* Definition of "official" is flexible: Some countries have multiple official languages, while others only recognize one. Some may consider regional languages to be "official" in a certain context, but not nationally.
* Continual change: Languages gain and lose official status over time due to political changes, social movements, and more.
* Different sources provide varying numbers: Estimates from different organizations can vary significantly.
However, a rough estimate would be around 100 to 150 languages recognized as official by at least one country.
It's important to remember that this is just an approximation, and the exact number can be debated.