stepaudio-2.5-tts
Model overview
stepaudio-2.5-tts
stepaudio-2.5-tts speech synthesis model.
audiospeechtext to speechvoice assistantenterprise access
Representative version
stepaudio-2.5-tts
| Company | StepFun |
|---|---|
| Release | Not disclosed |
| Release type | Model release |
| Parameters | Not disclosed |
| Architecture | Not disclosed |
| Context | 1,000 |
| Input modalities | text |
| Output modalities | audio |
| Tool use / function calling | Tool use: Not disclosed; Function calling: Not disclosed |
| Structured output / reasoning | Structured output: Not disclosed; Reasoning: Not disclosed |
| Vision / audio / video | Confirmed: Audio |
| Open weights / License | Weight status not disclosed / license not disclosed stepfun-stepaudio-2-5-tts-phase-3-5 · License source pending verification |
| Vendor API | Available StepFun audio models documentationstepfun-stepaudio-2-5-tts-phase-3-5 · 2026-07-13 |
| OpenRouter | Not separately listed on OpenRouter |
| Pricing | No reliable public source |
| Benchmark | No reliable public source |
| Public signals | No reliable public source |
| Use cases | voice assistant / enterprise API / audio and speech / speech |
| Claim evidence | Release event / Model specificationsStepFun audio models documentationstepaudio-2.5-tts · stepaudio-2.5-tts · stepaudio-2.5-tts |
OpenRouter
Pricing / context / availability
| OpenRouter | Not separately listed on OpenRouter |
|---|---|
| OpenRouter listing | Not separately listed in the current OpenRouter public list |
| Mapped version | stepaudio-2.5-tts stepfun-stepaudio-2-5-tts-phase-3-5 |
| Pricing | No reliable public source |
| Context | 1000 |
| Speed/Latency | No reliable public source |
| Snapshot time | 2026-08-11T06:28:09.895Z |
| Source | View source |
Verified limitations
Usage boundaries
- No verified usage, ranking, call-volume, token-consumption, heat, download, or OpenRouter metric is populated.
Missing public information
Public information not yet available
Parameter scale not disclosedRelease date not disclosedNot listed on OpenRouterNo reliable benchmark sourceNo public model-card activity countersNo linkable model-specific reviewSpeed/latency not disclosed