Hi Ward,
Apologies for the delayed response. The query you posted will return multiple recognition results, one for each face. If you're only getting a single detection only a single face was found. For information on items that can impact detection such as resolution and face orientation please see the "Face Recognition" section of
https://www.sighthound.com/docs/cloud/recognition/The 5k/month free API calls has typically been enough for people to get a feel for the APIs and test against their use case before opting to jump to the Basic plan (or higher). Questions about specific special needs for evaluation or paid plans can be directed to support@ or sales@ sighthound.com.