Note on Rio 3.5 Open (twitter.com)

The recent attention surrounding Rio 3.5 Open has led to clarifications from the development team regarding the model's origin and operational status. It is not a foundational model but rather a post-training project leveraging open base weights from established models like Alibaba's Qwen 3.5 and Nex-AGI's Nex-N2 Pro. An operational error during the publication process resulted in the premature release of an unvalidated intermediate checkpoint, which has now been removed to ensure quality. The final model will be released only after completion of necessary training and validations. This incident highlights the enthusiasm and potential for AI development in Brazil and the broader push for technological sovereignty among countries in Latin America, India, and Africa. The team emphasized the importance of recognizing contributions from various stakeholders in the open-source community and aims to foster transparent collaboration moving forward. The Rio 3.5 Open project, although still in its early stages, reflects a growing interest in building robust AI initiatives that contribute to the global landscape amidst increasing restrictions on access to cutting-edge models.