A purported new open-source AI model, Rio-3.5-Open-397B, launched by Rio de Janeiro's IT company IplanRIO, has been accused of being a repackaged version of existing models, specifically a mix of Alibaba's Qwen 3.5 and Nex-AGI's Nex N2 Pro. The model gained rapid popularity for its claimed 397B parameters and open-source MIT license, but faced immediate scrutiny from the AI development community. IplanRIO has since apologized, attributing the release to an operational error where they mistakenly uploaded a merged baseline version instead of their independently trained model, and plan to re-upload a properly distilled and post-trained version. AI
IMPACT Highlights the importance of transparency and proper attribution in the open-source AI community, potentially impacting trust in new model releases.
RANK_REASON This is a commentary on a model release, not a direct release from a frontier lab or a significant industry event.
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