Calculate the fitness of single amino acid substitutions on proteins, using a [zero-shot](https://doi.org/10.1101/2021.07.09.450648) [language model predictor](https://github.com/facebookresearch/esm) **WARNING:** Due to high server traffic, the tool might become slow or unresponsive. In this case, it is recommended to duplicate and clone the space in your personal HuggingFace account by clicking the top right menu.