An API for human labour. Scale aims to solve the problem of software struggling with complex tasks by using actual human beings. They provide an API that lets you create tasks that will be completed accurately by one of their 'Scalers'. Current tasks include content moderation, phone surveys, transcription, e-commerce tagging, de-duplication and image annotation. Responses are typically returned within 5 minutes with a JSON payload to a callback URL you specify, and prices start at around $0.10 per request.