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A new-generation frontier model built for real-world tasks
Step 5 preview
Advancing the Pareto Frontier
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Models overview
StepAudio 3
A family of models for speech recognition, real-time interaction, voice and music generation
Make your first call in three steps
from openai import OpenAI
client = OpenAI(
api_key="YOUR_STEP_API_KEY",
base_url="https://api.stepfun.ai/v1",
)
response = client.chat.completions.create(
model="YOUR_MODEL_ID",
messages=[
{"role": "user", "content": "Hello, please introduce yourself in one sentence."}
],
)
print(response.choices[0].message.content)Other ways to build
Step Plan subscription
One subscription for building with StepFun-from coding to agentic workflows
Studio, no code required
Try models straight in the browser, then wire up the API once you know it works
Next steps for building
Developer Program
Tokens and technical support for independent developers and early-stage teams
Technical Support
Developer community, enterprise enquiries, and rate-limit increase requests
platform@stepfun.com
Discord community
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Sign up and call every public model,usage-based billing
