Municipal Model Rises: Rio3.5 Surpasses Alibaba's Qwen3.7 in Frontier AI Race

Rio de Janeiro's city government has demonstrated that frontier-class language models no longer require backing from tech giants, as its Rio3.5 outperforms Alibaba's proprietary Qwen3.7 in recent benchmarks. This development signals a fundamental shift—where proprietary approaches struggle against open, decentralized contributions—reshaping expectations about who can lead in AI capability.