The number of words or characters that can fit in one submission can vary depending on the specific text and language used, but a rough estimate is that it corresponds to about 600-800 words or 3,500-4,000 characters.

It is important to note that the length of a text does not always correspond directly in length. For example, a long word or a complex punctuation mark may count as multiple characters. Similarly, emojis, numbers, and other non-text elements can also count as more.

Added Note: Summarize has a custom design that batches up the pasted text into smaller submissions automatically. This is why you won't reach too many limits with character amounts when summarizing compared to the other options.