TTS 1 API
OpenAI's text-to-speech model. Call it on 666 AI with the same API key as every other model. Pay as you go; prices follow the upstream in real time and this page updates hourly.
| Vendor | OpenAI |
| Type | text-to-speech |
| Price | $22.27 per 1M characters |
| Live test | Passed our live test in the last 7 days · 2 supply routes, automatic failover |
| Latency (short request) | Median ~3s (20+ calls in the last 7 days) |
| Model ID (use this in your request) | tts-1 |
How to call TTS 1
The API is OpenAI-compatible. Replace YOUR-ENDPOINT with the endpoint shown on your API Key page after you sign up, and YOUR-KEY with your key.
curl https://YOUR-ENDPOINT/v1/audio/speech \
-H "Authorization: Bearer YOUR-KEY" \
-H "Content-Type: application/json" \
-d '{"model": "tts-1", "input": "Hello from 666 AI", "voice": "alloy"}' \
--output speech.mp3from openai import OpenAI
client = OpenAI(base_url="https://YOUR-ENDPOINT/v1", api_key="YOUR-KEY")
r = client.audio.speech.create(model="tts-1", voice="alloy", input="Hello from 666 AI")
r.write_to_file("speech.mp3")Similar models — price comparison
| Model | Price |
|---|---|
| S2 Pro | $20.25 per 1M characters |
| S2.1 Pro | $20.25 per 1M characters |
| S2.1 Pro Free | $20.25 per 1M characters |
| Grok Voice TTS 1.0 | $20.25 per 1M characters |
| TTS 1 1106 | $22.27 per 1M characters |
| TTS 1 Hd | $44.55 per 1M characters |
More models from OpenAI
| Model | Price |
|---|---|
| GPT 5.1 | $1.52 per 1M input tokens · $12.15 per 1M output tokens |
| GPT 5.4 | $3.04 per 1M input tokens · $18.23 per 1M output tokens |
| GPT 5.5 | $6.08 per 1M input tokens · $36.45 per 1M output tokens |
| GPT 5.6 Luna | $0.243 per 1M input tokens · $1.46 per 1M output tokens |
| GPT 5.6 Sol | $4.86 per 1M input tokens · $24.3 per 1M output tokens |
| GPT 5.6 Terra | $2.43 per 1M input tokens · $14.58 per 1M output tokens |
| GPT 6 Astra | $12.15 per 1M input tokens · $60.75 per 1M output tokens |
| GPT 6 Luna | $0.1215 per 1M input tokens · $0.6075 per 1M output tokens |
FAQ
How much does the TTS 1 API cost?
On 666 AI, TTS 1 costs $22.27 per 1M characters. You pay only for what you use — no monthly fee. Prices follow the upstream in real time; this page updates every hour.
Can I use the official OpenAI SDK?
Yes. The API is OpenAI-compatible: in the OpenAI Python or Node.js SDK just change base_url and api_key, and set model to tts-1.
How do I pay?
Bank card (including Google Pay / Apple Pay), USDT / ETH, or bank wire. Top up once and usage is deducted as you go.