This week brought exciting news about AI agent startups getting lots of money from investors. Companies are building smart computer helpers that can do work by themselves.

The biggest story came from Sierra, an AI company that got $350 million dollars. This made the company worth $10 billion dollars! Sierra makes AI agents that help big businesses with customer service and other tasks.

Spanish startup Altan raised $2.5 million to build teams of AI agents. These AI helpers work together like a real team. Some act like designers, others like programmers. They can build software just by listening to what people want.

Architect AI from the UK got £3.5 million to make websites that think for themselves. These agentic websites watch what visitors do and change to match what each person needs. Two people visiting the same website might see totally different things.

Several other companies also got funding this week. Quack raised $7 million to make AI customer support helpers. Eloquent AI got $7.4 million to help banks and financial companies. Motion received $38 million for AI tools that help small businesses.

Investors are very excited about agentic AI right now. This means AI that can work on its own without humans telling it every step. Companies in Spain, the UK, South Korea, and the United States are all building these smart helpers.