ELSA's Speech Analyzer is a recently released AI-powered English tool that listens to the learner's spontaneous speech and provides them with immediate feedback on their pronunciation, fluency, grammar, and vocabulary. It also predicts what score they would obtain in major English speaking exams. The tool is available on mobile devices and via web browsers. In this paper, we give an overview of the technology that powers Speech Analyzer and show results from our research comparing Speech Analyzer's predicted IELTS test scores of 50 Youtube mock IELTS speaking tests with manually rated grades.