Capabilities
Explore what lightning-v3.1-pro supports, then use the API section for a request tailored to this model.
Model Information
- Provider
- Smallest.ai
- Product
- Text-to-Speech
- Data Policy
- Not specified
- Region
- Global
- Input
- Text
- Output
- Audio
Playground
Try lightning-v3.1-pro by Smallest.ai. Requests use the selected workspace’s credits and API pricing.
Providers
Compare available endpoints, pricing, and context limits for lightning-v3.1-pro.
| Provider | Context | Output | Input Price | Output Price | Endpoint |
|---|---|---|---|---|---|
| Smallest.ai | Not specified | Audio | $16.575 / 1M characters | — | smallest/lightning-v3.1-pro:smallest |
Prices are catalog rates. Your workspace’s estimate and endpoint pricing determine the final charge.
Input and Output Limits
Formats and limits AudioLab enforces on each request.
| Limit | Value |
|---|---|
| Max chars | 8000 |
| Formats | wav, mp3, pcm, ulaw, alaw |
Performance
Status
Current catalog availability. Your workspace’s access is checked separately before a request runs.
A live availability check is not available right now.
Getting Started
Use your workspace API key and the exact model identifier below. Set the API URL to the endpoint shown in your workspace and keep credentials on your server.
curl "$AUDIOLAB_API_URL/v1/audio/speech" \
-H "Authorization: Bearer $AUDIOLAB_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "smallest/lightning-v3.1-pro",
"input": "Make every word count.",
"voice": "auto",
"response_format": "mp3"
}' --output speech.mp3Request Parameters
Available parameters depend on the provider and request format. The endpoint reference explains accepted values and required fields.
| Parameter | Details |
|---|---|
model | smallest/lightning-v3.1-pro — Required model identifier. |
Input and Output Limits
Formats and limits AudioLab enforces on each request.
| Limit | Value |
|---|---|
| Max chars | 8000 |
| Formats | wav, mp3, pcm, ulaw, alaw |
Similar Models
Explore more text-to-speech and compare their capabilities.
| Model | Context | Input Price | Output Price |
|---|---|---|---|
| lightning-v3.1Smallest.ai | Not specified | $14.875 / 1M characters | — |
| Sonic 3.6Cartesia | Not specified | $38.25 / 1M characters | — |
| Sonic 3.6 (2026-08-27)Cartesia | Not specified | $38.25 / 1M characters | — |
| tts-rt-v2Soniox | Not specified | $11.985 / 1M characters | — |
| Inworld TTS-2 FlashInworld AI | Not specified | $12.75 / 1M characters | — |
| audio8DeepInfra | Not specified | $4.25 / 1M characters | — |
