gemini-3.8-flash-lite-tts

Gemini 3.8 Flash-Lite TTS is Google’s ultra-lightweight TTS large model, designed for high-concurrency text-to-speech at massive scale, ultra-low-latency real-time voice response, and cost-effective voiceover. As the speed and cost leader of the Gemini 3.8 speech-generation family, the Flash-Lite version retains the core advantages of the Gemini 3.8 generation—such as 30-second rapid voice cloning, customizable Voice Design character creation, and multilingual support—while compressing generation latency to the millisecond level and reducing overall API costs to about 60% of the flagship version. It is the gold standard for cost-effective deployment in in-app text-to-speech applications, high-frequency voice interaction agents, and batch single-voice narration rendering.

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Core Capabilities

Ultra-high throughput and ultra-low generation latency: Extremely fast first-byte audio response, supporting high-concurrency API calls, making it ideal for real-time voice agents and large-scale batch production scenarios.

Supports Voice Design and 30-second rapid cloning: Fully inherits the 3.8-generation voice ecosystem, allowing users to design custom character voices from scratch using natural-language prompts or quickly clone target voices with approximately 30 seconds of reference audio.

Covers 101 global languages and accents: Natively supports 101 major world languages and regional accents, accurately handling Chinese–English mixed speech and everyday reading tasks.

Industrial-grade, low-cost streaming export: Perfectly suited for streaming audio output, with the cost of generating one minute of audio at only about $0.009, making it highly cost-effective for enterprises scaling operations.