Overview
Model specifications
- Context
- 32,768 tokens
- Maximum output
- 16,384 tokens
- Architecture
- text->speech
- Tokenizer
- Gemini
- Knowledge cutoff
- Not provided
- Moderated
- No
OPENROUTER
Complete pricing
Synchronized OpenRouter rates. Token prices are shown per one million tokens.
- Input
- $1 per million text tokens
- Output
- $20 per million audio tokens
API
Model configuration
Supported voices
ZephyrPuckCharonKoreFenrirLedaOrusAoedeCallirrhoeAutonoeEnceladusIapetusUmbrielAlgiebaDespinaErinomeAlgenibRasalgethiLaomedeiaAchernarAlnilamSchedarGacruxPulcherrimaAchirdZubenelgenubiVindemiatrixSadachbiaSadaltagerSulafat
API
Quick start
Set OPENROUTER_API_KEY locally. Python requires requests; JavaScript runs in Node.js. Keep the key on the server.
Choose a supported voice. Replace YOUR_VOICE_ID if no voice is listed.
curl --fail-with-body https://openrouter.ai/api/v1/audio/speech \
-H "Authorization: Bearer $OPENROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"google/gemini-3.1-flash-tts-preview","input":"Hello!","voice":"Zephyr","response_format":"mp3"}' \
--output speech.mp3Capabilities
Input → Output
Input
text
Output
speech
API
Supported API parameters
Available providers
1 Provider
Checked: September 16, 2026
Live providers on OpenRouter
OpenRouter Provider availability, latency, throughput and routing can change continuously. Open the source page for current operational data.
- Context
- 33K
- Maximum output
- 16K