Step 3.5 Flash
stepfun/step-3.5-flashStep 3.5 Flash (stepfun/step-3.5-flash) is an AI model from Stepfun with a 262,144-token context window and 65,536 max output tokens, priced at $0.10/1M input and $0.30/1M output tokens. Available via the haimaker.ai OpenAI-compatible API.
Overview
Step 3.5 Flash is a chat model by Stepfun. It supports a 262K token context window. Supports function calling, reasoning.
Features & Capabilities
| Mode | chat |
| Context Window | 262,144 tokens |
| Max Output | 65,536 tokens |
| Function Calling | Supported |
| Vision | - |
| Reasoning | Supported |
| Web Search | - |
| Url Context | - |
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-3.5-flash",
messages=[
{"role": "user", "content": "Hello, how are you?"}
],
)
print(response.choices[0].message.content)Frequently Asked Questions
What is the context window of Step 3.5 Flash?
Step 3.5 Flash (stepfun/step-3.5-flash) has a 262,144-token context window and supports up to 65,536 output tokens per request.
How much does Step 3.5 Flash cost?
Step 3.5 Flash is priced at $0.10 per 1M input tokens and $0.30 per 1M output tokens when accessed via the haimaker.ai OpenAI-compatible API.
What features does Step 3.5 Flash support?
Step 3.5 Flash supports function calling, reasoning.
How do I use Step 3.5 Flash via API?
Send requests to https://api.haimaker.ai/v1/chat/completions with model "stepfun/step-3.5-flash" using any OpenAI-compatible SDK. Authentication uses a Bearer API key from https://app.haimaker.ai.
Use Step 3.5 Flash with the haimaker API
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