1. A computer implemented method of recording utterances from unmanaged crowds for natural language processing, the method being implemented in an end user device having one or more physical processors programmed with computer program instructions that, when executed by the one or more physical processors, cause the end user device to perform the method, the method comprising: receiving, by the end user device, a token from a user; obtaining, by the end user device, one or more campaign configuration parameters based on the token; configuring, by the end user device, the computer program instructions based on the one or more campaign configuration parameters; obtaining, by the end user device, one or more utterances to be uttered by the user based on the token; displaying, by the end user device, the one or more utterances to be uttered by the user; generating, by the end user device, an audio recording of the one or more utterances; and causing, by the end user device, the audio recording to be provided to a remote device via a network.