Stepaudio 2.5: API pricing, providers and specs
Audioby StepFun
Stepaudio 2.5 is a audio model by StepFun. One provider serves it: EmpirioLabs AI, at $3.50 /1M.
A newer version is out: Stepaudio 3
Lowest price$3.50/1Mat EmpirioLabs AI
Maker's price—The maker does not sell it
Providers1
Context256K
How Stepaudio 2.5 compares
Against the 43 audio models on the site priced the same way.
- Cheap for its class: at $3.50 /1M, its lowest price undercuts 70% of comparable models (median $6.15).
- Its 256K-token context window is larger than 74% of them (median 128K), about 380 pages of text.
- 1 providers serve it; 0% of comparable models have fewer.
Stepaudio 2.5 prices by provider
Every provider's list price, read from its own price page or API. A price marked “from” changes with context length, resolution or mode.
| Provider | Input | Output | Prompt caching | Context |
|---|---|---|---|---|
 EmpirioLabs AI | $1.50/1M | $3.50/1M | $0.30/1M | 256K |
Prices in US dollars, updated daily from each provider. Prices last checked Oct 25, 2026.
Specs
- Type
- Audio
- Maker
- StepFun
- Inputs
- Text
- Outputs
- Audio
- Context
- 256K≈ 380 pages of text
- Max output
- —
- Capabilities
- —
- Released
- —
- License
- —
- Open weights
- —
Alternatives to Stepaudio 2.5
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| Stepaudio 2.5this model | $3.50/1M | 256K | — | 1 |
 Gemini 3.8 Flash TTS | $6.30/1M | 8K | — | 8 |
| Gemini 3.8 Live | $4.50/1M | 131K | — | 3 |
| Gemini 3.8 Flash-Lite TTS | $4.20/1M | 8K | — | 7 |
 Qwen Audio 3.1 TTS | $3.74/1M | — | — | 1 |
| Qwen Audio 3.0 Realtime Plus | $6.40/1M | — | — | 1 |
| Qwen Audio 3.1 ASR Message | $1.40/1M | — | — | 1 |
| Qwen Audio 3.1 ASR Stream | $1.40/1M | — | — | 1 |
| Qwen Audio 3.1 Realtime Plus | $5.98/1M | 256K | — | 3 |
More from StepFun
GOT-OCR 2.0StepFun$0.05/imgStep 2 16KStepFun$2/1MStep 3.5 FlashStepFun$0.292/1MStep 3.5 Flash 2603StepFun$0.30/1MStep 3.7 FlashStepFun$0.925/1MStep 5 PreviewStepFun$2.70/1MStep3StepFun$2.75/1MStepaudio 2.5 RealtimeStepFun$10/1MStepaudio 2.5 FAQ
The lowest price for Stepaudio 2.5 is $3.50 /1M, at EmpirioLabs AI.
Stepaudio 2.5 reads up to 256K tokens per request.
We have not found Stepaudio 2.5's weights published by its maker.
1 API providers serve Stepaudio 2.5. Compare their prices above, or open a provider to see everything it offers.
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