Rio de Janeiro's city government model Rio3.5 beats Qwen3.7 in recent benchmarks

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llucasfcosta about 3 hours ago 28 commentsRead Article on twitter.com

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Discussion (28 Comments)Read Original on HackerNews

VoidWhisperer•about 1 hour ago

https://github.com/nex-agi/Nex-N2/issues/4

Seems that they didn't make/train a new novel model, they did a mix of two existing models and then gave it an instruction to say it was 'Rio, trained by Rio AI Labs'

w4yai•about 1 hour ago

> The model is built via a merge of https://huggingface.co/nex-agi/Nex-N2-Pro and https://huggingface.co/Qwen/Qwen3.5-397B-A17B, proceeded by On-Policy Distillation from a stronger model. We detected an incorrect upload in the previous version, where the base merged version was upload instead of the final distilled model. We are sorry for the confusion and apologize profusely.

https://huggingface.co/prefeitura-rio/Rio-3.5-Open-397B/comm...

mettamage•about 3 hours ago

https://xcancel.com/ZenMagnets/status/2065796012820848699

Correct me if I'm wrong but reading through the comments of the thread this seems to be post training/fine tuning.

oceansky•about 3 hours ago

Yes. It's post training in qwen using the novel SwiReasoning framework.

hedgehog•about 2 hours ago

I hadn't seen SwiReasoning (https://swireasoning.github.io, paper and code), it looks like that works at generation time without any requirements on the model. It increases token-efficiency and accuracy, but at first skim it seems like this would be incompatible with multi-token prediction. For large reductions in token budget it could be worth it.

rafaquintanilha•about 1 hour ago

Doesn't look like it's incompatible. Someone already released a quantization using MTP: https://huggingface.co/foxipanda/Rio-3.5-Open-397B-GGUF

Kelteseth•about 3 hours ago

Thanks, Firefox and uBlock does not let me watch any X content (I guess this is a good thing)

drnick1•about 2 hours ago

Same thing here, X content and trackers are blocked by my Firefox settings. The occasional inconvenience is a small price to pay not to be profiled by X, Google, FB, Amazon, and countless other Internet parasites.

adrian_b•about 3 hours ago

> Post-trained from Qwen 3.5 397B

Model Card:

https://huggingface.co/prefeitura-rio/Rio-3.5-Open-397B

Aurornis•about 2 hours ago

A city government funding a fine-tune of a model is interesting.

As for the benchmarks: If you spend any time playing with fine tunes of published models you know that benchmarks are gamed so much that they're a useless indicator of performance for models from small teams. It's too easy to fine tune a model to perform well on the benchmarks, release it, put a line on your resume saying you released a model that beat the major labs on benchmarks, and then try to use that to jump into a new job. The temptation is high.

There are a lot of fringe models and fine tunes that claim to have better performance on some benchmark. Then you try to use them and find they're often worse at general tasks than the base model.

I would wait and see if these results hold across other benchmarks. It's cool that the city is doing something with AI, but this is something where extraordinary claims require extraordinary evidence. I doubt a small, previously unknown team has unlocked something secret that the team who made Qwen couldn't figure out. It's more likely it was fine tuned for a specific outcome (possibly these benchmarks) and performance in other areas was reduced as a consequence.

marcosdumay•about 1 hour ago

> A city government funding a fine-tune of a model is interesting.

Looks like it's an IT services government-owned company.

Most likely, they saw some business opportunity on selling it around for cities.

embedding-shape•about 1 hour ago

Indeed, this is all very true, I'd say it's true for the larger teams too, the entire ecosystem is so gamed by now that if you don't have your own private benchmarks with private test cases you haven't shared publicly, it's almost impossible to get a fair picture how well a model works, unless you actually sit down and use it.

HeliumHydride•about 3 hours ago

https://www.reddit.com/r/LocalLLaMA/comments/1u4fzg1/new_mod... https://x.com/SemiAnalysis_/status/2065894494935933191

arjie•about 2 hours ago

Benchmaxxing is the new “have a crypto trading strategy”. No one is impressed by it except non practitioners.

hmokiguess•about 2 hours ago

Never let them know your next move

cuzezzzbbfofai•about 3 hours ago

We should trust a government to produce great quality AI models.

atoav•about 2 hours ago

A government ideally is a representation of the democratically chosen will of the people. If it is not, work towards making it so. IMO wherever someone says "the government" we should mentally substitute "we all, collectively".

But a specific type of person appears to labour under the illusion that somehow we can get by without we all collectively steering our direction and choosing people who do what needs to be done without commercial interest. Their idea is that instead of choosing people who do it, we just make them compete for who can squeeze the most profit out of dealing with a problem and "somehow" that leads to a better result. When you press them for the details on that part of the mechanism, you will usually get crickets.

cassianoleal•about 2 hours ago

Thank you, that's also one of my peeves.

Interestingly, the people who try to separate themselves from "the government" also seem to be the kind of people who want to "spread our model of democracy to the rest of the world".

How they can even reconcile being such a great democracy that the world needs to ~copy~ be force-fed with having an adversary government I don't know. The cognitive dissonance is so great that it's hard to fathom.

hgoel•about 2 hours ago

It's all such a self-defeating ideology, they think the government isn't doing a good enough job, so they lobby to make it impossible for them to do a good job and then pretend that it proves their point.

latency-guy2•44 minutes ago

"we all" is wrong, always.

You do not agree with me. You can't claim to have my interests or my will if you are against it.

naasking•about 2 hours ago

> IMO wherever someone says "the government" we should mentally substitute "we all, collectively".

No, we should substitute "unaccountable bureaucrats". The people who enter and leave power from elections are not the source of the daily frustrations people have with government, it's the rest.

airstrike•about 2 hours ago

how do you think that alleged amorphous mass of unaccountable bureaucrats got their jobs?

atoav•about 2 hours ago

If this is in fact an issue where you life, then you should consider stopping to elect politicians that allow bureaucrats to be unaccountable. Or stop believing politicians who rave on about how bureaucrats are unaccountable while they themselves have the power to shape systems where that would not be the case.

blahblaher•about 2 hours ago

yes, let's instead trust a bunch of billionaires, that "for sure" have your and all of our interests at heart. And no, the "invisible hand" does not exist, it's the Epstein class hand, you just don't see it

ramon156•about 3 hours ago

Every day I'm reminded why I don't spend time on twitter. What use does it have to claim "X is better than Y in benchmark Z, disagreeing with that means disagreeing with me"

Information is power, dick measurements are not.

itsthecourier•about 2 hours ago

my length is a valid data point for the sake of science

reed1234•about 2 hours ago

No, I love twitter— and you are wrong.