1 - 250,000 items per month. $0.003 per item
250,001 - 5,000,000 items per month. $0.001 per item
5,000,000 + items per month. $0.0002 per item
There is no daily limit
Features include Categories, Concepts, Emotion, Entities, Keywords, Metadata, Relations, Semantic Roles, and Sentiment. Each feature in the call is considered a separate item.
One item is one feature with up to 10,000 characters with a maximum file size of 50kb. If the cleaned text has 11,000 characters, then it is considered four items, because the service splits calls with more than 10,000 characters into multiple items. The service only accepts the first 50kb of a file and discards the rest.
You have the ability to create a custom model through a subscription to Watson Knowledge Studio. You can then use it within your Natural Language Understanding instance.