StepFun: Step TTS 2
Step TTS 2 is a text to speech model from StepFun released on Mar 1, 2026. It reads text and writes audio.
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2 providers serve it, including StepFun (Global).
- Modalities
- In / out price
- n/a
- Context
- n/a
- Max output
- n/a
- Released
- Mar 1, 2026
- Knowledge cutoff
- n/a
- Tool calling
- Structured output
- Reasoning
- Prompt caching
- Open weights
- Free to use
Step TTS 2 providers
2 providers serve it, including StepFun (Global). Each host sets its own price and limits, so the cheapest one is not always the one with the longest context.
| Provider | Input /M | Output /M | Cache read /M | Context | Max output |
|---|---|---|---|---|---|
| StepFun (China) First party | n/a | n/a | – | n/a | n/a |
| StepFun (Global) | n/a | n/a | – | n/a | n/a |
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Step TTS 2 questions
Which providers serve Step TTS 2?
2 providers serve it, including StepFun (Global). Prices differ by host, so the Providers table on this page lists each one with its input and output price.
Is Step TTS 2 open source?
No. StepFun serves it through an API only, so you cannot download the weights or host it yourself.
When was Step TTS 2 released?
Mar 1, 2026.
Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 15, 2026. The summary is written from these facts.