EventAI Models
2 days ago
Rio 3.5 model controversy: Nex proves it was a weight merge
Rio 3.5, a 397B-parameter model released by Rio de Janeiro's IplanRIO, claimed to beat Qwen 3.7 Plus but was proven to be a 0.6 Nex / 0.4 Qwen weight merge. Nex published a mathematical proof, leading IplanRIO to update the model card, credit Nex, and retract benchmark claims.