QuantFinance is a GPT that is specialized in the subject of Quantitative Finance. Developed by Nicolo Ceneda, this tool leverages the capabilities of ChatGPT to cater to queries related to the field of Quantitative Finance. This tool goes beyond providing basic responses and can handle a range of operations, from writing formulae to simulating stock prices, and answering intricate questions about financial instruments. For instance, it can write the Black-Scholes formula, plot simulated stock prices, and explain financial concepts such as zero coupon bonds and call options. To use this tool, a user would need a ChatGPT Plus subscription. Once logged in, the tool provides a welcoming environment for finance-related queries with a friendly welcome message. Unique to this tool are the 'Prompt Starters' provided which guide users in asking relevant and precise questions. This characteristic makes it an exquisitely interactive tool that provides comprehensive, focused, and precise responses to intricate questions on Quantitative Finance. Note that this tool is continually evolving and its capabilities might change over time. Overall, this GPT provides a platform for querying, learning and understanding complex financial concepts.