Promos / Limited-time free model
StepFun
StepAudio 3 speech models free on the API until November 8.
This offer has ended. See current promos.
What you get
Free use of the StepAudio 3 series on the StepFun API: realtime speech, text to speech, audio and music generation, and speech recognition.
How to get it
Create a StepFun API account and call the StepAudio 3 models.
What it requires
A StepFun API account.
The catch
Ends Nov 8, 2026 at 23:59:59 UTC+8. From Nov 9, StepAudio 3 bills at list prices, for example $14 per million characters for text to speech and $0.125 per session minute for realtime speech.
From the official page · checked Nov 3, 2026
Details
StepFun's StepAudio 3 series (realtime speech, text to speech, audio generation, music generation and speech recognition) is free on the StepFun API for a limited time until 23:59:59 on November 8, 2026 (UTC+8). Billing at list prices starts at 00:00:00 on November 9 (UTC+8).