Mercury works very well with Plotly (here is a demo https://mercury.mljar.com/app/7 https://mercury.mljar.com/app/7). If you need to choose between Flask+Plotly

Mercury works very well with Plotly (here is a demo https://mercury.mljar.com/app/7 https://mercury.mljar.com/app/7). If you need to choose between Flask+Plotly and Mercury I would strongly recommend Mercury because of the speed of development. What do you mean by dynamic data? Do you need automatically fetch new data in time intervals? (Mercury has scheduling and auto-update built-in with 1 minute lowest time interval).