# TTS-1 API Pricing

As of October 10, 2026, TTS-1 costs $15.00 per 1M characters on OpenAI.

- Page: https://models.litellm.ai/models/tts-1
- Lab: OpenAI
- LiteLLM model name: `tts-1`
- Added to LiteLLM: July 2024
- Deprecation date: January 6, 2027
- Prices updated: October 10, 2026

## Pricing by provider

Token prices in USD per 1M tokens.

| Provider | Model name | Input | Output | Cache read | Per image | Per second | Context |
|---|---|---|---|---|---|---|---|
| OpenAI | `tts-1` | – | – | – | – | – | – |
| OpenAI (snapshot 1106) | `tts-1-1106` | – | – | – | – | – | – |
| Azure OpenAI | `azure/tts-1` | – | – | – | – | – | – |

## Cost examples

Narrating 500,000 characters:

- OpenAI: $7.50
- Azure OpenAI: $7.50

## Use it with LiteLLM

```python
from litellm import speech

response = speech(
    model="tts-1",
    input="Hello from LiteLLM",
    voice="alloy",
)
```

## FAQ

### How much does TTS-1 cost?

TTS-1 costs $15.00 per 1M characters on OpenAI.

### Which providers offer TTS-1?

TTS-1 is available from 2 providers through LiteLLM: OpenAI and Azure OpenAI.

### How do I call TTS-1 with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="tts-1", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/audio/speech from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

### When did LiteLLM add TTS-1?

TTS-1 was added to LiteLLM's model price file in July 2024.

### Is TTS-1 being deprecated?

OpenAI lists a deprecation date of January 6, 2027 for tts-1.

Source: LiteLLM model price file, https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json