Honestly, no. I don't have a number, but:

VS Code with the extension uses Electron (heavy, because it bundles its own Chromium), extension host, and language servers which is what causes it to crash when you run multiple agents.

Abralo has a Rust backend (0% CPU) and has one shared webview (your native one).

But it's worth saying that the agents themselves use a huge amount of memory however you run them. That's why it's important not to layer additional overhead on top of each.