Rio de Janeiro's "homegrown" LLM appears to be a merge of an existing model(github.com)
384 points by unrvl22 | 206 comments
GitHub issue on the Nex-N2 repo alleging Rio's Rio-3.5-Open-397B model is an element-wise merge of about 0.6 Nex-N2_pro and 0.4 Qwen3.5-397B, with no training of its own.