Cognitive Services Text Analytics has a new sentiment analysis capability supporting Japanese and Simplified Chinese languages in addition to the previously announced English language model. The three sentiment analysis V3 models are now available in the following regions: Australia East, Central Canada, Central US, East Asia, East US, East US 2, North Europe, Southeast Asia, South Central US, UK South, West Europe, and West US 2.
For more information on the API and the request/response payloads, see the API documentation. For details on the models' improvements, see this announcement.