I co-authored a method, which yielded state-of-the-art results in several machine learning benchmarks. However, the paper got rejected from two conferences and then from a super slow journal. With the time for improvements, it all took 3 years. The method is no longer state-of-the-art, but I'd still like to publish the article.
The question is: what's the most elegant way to write (e.g. in the abstract or contributions section) that the method was state at the moment of creating it, but it's no longer anymore? If that matters, there's an old pre-print on the arXiv, so at least there's some proof that it was SOTA.
In other words: I want to make it clear to reviewers that it was SOTA, but I can't brag about it like it's SOTA anymore.
EDIT: The previous rejection reasons were mostly connected to not being novel enough (it's an incremental work rather than a revolution, but we'll aim at less prestigious place to publish it) and some missing things like additional ablations (which are intended to be included in the journal version). We won't aim at any A* conference anymore, I just want it to make it through to a decent place, since anything that I don't publish is invisible for academia in my country. It wasn't a desk reject, we just aimed too high at first.