Tasks and inputs
Gemini 3.8 Flash-Lite TTS is listed for Text-to-speech. It accepts text and produces audio. Use the publisher’s input format and preprocessing for your chosen deployment.
SyncDev model directory · Profile updated Oct 7, 2026
Gemini 3.8 Flash-Lite TTS converts supplied text into speech through the Gemini API. It is a candidate for read-aloud features and repeated single-speaker audio jobs.
The specification score summarizes recorded features and limits. It is not a benchmark result.
Recorded modality support shows what this model can accept and produce. An undocumented modality is shown as unknown rather than assumed to be unsupported.
Accepts
Produces
Gemini 3.8 Flash-Lite TTS converts supplied text into speech through the Gemini API. It is a candidate for read-aloud features and repeated single-speaker audio jobs.
Place sustained delivery instructions and speaker labels in speech_metadata. The text input is the transcript to speak; mixing a direction into that text can make the direction audible. Test numbers, names and punctuation from your actual content before processing a large collection.
Unary requests return WAV by default. Older pipelines that assumed headerless PCM need to inspect their audio handling and avoid wrapping an existing WAV file in a second header. Select another documented format explicitly if the application requires it.
Evaluate it alongside Gemini 3.8 Flash TTS using the same transcript and voice settings. Listen for missed words, pronunciation errors, awkward pauses and inconsistent delivery. Include the complete audio pipeline when measuring latency, and verify that files play in the destination application.
The recorded limits are 8,192 input tokens and 16,384 output tokens. This is audio generation from text; Live API, function calling and structured outputs are unsupported. It is not a bidirectional voice-session model. Browse speech-generation models for other deployment options.
Compare the model on the work you need to complete.
Gemini 3.8 Flash-Lite TTS is listed for Text-to-speech. It accepts text and produces audio. Use the publisher’s input format and preprocessing for your chosen deployment.
Documented limits: 8.19K context and 16.38K maximum output. Compare pronunciation, voice consistency and time to the first playable audio. Check the service’s billing unit for the actual script.
Use the model identifier and account requirements for the selected API route. Confirm its request limits and output format with one complete task before connecting a larger workflow.
These records share a directory category. Check the source card, output type and deployment requirements before treating a model as a replacement.
Microsoft
MAI-Voice-2.1 generates expressive multilingual speech from text through Azure Speech, with voice selection and supported custom-voice workflows.
Microsoft
MAI-Voice-2.1-Flash generates expressive multilingual speech from text through Azure Speech, with voice selection and supported custom-voice workflows.
Gemini 3.8 Flash TTS turns a supplied text transcript into audio. It is a speech-generation model for narration and dialogue, with speaker and style information supplied separately from the words to be spoken.
xAI
Grok Voice TTS 1.0 from xAI: Convert text into spoken audio with a single API call. The API supports a rich set of expressive voices, inline speech tags for fine-grained delivery control, and output formats from high-fidelity MP3 to telephony-optimized μ-law.
OpenAI
GPT-Realtime-2.1 from OpenAI: Realtime speech-to-speech model with configurable reasoning, tool use, and robust voice-agent behavior.
Gemini 3.5 Live Translate Preview from Google: Low-latency audio-to-audio model for real-time speech translation across 70+ languages.