Google patents search system that combines local and cloud data

1. A computer-implemented method for personal data indexing and search, the method comprising: obtaining, by a computing system comprising one or more processors, a search query from a user computing device associated with a particular user; processing, by the computing system, the search query with one or more machine-learned planning models to generate one or more first application programming interface calls, wherein the one or more first programming interface calls comprise one or more first queries and instructions to interface with one or more first application-specific index datasets of a plurality of different server-side application-specific index datasets; performing, by the computing system, the one or more first application programming interface calls to obtain one or more first result sets; processing, by the computing system, the search query and the one or more first result sets with the one or more machine-learned planning models to generate one or more second application programming interface calls and to determine one or more on-device datasets to search, wherein the one or more second programming interface calls comprises one or more second queries and instructions to interface with one or more second application-specific index datasets of the plurality of different server-side application-specific index datasets; performing, by the computing system, the one or more second application programming interface calls to obtain one or more second result sets; processing, by the computing system, the search query, the one or more first result sets, and the one or more second result sets with one or more generative response models to generate one or more model-generated responses to the search query, wherein the one or more model-generated responses comprise details of the one or more first result sets and the one or more second result sets in a natural language response to one or more prompts of the search query; and transmitting, by the computing system, the one or more model-generated responses along with planning data descriptive of the one or more on-device datasets to search to the user computing device associated with the particular user.