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Chrome Extension - LLM Voices

About Large Language Models, supported languages, and usage limits

Kim Smith avatar
Written by Kim Smith
Updated over a week ago

New to NaturalReader's personal apps are the LLM Multi-Lingual Voices. Powered by ChatGPT, these are the most advanced TTS voices in the market today.

*LLM Voices support sentence highlighting only, not word-by-word highlighting*

What is LLM?

LLM means "large language models," an advancement in AI deep learning algorithms used to create TTS voices. LLM voices are trained using very large amounts of data. The result is voices that understand text on a much deeper level than ever before.
This means that unlike previous AI voices that understand text sentence by sentence, LLM voices can understand the entire overall context of your text input. This advancement in language processing gives you the most natural intonations with human-like voices ever made.

What languages are supported by LLM Voices?

LLM Voices are multi-lingual, meaning that the same voice can speak in multiple languages. Supported languages are:

English (US), Afrikaans, Arabic, Armenian, Azerbaijani, Belarusian, Bosnian, Bulgarian, Catalan, Chinese, Croatian, Czech, Danish, Dutch, Estonian, Finnish, French, Galician, German, Greek, Hebrew, Hindi, Hungarian, Icelandic, Indonesian, Italian, Japanese, Kannada, Kazakh, Korean, Latvian, Lithuanian, Macedonian, Malay, Marathi, Maori, Nepali, Norwegian, Persian, Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Slovenian, Spanish, Swahili, Swedish, Tagalog, Tamil, Thai, Turkish, Ukrainian, Urdu, Vietnamese, and Welsh.

LLM Usage Limits

LLM Voices are considered Plus Voices and included with a Plus subscription.

Plus plans come with 500,000 characters of TTS in-app/Chrome extension listening per day using Plus Voices and unlimited listening with Premium Voices.

It also includes 1 million total characters to convert with per month to downloadable mp3 files.

Each character used with a LLM Voice will count as 2 characters towards your daily TTS and monthly mp3 conversion limits.*

Keep track of your daily TTS Usage by opening the web app at and going to Account > Daily TTS Usage. View your mp3 character count by selecting MP3 from the web app menu.

*spaces and punctuation are included in the character counter

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