Rio de Janeiro develops AI model surpassing DeepSeek using Alibaba's foundation

Rio de Janeiro launches AI model rivaling ChatGPT, Claude

Rio de Janeiro's municipal IT company IplanRIO unveiled Rio 3.5 Open 397B—a 397-billion-parameter model fine-tuned on Alibaba's Qwen—which outperforms DeepSeek V4 and legacy ChatGPT/Claude in benchmarks. Signals that frontier AI competitiveness no longer requires massive training budgets: optimized open-source models now viable for governments and enterprises, reshaping the development landscape.