Great question, and it's something we get asked a lot. We have an open PR on our main CLI repo to add Pulumi support (https://github.com/infracost/infracost/pull/1752). This still has some way to go and is currently just using a Pulumi preview file. To get to full editor support, we'd need to be able to read raw Pulumi configuration in all the different languages and flavours it comes in. It's definitely on our radar, but it's not "simple" addition. I'd recommend following our Pulumi issue (https://github.com/infracost/infracost/issues/187) for updates on feature support.