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StepFun ยท Next-Gen Flagship

Step-5 Preview API

StepFun's next-generation flagship preview. Advanced reasoning, multilingual, and agentic capabilities.

$0.40
Input / 1M tokens
$1.20
Output / 1M tokens
128K
Context window
32K
Max output
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Why use Step-5 Preview on NovAI?

  • Next-gen architecture - StepFun's latest flagship (preview)
  • Advanced reasoning - strong on complex multi-step problems
  • Agentic-ready - built for tool use and autonomous workflows
  • Multilingual - strong CN/EN performance
  • Preview pricing - early access at competitive rates

Best use cases

  • Advanced reasoning
  • Agentic workflows
  • Multilingual tasks
  • Complex analysis
  • Research assistants

Quick start

cURL

curl https://aiapi-pro.com/v1/chat/completions \
  -H "Authorization: Bearer $NOVAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "step-5-preview", "messages": [{"role":"user","content":"Hello"}]}'

Python (OpenAI SDK)

from openai import OpenAI
client = OpenAI(base_url="https://aiapi-pro.com/v1", api_key="YOUR_NOVAI_API_KEY")
resp = client.chat.completions.create(
    model="step-5-preview",
    messages=[{"role":"user","content":"Hello"}],
)
print(resp.choices[0].message.content)

Try Step-5 Preview today

Zero platform fee. Credits never expire. OpenAI-compatible API.

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