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In Go, the number of threads (goroutines) in a process is practically unlimited by the language itself — the limit is imposed by the operating system resources and available memory.

A goroutine is a lightweight thread managed by the Go runtime, and they can be created in the tens and hundreds of thousands without significant performance degradation.

However, system threads (OS threads), on which goroutines run, are limited by the OS resources and settings (for example, limits on the number of threads in the OS kernel).

Therefore, a Go process can have many goroutines, but the actual maximum number depends on:

• Available RAM
• OS limitations (e.g., ulimit in Linux)
• Runtime configuration (e.g., GOMAXPROCS)

Overall, for most applications, the limit on the number of goroutines is very high and does not constitute a bottleneck.