Rio de Janeiro's "homegrown" LLM appears to be a merge of an existing model
Analysis suggests the Rio-3.5-Open-397B model is a weighted merge of existing models rather than a novel architecture.
Community investigation into the Rio-3.5-Open-397B model indicates it is likely a merge of Nex-N2_pro and Qwen. The findings highlight ongoing challenges in verifying the provenance of open-weights models branded as original city or institutional projects.