Gemini 3.8 Flash-Lite TTS
Summary
Gemini 3.8 Flash-Lite TTS is a proprietary speech model from Google DeepMind, released on 22 Sept 2026. It accepts text and generates audio, with a 8K-token context window and up to 16K output tokens per response. As of 21 Oct 2026, the lowest listed API price is $0.50 per million input tokens and $6 per million output tokens (Vercel AI Gateway), across 1 provider we track.
Fast, cost-efficient text-to-speech model for high-volume narration and voice agent pipelines
Last verified 21 Oct 2026. Every figure on this page links to its source.
Specifications
| Developer | Google DeepMind |
|---|---|
| Release date | 22 Sept 2026 [models.dev] |
| Status | Generally available [models.dev] |
| Weights | Proprietary (API only) [models.dev] |
| Context window | 8K (8,192 tokens) [models.dev] |
| Max output | 16K tokens [models.dev] |
| Input | Text [models.dev] |
| Output | Audio [models.dev] |
| Reasoning mode | No [models.dev] |
| Tool calling | No [models.dev] |
Gemini 3.8 Flash-Lite TTS API pricing by provider
USD per million tokens. Sorted by input price.
| Provider | Input | Output | Cached input | Context | Source |
|---|---|---|---|---|---|
| Vercel AI Gateway google/gemini-3.8-flash-lite-tts | $0.50 | $6 | – | 8K | models.dev, 21 Oct 2026 |
Frequently asked questions
What is the context window of Gemini 3.8 Flash-Lite TTS?
Gemini 3.8 Flash-Lite TTS has a context window of 8,192 tokens (8K) and can generate up to 16,384 tokens in a single response, according to models.dev.
How much does the Gemini 3.8 Flash-Lite TTS API cost?
Gemini 3.8 Flash-Lite TTS is listed from $0.50 per million input tokens and $6 per million output tokens (Vercel AI Gateway). Prices last verified 21 Oct 2026.
Is Gemini 3.8 Flash-Lite TTS open source?
No. Gemini 3.8 Flash-Lite TTS is a proprietary model; Google DeepMind has not released its weights. It is available through APIs including Vercel AI Gateway.
When was Gemini 3.8 Flash-Lite TTS released?
Google DeepMind released Gemini 3.8 Flash-Lite TTS on 22 Sept 2026, according to models.dev.
Change history
- Context window changed from none to 8K
- Max output changed from none to 16K
- Added to the directory
- Now listed on Vercel AI Gateway