Opera has introduced a new feature for Opera One users, allowing them to download and use large language models (LLMs) locally, making it the first major browser to offer built-in access to local AI models. This update includes support for 150 LLMs from over 50 families, such as Google's Gemma and Mistral AI's Mistral Mixtral, through the Ollama open-source framework. The development signifies a significant step forward in browser technology, emphasizing user empowerment and innovation in AI accessibility.