# A gTTS alternative with natural voices, offline

Updated 2026-10-24

gTTS is the library many Python tutorials start with: it sends text to the speech service of Google Translate and saves an MP3. It is easy and free, but it needs the internet, it is not an official API and can be rate-limited or break, and it gives you languages and accents rather than a choice of voices.

SuperClonica is a free engine that voices text on your own computer, offline, with ten stock voices, character voices from the catalog and voices trained from your own recordings. This page compares the two honestly.

## Two different setups

One borrows an online service; the other is an engine you install and keep.

- gTTS: text goes to an online service; one voice per language and accent; unofficial, so requests can be limited or fail.
- SuperClonica: the model runs locally after a one-time download of about 385 MB; nothing is sent anywhere.
- SuperClonica voices speak 31 languages; Chinese is not supported yet, while gTTS can speak Chinese.
- SuperClonica gives you many voices: stock, character and your own.

## When gTTS is fine

For a quick script with an internet connection, a language Supertonic 3 does not speak, or when the voice simply does not matter, gTTS is a reasonable choice, and SuperClonica does not replace its range of languages.

## When SuperClonica fits better

The same text, voice and seed always give the same audio, so results are reproducible.

- Your program must work offline or on a closed network.
- Your texts are private and should not leave the machine.
- You need a choice of voices, a character voice or your own trained voice.
- You voice a lot of text and do not want to hit limits of an unofficial service.

## Switch in a few lines

Install the engine with python -m pip install superclonica-cpu. Where your code creates a gTTS object and saves it, use the engine instead: after from superclonica import Superclonica and tts = Superclonica(), write audio, rate = tts.synthesize(text, voice="F1", lang="en"); tts.save("hello.wav", audio). For an MP3 like gTTS gives you, run the command-line engine with an output name ending in.mp3. Long texts are split at natural pauses and joined into one file. Before you switch, try a voice on its page with a line of 30 to 100 characters, free and without an account.

## What it costs

The engine and the ten stock voices of the model are free, and several catalog voices are free too. Other voices are bought once and stay yours. There is no per-request fee and nothing to rate-limit you: once installed, it works without the internet.

## More guides

- [How to convert text to speech offline on your computer](https://superclonica.com/en/guides/offline-text-to-speech)
- [Voice cloning: how to get a voice that sounds like a recording](https://superclonica.com/en/guides/voice-cloning)
- [The best free text-to-speech models for local use in 2026](https://superclonica.com/en/guides/best-free-tts-models)
- [Text to speech for videos, audiobooks, games and apps](https://superclonica.com/en/guides/text-to-speech-for-videos)
- [Supertonic 3 voices: where to get custom voices and how to use them](https://superclonica.com/en/guides/supertonic-3-voices)
- [Text to speech in Python: offline, free and with natural voices](https://superclonica.com/en/guides/python-text-to-speech)
- [Text to speech in Google Colab, without installing anything](https://superclonica.com/en/guides/google-colab-text-to-speech)
- [Text to speech in JavaScript and Node.js](https://superclonica.com/en/guides/javascript-text-to-speech)
- [Text to speech in C# and.NET, offline](https://superclonica.com/en/guides/csharp-text-to-speech)
- [Unity text to speech: voice lines and runtime speech](https://superclonica.com/en/guides/unity-text-to-speech)
- [Godot text to speech: voice lines and runtime speech](https://superclonica.com/en/guides/godot-text-to-speech)
- [Text to speech in PHP and WordPress, offline](https://superclonica.com/en/guides/php-text-to-speech)
- [Text to speech in Go, offline](https://superclonica.com/en/guides/go-text-to-speech)
- [Text to speech in Java, offline](https://superclonica.com/en/guides/java-text-to-speech)
- [Text to speech in Rust, offline](https://superclonica.com/en/guides/rust-text-to-speech)
- [Self-hosted text-to-speech API in Docker](https://superclonica.com/en/guides/text-to-speech-api-docker)
- [Text to speech for local LLMs and chatbots](https://superclonica.com/en/guides/local-llm-text-to-speech)
- [Bulk text to speech from a spreadsheet](https://superclonica.com/en/guides/bulk-text-to-speech)
- [n8n text to speech with a self-hosted voice](https://superclonica.com/en/guides/n8n-text-to-speech)
- [Text to speech in character voices: voice any line as your favourite character](https://superclonica.com/en/guides/character-voice-generator)
- [Free unlimited text to speech without sign-up: run it on your own computer](https://superclonica.com/en/guides/free-unlimited-text-to-speech)
- [Narrator voice generator: narration for videos, audiobooks and podcasts](https://superclonica.com/en/guides/narrator-voice-generator)
- [Child voice text to speech: kid and teenager AI voices](https://superclonica.com/en/guides/child-voice-text-to-speech)
- [Anime voice generator: text to speech in anime character voices](https://superclonica.com/en/guides/anime-voice-generator)
- [Manga and manhwa dub voices with AI](https://superclonica.com/en/guides/manga-dub-voices)
- [Text to speech voice for VTubers](https://superclonica.com/en/guides/vtuber-text-to-speech)
- [Levi Ackerman TTS: make him say anything](https://superclonica.com/en/guides/levi-ackerman-voice)
- [Light Yagami TTS: an inner monologue in his voice](https://superclonica.com/en/guides/light-yagami-voice)
- [Rei Ayanami TTS: a quiet voice for your lines](https://superclonica.com/en/guides/rei-ayanami-voice)
- [Text to speech in 31 languages: one voice for every language](https://superclonica.com/en/guides/text-to-speech-languages)
- [Female voice text to speech: natural AI female voices](https://superclonica.com/en/guides/female-voice-text-to-speech)
- [Male voice text to speech: deep and natural AI male voices](https://superclonica.com/en/guides/male-voice-text-to-speech)
- [Realistic text to speech: AI voices that sound human](https://superclonica.com/en/guides/realistic-text-to-speech)
- [AI voice generator: turn text into speech with ready AI voices](https://superclonica.com/en/guides/ai-voice-generator)
- [Text to speech reader: listen to books, PDFs and articles](https://superclonica.com/en/guides/text-to-speech-reader)
- [TikTok voice generator: voices for TikTok, Shorts and Reels](https://superclonica.com/en/guides/tiktok-voice-generator)
- [CapCut text to speech: add character voices to your videos](https://superclonica.com/en/guides/capcut-text-to-speech)
- [Dota 2 hero voices: make any hero say your line](https://superclonica.com/en/guides/dota-2-voice-generator)
- [Cartoon voice generator: make a cartoon character say your text](https://superclonica.com/en/guides/cartoon-voice-generator)
- [Scratch voices for animatics and storyboards](https://superclonica.com/en/guides/animatic-scratch-voice)
- [Jarvis voice generator: your text in a Jarvis-style AI voice](https://superclonica.com/en/guides/jarvis-voice-generator)
- [Darth Vader voice generator: Star Wars voices for your text](https://superclonica.com/en/guides/darth-vader-voice-generator)
- [Train your own TTS voice on your NVIDIA GPU](https://superclonica.com/en/guides/train-tts-voice)
- [Emotional text to speech: how to make an AI voice sound expressive](https://superclonica.com/en/guides/emotional-text-to-speech)
- [Hindi text to speech: AI voices that read Hindi](https://superclonica.com/en/guides/hindi-text-to-speech)
- [Spanish text to speech: AI voices that read Spanish](https://superclonica.com/en/guides/spanish-text-to-speech)
- [Japanese text to speech: AI voices that read Japanese](https://superclonica.com/en/guides/japanese-text-to-speech)
- [A VOICEVOX alternative for multilingual videos](https://superclonica.com/en/guides/voicevox-alternative)
- [Russian text to speech with voices recorded in Russian](https://superclonica.com/en/guides/russian-text-to-speech)
- [Portuguese text to speech: AI voices that read Portuguese](https://superclonica.com/en/guides/portuguese-text-to-speech)
- [German text to speech: AI voices that read German](https://superclonica.com/en/guides/german-text-to-speech)
- [French text to speech: AI voices that read French](https://superclonica.com/en/guides/french-text-to-speech)
- [Korean text to speech: AI voices that read Korean](https://superclonica.com/en/guides/korean-text-to-speech)
- [English text to speech: AI voices that read English](https://superclonica.com/en/guides/english-text-to-speech)
- [Arabic text to speech: AI voices that read Arabic](https://superclonica.com/en/guides/arabic-text-to-speech)
- [Geralt voice generator: Witcher voices for your text](https://superclonica.com/en/guides/witcher-voice-generator)
- [GTA 5 voice generator: Trevor, Franklin and Lester say your text](https://superclonica.com/en/guides/gta-5-voice-generator)
- [Police radio dispatch voice for roleplay](https://superclonica.com/en/guides/police-radio-dispatch-voice)
- [How to make an audiobook with an AI voice](https://superclonica.com/en/guides/audiobook-ai-voice)
- [Text to speech for game development: NPC voices without a studio](https://superclonica.com/en/guides/text-to-speech-for-games)
- [Italian text to speech: AI voices that read Italian](https://superclonica.com/en/guides/italian-text-to-speech)
- [Polish text to speech: AI voices that read Polish](https://superclonica.com/en/guides/polish-text-to-speech)
- [Turkish text to speech: AI voices that read Turkish](https://superclonica.com/en/guides/turkish-text-to-speech)
- [Ukrainian text to speech: AI voices that read Ukrainian](https://superclonica.com/en/guides/ukrainian-text-to-speech)
- [Vietnamese text to speech: AI voices that read Vietnamese](https://superclonica.com/en/guides/vietnamese-text-to-speech)
- [Indonesian text to speech: AI voices that read Indonesian](https://superclonica.com/en/guides/indonesian-text-to-speech)
- [Meme voice generator: funny voices for your memes](https://superclonica.com/en/guides/meme-voice-generator)
- [Italian brainrot voice generator for memes](https://superclonica.com/en/guides/italian-brainrot-voice)
- [Discord text to speech with custom AI voices](https://superclonica.com/en/guides/discord-text-to-speech)
- [Telegram bot voice messages with AI voices](https://superclonica.com/en/guides/telegram-bot-voice-messages)
- [VHS voice-over dub: the 90s one-voice translation style](https://superclonica.com/en/guides/vhs-voice-over-dub)
- [Stream alert voices: character voices for follows, subs and donations](https://superclonica.com/en/guides/stream-alert-voices)
- [Twitch chat TTS with character voices](https://superclonica.com/en/guides/twitch-chat-tts)
- [Smash Bros. announcer voice for streams and memes](https://superclonica.com/en/guides/smash-bros-announcer-voice)
- [Dutch text to speech: AI voices that read Dutch](https://superclonica.com/en/guides/dutch-text-to-speech)
- [Swedish text to speech: AI voices that read Swedish](https://superclonica.com/en/guides/swedish-text-to-speech)
- [Czech text to speech: AI voices that read Czech](https://superclonica.com/en/guides/czech-text-to-speech)
- [Greek text to speech: AI voices that read Greek](https://superclonica.com/en/guides/greek-text-to-speech)
- [Romanian text to speech: AI voices that read Romanian](https://superclonica.com/en/guides/romanian-text-to-speech)
- [Hungarian text to speech: AI voices that read Hungarian](https://superclonica.com/en/guides/hungarian-text-to-speech)
- [Danish text to speech: AI voices that read Danish](https://superclonica.com/en/guides/danish-text-to-speech)
- [Finnish text to speech: AI voices that read Finnish](https://superclonica.com/en/guides/finnish-text-to-speech)
- [Bulgarian text to speech: AI voices that read Bulgarian](https://superclonica.com/en/guides/bulgarian-text-to-speech)
- [Croatian text to speech: AI voices that read Croatian](https://superclonica.com/en/guides/croatian-text-to-speech)
- [Slovak text to speech: AI voices that read Slovak](https://superclonica.com/en/guides/slovak-text-to-speech)
- [Slovenian text to speech: AI voices that read Slovenian](https://superclonica.com/en/guides/slovenian-text-to-speech)
- [Estonian text to speech: AI voices that read Estonian](https://superclonica.com/en/guides/estonian-text-to-speech)
- [Latvian text to speech: AI voices that read Latvian](https://superclonica.com/en/guides/latvian-text-to-speech)
- [Lithuanian text to speech: AI voices that read Lithuanian](https://superclonica.com/en/guides/lithuanian-text-to-speech)
- [Scary voice generator: horror, villain and demon voices for your text](https://superclonica.com/en/guides/scary-voice-generator)
- [Pennywise TTS: make the clown say anything](https://superclonica.com/en/guides/pennywise-voice-generator)
- [Cute voice text to speech: anime girl, kawaii and cartoon voices](https://superclonica.com/en/guides/cute-voice-text-to-speech)
- [Old man voice generator: grandpa, wizard and elder voices](https://superclonica.com/en/guides/old-man-voice-generator)
- [Deep voice generator: low AI voices for text to speech](https://superclonica.com/en/guides/deep-voice-generator)
- [SpongeBob text to speech: make him say anything](https://superclonica.com/en/guides/spongebob-voice-generator)
- [Batman text to speech: make him say anything](https://superclonica.com/en/guides/batman-voice-generator)
- [The Boys voice generator: Homelander and Billy Butcher](https://superclonica.com/en/guides/the-boys-voice-generator)
- [Lord of the Rings voice generator: Gollum and Saruman](https://superclonica.com/en/guides/lord-of-the-rings-voice-generator)
- [MiSide Mita voice for fan videos and memes](https://superclonica.com/en/guides/miside-mita-voice)
- [Harry Potter voice generator: Severus Snape](https://superclonica.com/en/guides/harry-potter-voice-generator)
- [Resident Evil voice generator: Leon Kennedy](https://superclonica.com/en/guides/resident-evil-voice-generator)
- [My Little Pony voice generator: Twilight Sparkle](https://superclonica.com/en/guides/my-little-pony-voice-generator)
- [Text to speech for presentations: narrate your slides](https://superclonica.com/en/guides/text-to-speech-for-presentations)
- [Rick and Morty voice generator: AI text to speech](https://superclonica.com/en/guides/rick-and-morty-voice-generator)
- [AI podcast voice: intros, ad reads and whole episodes](https://superclonica.com/en/guides/ai-podcast-voice)
- [Russian accent voice generator: English with a Russian accent](https://superclonica.com/en/guides/russian-accent-voice-generator)
- [News anchor voice generator: an AI voice that reads the news](https://superclonica.com/en/guides/news-anchor-voice-generator)
- [Bedtime story AI voice: a calm narrator for fairy tales](https://superclonica.com/en/guides/bedtime-story-ai-voice)
- [AI voice changer or text to speech: which one you need](https://superclonica.com/en/guides/voice-changer-vs-text-to-speech)
- [Linux text to speech: natural offline TTS from the terminal](https://superclonica.com/en/guides/text-to-speech-linux)
- [Windows text to speech: natural voices, offline, saved as WAV](https://superclonica.com/en/guides/text-to-speech-windows)
- [Mac text to speech: natural offline voices on macOS](https://superclonica.com/en/guides/text-to-speech-mac)
- [Voicemail greeting generator: a calm AI voice for your phone](https://superclonica.com/en/guides/voicemail-greeting-generator)
- [Announcement voice generator for PA systems](https://superclonica.com/en/guides/announcement-voice-generator)
- [Radio station ID and DJ voice generator](https://superclonica.com/en/guides/radio-station-id-voice)
- [AI voice for museum and tour audio guides](https://superclonica.com/en/guides/audio-guide-voice)
- [Audio description voice for videos](https://superclonica.com/en/guides/audio-description-voice)
- [Escape room voices for briefings, hints and countdowns](https://superclonica.com/en/guides/escape-room-voice)
- [AI voice over for ads: radio spots, video ads and promos](https://superclonica.com/en/guides/ai-voice-over-for-ads)
- [Free text to speech for commercial use: what is actually allowed](https://superclonica.com/en/guides/free-text-to-speech-commercial-use)
- [AI voice-over for product demos and software tutorials](https://superclonica.com/en/guides/product-demo-voice-over)
- [AI dubbing: the same voice in 31 languages](https://superclonica.com/en/guides/ai-dubbing-same-voice)
- [SRT to speech: turn subtitles into a voice track](https://superclonica.com/en/guides/srt-to-speech)
- [AI voice for a faceless YouTube channel](https://superclonica.com/en/guides/faceless-youtube-ai-voice)
- [Reddit story voice for TikTok and Shorts](https://superclonica.com/en/guides/reddit-story-voice)
- [True crime narrator voice for YouTube and podcasts](https://superclonica.com/en/guides/true-crime-narrator-voice)
- [Witch voice generator: sorceresses, seers and dark fairies](https://superclonica.com/en/guides/witch-voice-generator)
- [AI voice for e-learning: narrate online courses and training](https://superclonica.com/en/guides/e-learning-ai-voice)
- [Text to speech for language learning](https://superclonica.com/en/guides/text-to-speech-for-language-learning)
- [Text to speech for dyslexia and study](https://superclonica.com/en/guides/text-to-speech-for-dyslexia)
- [Dictation audio generator for teachers](https://superclonica.com/en/guides/dictation-audio-generator)
- [Anki text to speech: audio for every card](https://superclonica.com/en/guides/anki-text-to-speech)
- [Text to speech pauses and pronunciation: control the voice with text](https://superclonica.com/en/guides/text-to-speech-pauses-pronunciation)
- [Text to MP3: save text to speech as an MP3 file](https://superclonica.com/en/guides/text-to-mp3)
- [Santa voice generator: Christmas greetings in a warm old voice](https://superclonica.com/en/guides/santa-voice-generator)
- [Happy birthday voice message from a character](https://superclonica.com/en/guides/birthday-voice-message)
- [D&D narrator voice: AI voices for tabletop RPGs](https://superclonica.com/en/guides/dnd-narrator-voice)
- [AI voice acting for visual novels and Ren’Py games](https://superclonica.com/en/guides/visual-novel-ai-voice)
- [AI voices for audio drama and radio plays](https://superclonica.com/en/guides/audio-drama-ai-voices)
- [A Speechify alternative that works offline](https://superclonica.com/en/guides/speechify-alternative)
- [A NaturalReader alternative that works offline](https://superclonica.com/en/guides/naturalreader-alternative)
- [A TTSMaker alternative without limits, offline](https://superclonica.com/en/guides/ttsmaker-alternative)
- [A TTSMP3 alternative with unique voices and no length limit](https://superclonica.com/en/guides/ttsmp3-alternative)
- [A Murf AI alternative for offline voice-over](https://superclonica.com/en/guides/murf-ai-alternative)
- [A Play.ht alternative that runs offline](https://superclonica.com/en/guides/playht-alternative)
- [A FakeYou alternative: character voices that run offline](https://superclonica.com/en/guides/fakeyou-alternative)
- [An offline alternative to Google Cloud Text-to-Speech](https://superclonica.com/en/guides/google-text-to-speech-alternative)
- [An offline alternative to OpenAI text to speech](https://superclonica.com/en/guides/openai-tts-alternative)
- [An alternative to Bark and Tortoise TTS that runs on a CPU](https://superclonica.com/en/guides/bark-tortoise-tts-alternative)
- [A GPT-SoVITS alternative for 31 languages](https://superclonica.com/en/guides/gpt-sovits-alternative)
- [An alternative to Dia, Orpheus and Sesame CSM that runs on a CPU](https://superclonica.com/en/guides/dia-orpheus-csm-alternative)
- [An alternative to MeloTTS and OpenVoice in 31 languages](https://superclonica.com/en/guides/melotts-openvoice-alternative)
- [An edge-tts alternative that works offline](https://superclonica.com/en/guides/edge-tts-alternative)
- [A pyttsx3 alternative with natural voices](https://superclonica.com/en/guides/pyttsx3-alternative)
- [A Balabolka alternative with natural neural voices](https://superclonica.com/en/guides/balabolka-alternative)
- [PDF to audio: convert a PDF to MP3 with natural voices](https://superclonica.com/en/guides/pdf-to-audio)
- [EPUB to audiobook: convert an e-book to MP3](https://superclonica.com/en/guides/epub-to-audiobook)
- [Word document to audio: turn Word and Google Docs into MP3](https://superclonica.com/en/guides/word-document-to-audio)
- [Article to audio: listen versions for blogs and news sites](https://superclonica.com/en/guides/article-to-audio)
- [Meditation voice generator: calm AI voices for guided sessions](https://superclonica.com/en/guides/meditation-voice-generator)
- [AI voice cues for workouts and fitness apps](https://superclonica.com/en/guides/workout-voice-cues)

## Text to speech and comparisons

- [Text-to-speech that runs on your own computer](https://superclonica.com/en/text-to-speech)
- [Supertonic vs SuperClonica: same model, faster and cleaner](https://superclonica.com/en/compare/supertonic)
- [Fish Audio and Fish Speech vs SuperClonica](https://superclonica.com/en/compare/fish-audio)
- [OmniVoice vs SuperClonica: more languages or more speed](https://superclonica.com/en/compare/omnivoice)
- [Qwen3-TTS vs SuperClonica for local text-to-speech](https://superclonica.com/en/compare/qwen3-tts)
- [VoxCPM 2 vs SuperClonica: studio sound or CPU speed](https://superclonica.com/en/compare/voxcpm)
- [F5-TTS vs SuperClonica: zero-shot cloning or fast CPU speech](https://superclonica.com/en/compare/f5-tts)
- [An offline alternative to ElevenLabs](https://superclonica.com/en/compare/elevenlabs)
- [Kokoro TTS vs SuperClonica: two small models for local speech](https://superclonica.com/en/compare/kokoro)
- [Piper TTS vs SuperClonica: tiny devices or custom voices](https://superclonica.com/en/compare/piper)
- [Coqui XTTS-v2 vs SuperClonica: a Coqui TTS alternative](https://superclonica.com/en/compare/xtts)
- [Chatterbox TTS vs SuperClonica: instant cloning or a trained voice file](https://superclonica.com/en/compare/chatterbox)

## Frequently asked questions

### Is SuperClonica a drop-in replacement for gTTS?

Not literally: the API is different, but replacing the call usually takes a few lines.

### Does it support as many languages?

No. It speaks the 31 languages of Supertonic 3; Chinese and some other languages are not supported.

### Does it need the internet?

Only once, to download the model. After that it works offline.

### Do I need a graphics card?

No. Voicing text runs on an ordinary processor; only training a new voice needs an NVIDIA graphics card.

- [Browse voices](https://superclonica.com/en/explore)
- [Install the SuperClonica engine](https://superclonica.com/en/superclonica)

## Sources

- [Supertonic 3 model card](https://huggingface.co/supertone-oss-archive/supertonic-3)
- [SuperClonica engine on PyPI](https://pypi.org/project/superclonica-cpu/)
- [SuperClonica](https://superclonica.com/en/)
- [AI voice catalog for text to speech](https://superclonica.com/en/explore)
- [Custom voice commissions for Supertonic 3](https://superclonica.com/en/requests)
- [How it works: voices, local speech, training](https://superclonica.com/en/guide)
- [Install the faster Supertonic 3 engine](https://superclonica.com/en/superclonica)
- [About us: speech synthesis enthusiasts](https://superclonica.com/en/about)
- [Contacts, support and voice complaints](https://superclonica.com/en/contacts)
- [Privacy policy: what data we keep](https://superclonica.com/en/privacy)
- [Terms of use: rules for buyers and authors](https://superclonica.com/en/terms)
- [Text to speech](https://superclonica.com/en/text-to-speech)