at IoU thresholds.

Mistral's 'Dense 200 (bbox)' is assumed to be this Dense200 set. Eval data is bundled with other Rex-Omni eval sets.

Models scored in lab cards

Launch posts list it, from 2 labs

Qwen 3.8 Max leads with 87%

Best score per model as labs report them in their own cards. Labs pick their own settings, so these compare less cleanly than independent runs.

Bars Table

Source: Labs’ model cards

#	Model	Score	Setting	Date	Source
1	Qwen 3.8 Max	87%		Aug 2026	Lab model card
2	Mistral Large 4	42%		Oct 2026	Lab model card

All the scores we have, one dot each, so a model tested at several settings appears more than once.

Reported by the lab in its model card

Source: Labs’ model cards

Launch posts from every lab that has listed it, one tick per post. Tall colored ticks include it, and short gray ones leave it out.

Qwen

Mistral AI

Date	Launch post	Score	As the post writes it
Oct 6, 2026	Mistral Large 4	42	Grounding: Dense200 (bbox)
Aug 3, 2026	Qwen 3.8 Max	87	Dense200