Gemini 3.1 Flash TTS Preview

Gemini 3.8 Flash-Lite TTS

Fast, expressive single-speaker speech in over 100 languages with 30 voices, delivery instructions, and inline vocal events. Accepts text or one narration turn and returns WAV audio. Billed by exact spoken characters with no per-request minimum; instructions are not billed. The complete input is limited to 8,192 tokens; turn-array input also has an 8,192-byte normalized limit.

Gemini 3.8 Flash TTS

Accepts compatible input turns: one turn for narration or exactly two distinct voices for multi-turn dialogue (up to 100 turns and 8,192 normalized input bytes). Expressive narration and two-speaker dialogue with 30 voices, delivery instructions, and inline vocal events. Returns WAV audio. Billed by exact spoken characters with no per-request minimum; instructions are not billed. The complete input is limited to 8,192 tokens.

Gemini 2.5 Flash Preview TTS

Google Gemini native TTS. Single and multi-speaker support via prompt.

Qwen Audio 3.1 TTS Flash

Speech synthesis with four multilingual voices in Singapore. Supports Japanese, Korean, French, German, Portuguese, Italian, Vietnamese, and Indonesian, plus eight Chinese dialects. Returns MP3, WAV, or PCM audio after generation completes. Billed by measured input and output tokens; character-based previews are estimates.

Qwen Audio 3.0 TTS Flash

Fast multilingual text-to-speech with a broad set of voices and explicit language control.

Gemini 2.5 Pro Preview TTS

Higher-quality Gemini TTS with controllable style and tone.