Vercel Ship 2025 - What are you most excited about?

Thanks! My vote is on Vercel Sandbox, I can allow users to directly use an llm to generate scripts and run them without the heavy checks

I was really excited about Fluid and Active CPU pricing but it turned out to be an opposite thing.

My product is an MCP hub to some extent and I have to use a lot of long living SSE connections that mostly do nothing waiting for incoming requests. It doesn’t fit well with the serverless nature of Vercel and I had to put some effort to optimize to make it work because we’re billed on Gb/hrs and every connection is alive for 10s of seconds.

I really hoped that Active CPU pricing will dramatically optimize it for us, but it turned out to be an opposite thing. Now we have to pay effectively both for Fluid and Active CPU separately because apparently those connections that sit idle are treated somehow as active and billed accordingly.

I haven’t filed the ticket yet, but we’ll do that the first thing on Monday. What supposed to be an effective cost saving measure for scenarios with long living connections turned out to be a new problem to deal with.