The Microsoft Azure Cognitive Services Face API offers cloud based human face recognition. Its main functionalities include face verification, similar face searching, automatic face grouping, and person identification. Currently, a free plan that limits calls to 30,000 transactions per month is available, and a paid option is available as well. The Face API uses JSON format for data exchange, and API Keys for authentication.
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The Microsoft Azure Cognitive Services Swift SDK by Vladimir Danila interacts with the API to access image analysis and character recognition services. Developers can preview the interaction with the APIs that include Computer Vision API, Emotion API, Face API, Video API, Speaker Recognition API, Speech API, Linguistic Analysis API, Web Model Analysis API, and Entity Linking API.