Ultramarine 1 Flash launches on API with claimed Fable 5-like performance at 60x lower cost

The team behind Ultramarine 1 Flash said on October 14 that the model was available via API, with weights planned for release two weeks later. It calls the model open-source, claims it achieves similar performance to Fable 5 while being 60x cheaper, and says a team of five post-trained it for about $300,000 all-in.