→ ~ networkQuality

Provides you the ability to test your Internet connection directly from the macOS menu bar

Since macOS Monterey, the OS provides a good CLI speedtest tool.
At the end of the test, a summary shows the average upload and download speeds during the tests. It also shows the number of upload and download streams used, as well as a responsiveness classification.

Your network responsiveness is shown as low, medium or high. This is a measure of the number of round trips per minute (RPM), which is the number of transactions your network can perform in one minute.

Feel free to offer me some feedback via Mastodon 🦣