Quantium gives you access to 15+ voices from three top TTS providers: OpenAI, Google Gemini and xAI. Each has its own vibe – from a soft audiobook narrator to an energetic ad host.
In 6 minutes, we'll cover which voice works for what, how to sample them before full generation, and what to do with long texts (>3000 characters).
1Open the Voiceover Section
In the bot: «🔊 Voiceover» → choose provider. Pricing: 1 cr. per 1000 characters for Standard, 2 cr. for Pro. A 5-minute Standard clip costs 8–12 credits.
2Listen to Voice Samples
Before picking a voice for your full text, hit «🎧 Samples.» The bot will show you a list (Onyx, Alloy, Nova, Echo, Shimmer for OpenAI; Aoede, Charon, Kore for Gemini; etc.) – tap any to hear a 10-second sample.
3Pick a Voice for Your Task
Rough guide: OpenAI Onyx — for serious audiobooks and podcasts. Nova — for ads and vlogs. Echo — a neutral announcer. Gemini Aoede — expressive for presentations. Charon — deep for drama. xAI Sage — a male talk show host.
4Long Texts
OpenAI TTS limits one voiceover to 4096 characters, Gemini to 5000, and xAI to 8000. Quantium automatically chops longer text into pieces and stitches the result together. If you hear a seam in the stitch, ask to break it down manually by paragraph and generate each as a separate request.
5Adjust Pace and Emotion
Pro models support these tags: [slow], [fast], [cheerful], [serious], [whisper]. Just drop them into your text – the model changes its intonation as it goes.
What's Next
Quantium's TTS covers 90% of your needs: video voiceovers, podcasts, audio articles for social media, and ad spots. For bloggers, it's a great way to voice a finished script without touching a mic.
Ready to try it? 20 free credits are enough for 3–5 generations.
Open @quantium_aibot →


