Google has quietly upgraded Gemini Advanced customers to a faster and more powerful version of its LLM (Language Model).Version 1.5 Pro-002 of Gemini Pro offers improved chat optimization, better responses for math-related prompts, and faster performance.Gemini is available in four versions: Pro, Flash, Nano, and Ultra, each designed for different purposes.Google's upgrade to Gemini Pro comes as other AI companies, like ChatGPT and Microsoft, also improve their AI capabilities.