Cities around the world are getting smarter by using AI agents to solve old problems with planning and building. These computer helpers are changing how cities grow and work.

China is leading the way with AI city planning. In Beijing, researchers created a smart system that uses deep learning and satellite pictures to help plan the city better. The AI looks at buildings from space and figures out which ones are empty or need to be torn down. Between 2018 and 2019, Beijing's building area actually got smaller by 76.24 square kilometers. The AI system then suggested the best ways to use that empty land.

The smart planning tool recommended turning 67.07 square kilometers into forests and 20.51 square kilometers into farmland. For city areas, it suggested building more public services, industry buildings, and homes. The AI was very accurate - it got building detection right 95 percent of the time in 2018 and 90 percent in 2019.

This Chinese system shows how AI can help cities grow in better ways. Instead of just building more and more, cities can use AI to make smarter choices about land. The research team said their AI framework could work in other big cities like Lagos or São Paulo too.

California is also using AI to help rebuild after disasters. The city of Malibu introduced a new AI tool called Archistar to help people rebuild homes after the big fires. This AI helper checks building plans before people send them to the city government. It looks for mistakes and makes sure plans follow all the building rules.

The Archistar system started on September 30, 2025, as part of Malibu's eCheck AI Pilot program. City workers will show builders and architects how to use this tool. The goal is to make rebuilding faster and easier for families who lost their homes in the fires.

The data center boom is another big infrastructure story. These computer buildings power all the AI systems cities are starting to use. In September 2025, companies spent a record $40 billion building new data centers just for AI work. This is 30 percent more than last year.

Microsoft signed a huge $6 billion deal with a UK company called Nscale to rent AI computers. OpenAI and Nvidia announced they will build massive AI computer centers across the UK. These deals are worth billions of dollars and will create thousands of new jobs.

The CoreWeave company added another $6.5 billion to its contract with OpenAI, bringing their total deal to $22.4 billion. Microsoft also announced a new 315-acre AI campus in Wisconsin that will have hundreds of thousands of AI computer chips.

Some countries are even putting AI agents in government. Albania made history by hiring Diella, the world's first AI-powered government minister. This AI helper can answer citizen questions and help with government services any time of day or night.

Ukraine launched DiiaAI, an AI agent that helps citizens get government services online. People can ask this AI helper questions about getting documents, paying taxes, or other government needs. This makes it easier for people to get help from their government.

These changes show how AI infrastructure is becoming as important as roads and bridges. Cities need smart computer systems to work well in the future. The AI helpers can process huge amounts of information much faster than humans. This helps city planners make better decisions about where to build schools, parks, and homes.

The trend toward AI-powered city planning will likely grow even more. As more cities see how well these systems work, they will want their own AI helpers. This could make cities cleaner, safer, and better places to live for everyone.