The phrase "begin today" means to initiate an action or event on the current day. It is often used to indicate that something is starting for the first time or marking the start of a new activity. For example, you might say, "starting today, I will exercise every morning," which signifies the beginning of new exercise routine. The phrase is commonly used in both spoken and written English to convey the idea of commencing something new.

In summary, "starting today" is a versatile phrase used to mark the commencement of an action, event, or policy. Ludwig AI confirms its grammatical correctness and common usage across various contexts, predominantly in news and media, academic writing, and formal business communications. While alternatives like "beginning today" and "as of today" exist, understanding the specific nuances of each helps in choosing the most appropriate phrase for the intended message. Using "starting today" effectively requires careful attention to the timeline and scope of the action being initiated.