Gemini 3.1 Flash Text to Speech

Why serious creatives choose Gemini 3.1 Flash TTS

It performs the direction, not just the words

Write the direction into the script, calm here, a whisper on this line, a shout on that one, and Gemini 3.1 Flash TTS performs it, with granular control over style, pace, tone, and delivery. The note you write is the read you get.

It can carry a whole conversation

From a single script, Gemini 3.1 Flash TTS generates multi-speaker audio: two characters arguing, a podcast exchange, an interview, a dramatic scene, each voice distinct, the timing of a real conversation. Dialogue stops being one voice at a time.

It paces like a person, not a teleprompter

The rushed, even cadence that gives TTS away is not here. Gemini 3.1 Flash TTS breathes where a speaker would, lands emphasis where the sentence means it, and holds a natural rhythm from short snippets to long-form speeches.

It sounds native in every language

In every language it speaks, Gemini 3.1 Flash TTS keeps the local rhythm: stress where that language puts it, pacing the way its speakers actually talk, not an accent pasted over English cadence.

It holds up at length

From a one-line snippet to a long-form speech, the performance stays consistent, the same voice, the same energy, no drift as the read goes on.

How Gemini 3.1 Flash TTS works with invideo agents

On invideo, Gemini 3.1 Flash TTS runs inside an agentic workflow: you direct in plain language, and the agent turns that direction into the performance instructions the model follows. Here is what that looks like in practice.

Your direction becomes the performance.

Say the apology should start defensive and end sincere, and the agent writes that arc into the script as the audio direction Gemini 3.1 Flash TTS performs, line by line, shift by shift. You direct like a director; the agent handles the notation.

The agent directs the whole exchange, not one line at a time.

Because the agent holds your full script in its memory, it knows who is in the scene and who says what: it casts the voices, assigns the dialogue, and has Gemini 3.1 Flash TTS perform the full exchange in one pass, with the interplay of a real conversation rather than two reads spliced together.

Voices stay cast, scene after scene.

The voices you approve stay bound to their characters in the project’s memory, so the same speaker carries their part across every scene, and a note to one voice never touches the other.

You always stay in control.

How much the agent runs on its own is your setting, not its default: full takes delivered for review, or every direction shown before it generates. The read that ships is the one you signed off on.

Who is Gemini 3.1 Flash TTS for?

AI filmmakers and microdrama producers.

Dialogue is where audio work gets hard. Gemini 3.1 Flash TTS performs the scene as written, two characters, real interplay, and takes direction on every line. Useful whether you are directing AI filmmaking or a microdrama season.

Animators.

Every character needs a voice, and Gemini 3.1 Flash TTS provides the cast: performances directed line by line, dialogue scenes delivered as real exchanges, and a retake never further than a note.

Explainer and educator makers.

Gemini 3.1 Flash TTS narrates a full lesson the way a good teacher delivers it: emphasis where the point lands, a shift in tone when the topic turns, and pacing that holds attention to the end.