Step TTS 2
Step TTS 2 is StepFun's text to speech model. A text-to-speech synthesis model from StepFun delivering natural-sounding voice generation with expressive prosody.
| Specifications | |
|---|---|
step-tts-2 | |
| Text to Speech | |
| Active | |
| StepFun | |
| Text | |
| Audio | |
| Benchmarks | |
|---|---|
| Elo Rating | 1159#96 |
Capabilities
Input1/5
Text✓
Image·
Audio·
Video·
PDF·
Output1/5
Text·
Image·
Audio✓
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| Step TTS 2 | — | — | — | — | Current |
| Inworld Realtime TTS 2 | — | — | — | — | Available |
| StyleTTS 2 | — | — | — | — | Available |
| TTS HD 2.5 | — | — | — | — | Available |
| TTS 1 | — | $15.00 | — | Available | |
| TTS 1 HD | — | $30.00 | — | Available | |
| Inworld Realtime TTS 1.5 Max | — | — | — | — | Available |
| Inworld Realtime TTS 1.5 Mini | — | — | — | — | Available |
| Inworld TTS 1 Max | — | — | — | — | Available |
| Inworld TTS 1.5 Max | — | — | — | — | Available |
| Inworld TTS 1.5 Mini | — | — | — | — | Available |