GeminiText to speechComing soon

gemini-3.8-flash-tts

Name: gemini-3.8-flash-tts
Brand: Gemini

gemini-3.8-flash-tts is a text to speech tool from Gemini that runs in the background and returns audio. Coming soon: listed with its price, not yet open to runs.

This tool is listed but not yet available to run.

Price pending

Pricing

Price pending.

Limits

Runs: In the background
Returns: audio
Longest queue wait: 3600s
Run deadline: 1800s
Largest inline input: 1024 KB
Largest input file: 500 MB
Largest output: 4768 MB
Outputs per run: 16

Input

Same request in code

curl https://api.spiral.ai/v1/runs \
  -H "Authorization: Bearer $SPIRAL_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d '{
    "provider": "gemini",
    "model": "gemini-3.8-flash-tts",
    "input": {
      "contents": {}
    }
  }'

Field	Kind	Default	Description
`contents` required	JSON	—	The content of the current conversation with the model.
`generationConfig`	JSON	—	Configuration options for model generation and outputs.