Come on. You work for the company Cohesive, the company that build that product. Recently you wanted to hire a technical writer https://news.ycombinator.com/item?id=32897271 Now you claim "I came across this product".
I can't comment on the claim of being the fastest but when I attempted to run one of my code snippets it took a little time to produce the output as compared to Trinket.
I definitely liked the layout and user experience unlike Replit where I have to pass through a sign-up wall to access sandboxes.
I was not able to figure out if we can have a public/private sandbox.
Your HN profile lists your twitter handle. On Twitter you say you work for Cohesive, the company that built the product. This kind of marketig is not ok on Hackernews.