Step 5 Preview
stepfun/step-5-previewStep 5 Preview (stepfun/step-5-preview) is an AI model from StepFun with a 1,000,000-token context window and 64,000 max output tokens, priced at $1.00/1M input and $2.70/1M output tokens. Available via the haimaker.ai OpenAI-compatible API.
Overview
Step 5 Preview is a chat model by StepFun. It supports a 1M token context window. Supports function calling, vision, reasoning.
Features & Capabilities
| Mode | Chat |
| Context Window | 1,000,000 tokens |
| Max Output | 64,000 tokens |
| Function Calling | Supported |
| Vision | Supported |
| Reasoning | Supported |
| Web Search | Not supported |
| Url Context | Not supported |
API Usage
from openai import OpenAI
client = OpenAI(
base_url="https://api.haimaker.ai/v1",
api_key="YOUR_API_KEY",
)
response = client.chat.completions.create(
model="stepfun/step-5-preview",
messages=[
{"role": "user", "content": "Hello, how are you?"}
],
)
print(response.choices[0].message.content)Frequently Asked Questions
What is the context window of Step 5 Preview?
Step 5 Preview (stepfun/step-5-preview) has a 1,000,000-token context window and supports up to 64,000 output tokens per request.
How much does Step 5 Preview cost?
Step 5 Preview is priced at $1.00 per 1M input tokens and $2.70 per 1M output tokens when accessed via the haimaker.ai OpenAI-compatible API.
What features does Step 5 Preview support?
Step 5 Preview supports function calling, vision, reasoning.
How do I use Step 5 Preview via API?
Send requests to https://api.haimaker.ai/v1/chat/completions with model "stepfun/step-5-preview" using any OpenAI-compatible SDK. Authentication uses a Bearer API key from https://app.haimaker.ai.
Use Step 5 Preview with the haimaker API
Available via the haimaker.ai OpenAI-compatible API.