ElevenLabs: eleven_multilingual_sts_v2

The Eleven Multilingual v2 Speech to Speech (model identifier: eleven_multilingual_sts_v2) is a multilingual speech-to-speech model launched by ElevenLabs. Its core function is: to convert any recorded source audio into another completely identical sound, while fully retaining the emotions, intonation, and expression details of the original performance. The official description states that it can capture whispers, laughter, crying, accents, and subtle emotional cues, achieving a highly realistic and close-to-human effect.