# Gemini 3.8 Flash TTS

> Google's flagship text-to-speech model for studio-grade voice fidelity, expressive acting, regional accents, and stable long-form multi-speaker audio.

Agent resources: the index of everything machine-readable is https://www.ohmygpt.com/llms.txt; the integration skill (endpoints, auth, SDK and coding-tool setup) is https://www.ohmygpt.com/skill.md.

- Model ID: `google/gemini-3.8-flash-tts`
- Status: available
- Released: 2026-09-22
- Context: 8K tokens
- Max output: 16K tokens
- Input: text; output: audio

## Prices (USD)

| Item | Price | Unit |
| --- | --- | --- |
| Input | $0.45 | per 1M tokens |
| Output | $8.10 | per 1M tokens |
| Cache read | $0.45 | per 1M tokens |
| Audio output | $8.10 | per 1M tokens |

## Providers

Without a prefix each request goes to the best-priced healthy provider. To pin one, send the model as `<provider>:google/gemini-3.8-flash-tts`.

| Provider | Pinned model ID | Location | Input | Output | Trains on your data |
| --- | --- | --- | --- | --- | --- |
| Google (Gemini) | `google:google/gemini-3.8-flash-tts` | United States | $0.45 | $8.10 | no |
| Google Vertex AI | `vertex:google/gemini-3.8-flash-tts` | Global | $0.45 | $8.10 | no |

## Endpoints

| API | Request | model |
| --- | --- | --- |
| OpenAI Chat | POST https://api.ohmygpt.com/v1/chat/completions | `google/gemini-3.8-flash-tts` |
| OpenAI Responses | POST https://api.ohmygpt.com/v1/responses | `google/gemini-3.8-flash-tts` |
| Anthropic Messages | POST https://api.ohmygpt.com/v1/messages | `google/gemini-3.8-flash-tts` |
| Google Gemini | POST https://api.ohmygpt.com/v1/models/google/gemini-3.8-flash-tts:generateContent | `google/gemini-3.8-flash-tts` |

## Example

```bash
curl https://api.ohmygpt.com/v1/models/google/gemini-3.8-flash-tts:generateContent \
  -H "x-goog-api-key: $OHMYGPT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "contents": [
      {
        "parts": [
          {
            "text": "Hello"
          }
        ]
      }
    ]
  }'
```

Web page: https://www.ohmygpt.com/models/google/gemini-3.8-flash-tts