This new AI model hears your tone, senses your mood, and talks back like a real human. Siri could never. Inworld CEO Kylan Gibbs writes on a whiteboard at the AI startup's Silicon Valley headquarters Alistair Barr/Business Insider Inworld AI launched a new voice model called Realtime TTS-2. The new model analyzes vocal cues for tone and emotion, improving natural interaction. Inworld focuses on providing models to developers, avoiding app competition with its customers. Inworld AI  rolled out a new AI voice model designed to make conversations with machines feel more human by understanding not just what users say but how they say it. The Mountain View-based startup's latest system, Realtime TTS-2, analyzes vocal cues such as tone, pacing, and pitch to infer a speaker's emotional state in real time. It then dynamically adjusts its own voice and delivery to create more natural, emotionally aware interactions (TTS stands for text-to-speech, a type of voice-based AI model).…