Description
Step 3.5 Flash is StepFun's most capable open-source foundation model. Built on a sparse Mixture of Experts (MoE) architecture, it selectively activates only 11B of its 196B parameters per token. It is a reasoning model that is incredibly speed efficient even at long contexts.
API Usage Examples
OpenAI Compatible Endpoint
Use this endpoint with any OpenAI-compatible library. Model: StepFun: Step 3.5 Flash (stepfun/step-3.5-flash)
curl https://api.ridvay.com/v1/chat/completions -H "Content-Type: application/json" -H "Authorization: Bearer YOUR_API_KEY" -d '{
"model": "stepfun/step-3.5-flash",
"messages": [
{
"role": "user",
"content": "Explain the capabilities of the StepFun: Step 3.5 Flash model"
}
],
"temperature": 0.7,
"max_tokens": 1024
}'Supported Modalities
- Text
API Pricing
- Input: 0.1$ / 1M tokens
- Output: 0.3$ / 1M tokens
Token Limits
- Max Output: 256,000 tokens
- Max Context: 256,000 tokens
Subscription Tiers
- free
- pro
- ultimate