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GeminiText to speechAvailable now

gemini-2.5-pro-preview-tts

gemini-2.5-pro-preview-tts is a text to speech tool from Gemini that runs in the background and returns audio. Pay as you go from $0.0000013 per token, with one API key.

Try itfrom $0.0000013 / token

Pricing

Up to $0.42601 per run at the default inputs. $1.30 per 1M text input tokens, $26.00 per 1M audio output tokens. The final charge comes from usage.

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

FieldKindDefaultDescription
contents requiredJSON—The content of the current conversation with the model.
generationConfigJSON—Configuration options for model generation and outputs.

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-2.5-pro-preview-tts",
    "input": {
      "contents": {}
    }
  }'