Spark TTS
spark-ttsSpark efficient TTS with disentangled control over speaker, content and style. Strong cross-lingual zero-shot performance.
- Price
- ≈ US$0.0035/run
- Input → output
- Text → Audio
- Developer
- Community
- Updated
- September 23, 2026
Playground
Try Spark TTS
No input form
No input form for this model yet
Its inputs are not documented yet. So that no run fails on a wrong input, we don't offer a form here. Pick a comparable model instead.
Examples
- Length: 0:04
Prompt
白日依山尽，黄河入海流。
Settings
- speed
- low
- mode
- voice_creation
- Length: 0:03
Prompt
白日依山尽，黄河入海流。
Settings
- speed
- low
- mode
- voice_cloning
About Spark TTS
Spark TTS is a model by Community in the Text-to-speech category. On Railwail, Spark TTS costs ≈ US$0.0035 per run.
Pricing
| Typical run (≈ 3 s on L40S) | US$0.0035 per run |
|---|---|
| GPU time (L40S) | US$0.00117 per GPU second |
- Billed by the GPU time the run actually takes. When the run starts, 3× the typical price is reserved from your balance and settled afterwards.
- 1 credit = US$0.01
Cost calculator
Price calculator
Typical according to the provider: about 3 s
Total
US$0.35
35 credits
Per run
US$0.0035 · 0.35 credits
Billed by the actual GPU time; this is an estimate.
API
No verified API example
The inputs of this model are not documented yet.
Specifications
- Model ID
spark-tts- Developer
- Community
- Category
- Text-to-speech
- Input
- Text
- Output
- Audio
- Billing
- By usage (tokens or GPU time)
- Catalog entry updated
- September 23, 2026
Tags
- spark
- tts
- voice-cloning
- open-source
Use cases
Frequently asked questions
What is Spark TTS?
Spark TTS is a model by Community in the Text-to-speech category.
How much does Spark TTS cost on Railwail?
On Railwail, Spark TTS costs ≈ US$0.0035 per run. You are charged for what each request actually uses. Usage is paid from prepaid credits; 1 credit equals US$0.01.
How fast is Spark TTS?
There are not enough measured runs of Spark TTS on Railwail yet to state a run time. It depends on the input, the settings and the load at the provider.
Is Spark TTS better than AudioLDM 2?
That depends on the task. Spark TTS (Community) and AudioLDM 2 (Haohe Liu) are both models in the Text-to-speech category. The comparison page shows their prices and specifications side by side.
Compare Spark TTS and AudioLDM 2Comparable models
All in this category- AudioLDM 2Haohe Liu
Latent-diffusion model for general-purpose text-to-audio. Generates speech, music, and sound effects with a unified prior.
- Kokoro TTS 82MCommunity
Open-weights 82M-parameter TTS. Punches above its size class on naturalness benchmarks at a fraction of the inference cost of larger models.
- OpenVoice v2Community
MyShell OpenVoice v2. Multilingual zero-shot voice cloning with accurate tone-color reproduction and style/emotion control.
All models through one API
One API key for every model on Railwail. Usage is charged from prepaid credits, 1 credit = US$0.01.