Rio de Janeiro's IplanRIO released Rio 3.5 Open 397B, a fine-tuned Alibaba Qwen model that outscored DeepSeek V4 Pro, but weight-merge claims cloud the

Rio de Janeiro has unveiled a competitive AI model, outperforming several leading LLMs, just a day after the U.S

Rio de Janeiro released a frontier-class AI model that claimed to beat Alibaba's best. Then Nex showed up with receipts.