Open TTS Leaderboard: Scalable Evaluation for Multilingual Text-to-Speech and Voice Cloning

Key points

• The pace of open-source text-to-speech (TTS) model releases has been incredible.1
• To this end, several arena-based leaderboards have established themselves as useful reference points for the community:1
• This may partly explain why open-source models are underrepresented on arena-style leaderboards: as of Sep 30, 2026, only 16 of the 92 models on Artificial Analysis are open-weights, with a similar skew on Voice Arena.1
• Intelligibility: word/character error rate (WER and CER) between the prompt and the generated audio's transcript, using Qwen3 ASR (top ranking open-source model on the Open ASR Leaderboard).1

Sources (1)

• [1]Open TTS Leaderboard: Scalable Evaluation for Multilingual Text-to-Speech and Voice Cloning
  Hugging Face Blog · Sep 30, 12:00 AM

  TLDR 👉 new TTS leaderboard focused on open-source and multilingual

  The pace of open-source text-to-speech (TTS) model releases has been incredible.

Extractive summary: sentences quoted from the sources.