Why model flexibility matters in voice

Recent developments in the Humanness Index™, a benchmark for evaluating how human-like voice models sound, highlight the rapid advancements in synthetic voice technology. Two new models, Speechify's Simba 3.2 and Fish Audio's S2.1-Pro, have recently topped the leaderboard, with Simba 3.2 achieving a score of 99, nearly indistinguishable from a human voice. These advancements underscore the importance of using flexible voice platforms that allow for swift updates to leverage the most advanced models available. This fast-paced innovation means that models that were top-ranked just a few months ago have now been surpassed, illustrating the dynamic nature of the field. The Humanness Index™ continues to evolve with thousands of votes from listeners who compare synthetic voices to real human recordings, ensuring that the benchmark remains current with the latest technological progress.

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