alt Hacker NewsThe municipality of Rio de Janeiro (via its IT company IplanRIO) released Rio-3.5-Open-397B, presented as a homegrown Qwen3.5 fine-tune that beats comparable open models on benchmarks. The linked issue argues it's actually a weighted merge of ~60% Nex-N2 Pro + ~40% Qwen3.5-397B-A17B - Nex-N2 having been released about a week earlier.
Replies
Lucasoato • today at 5:14 PM
So the problem isn’t in the missing attribution to Qwen, but with the fact that they didn’t mention Nex-N2 Pro right?
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clear-octopus • today at 5:06 PM
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I didn't know model merging like that was possible. (Obviously possible from a pure software standpoint but I'm surprised it's effective)