Gradium TTS: you no longer have to choose between latency and accuracy

Gradium has released a new text-to-speech model as its default offering, emphasizing accurate real-time pronunciation of structured information such as phone numbers, email addresses, financial amounts, dates, account names, and reference codes without user-side text normalization. In its August 2026 benchmark of 500 difficult sentences across English, German, French, Spanish, and Portuguese, Gradium reports an 81.0% human-evaluated pass rate, compared with 75.1% for Cartesia Sonic 3.6 and lower scores for several other tested models, alongside a 216 ms median time to first audio and a 30 ms interquartile latency spread. The company says its production and studio paths use the same unmodified text input, aiming to avoid hidden rewriting and hallucinated content, and it has open-sourced the evaluation dataset on Hugging Face. Gradium invites users to submit additional failure cases for future evaluations, offers credits for complete reports, and says further work will target latency, naturalness, accuracy, and multilingual coverage; the model is available through its API and Studio while retaining compatibility with existing and custom voices.

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