Gemini 3.1 Flash TTS, Text to Speech, input
Gemini 3.1 Flash TTS: instant, expressive speech from text.
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Gemini 3.1 Flash TTS is a text-to-speech model designed for speed and clarity. It converts any text input into lifelike spoken audio, capturing nuances in tone and pacing. Whether you need a quick voiceover for a video, an audiobook narration, or a dynamic voice for a virtual assistant, this model delivers consistent, high-quality results.
Use it when you need fast, reliable speech generation without sacrificing expressiveness. It excels at short to medium-length content and handles multiple languages and accents. Its distinctive edge is the balance between rapid generation and natural-sounding prosody, making it ideal for real-time applications and iterative creative workflows.
For best results, provide clear, well-punctuated text and specify desired emotional tone or speaking style. The model adapts to context, so descriptive prompts yield richer vocal performances.
- Narrating video tutorials and explainers
- Generating audiobook chapters
- Creating voiceovers for social media clips
- Powering interactive voice assistants
- Producing multilingual audio content
Generates speech in near real-time, perfect for rapid iteration.
Captures natural intonation, pauses, and emotional cues from text.
Produces crisp, intelligible audio even with complex vocabulary.
- Use punctuation like commas and periods to control pacing.
- Specify desired emotion or tone (e.g., cheerful, serious) in the prompt.
- Keep sentences moderate in length for best natural flow.
- Test with a short sample before generating full-length audio.
- May struggle with highly technical or unusual jargon.
- Long-form content can occasionally lose consistency in character voices.
- Background noise or overlapping speech in prompts may degrade quality.
In a deep, dramatic voice: 'In a world where shadows whisper secrets, one hero must rise. The clock is ticking. The fate of humanity rests on a single choice.'
In a warm, gentle voice: 'Once upon a time, in a cozy little cottage, lived a tiny mouse named Pip. Pip loved to explore the garden, especially when the flowers bloomed.'
In a calm, soothing voice: 'Close your eyes. Take a deep breath in, and as you exhale, feel the tension melt away. Imagine a soft light surrounding you, filling you with peace.'
A number that sets a fixed starting point for generation; same seed gives same audio.
Number of processing steps; more steps can improve quality but take longer.
Limits the set of possible speech variations; lower values make output more consistent.
Target length of the audio in seconds; model adjusts pacing to fit.
Controls randomness in speech patterns; lower values produce more predictable, steady delivery.
How closely the model follows your prompt; higher values mean stricter adherence.
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Can I use this model for commercial projects?
Yes, you can use generated audio in commercial projects, but check the platform's terms for any attribution requirements.
Does it support multiple languages?
Yes, it supports dozens of languages and regional accents.
How long can the generated audio be?
There is no strict limit, but very long texts may take longer to process.