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Step-3.5 Flash

budget

by StepFun

Model ID:stepfun-ai/Step-3.5-Flash

Fast, cost-effective tasks. Available through the llmair OpenAI-compatible API at https://api.llmair.ai/v1.

Modality
text
Price / 1M
$0.05 in
$0.20 out
Context
32K
Provider
StepFun

Quick Start

Call stepfun-ai/Step-3.5-Flash via the OpenAI-compatible API.

curl
curl https://api.llmair.ai/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "stepfun-ai/Step-3.5-Flash",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Capabilities

✓
Text Generation
Supported
✓
Streaming
Supported
✓
JSON Mode
Supported
✓
Function Calling
Supported
✓
System Prompts
Supported
×
Vision Input
Not supported
×
Image Generation
Not supported
×
Audio
Not supported
×
Embeddings
Not supported
×
Reasoning
Not supported

Pricing

All prices per 1 million tokens. Pay only for what you use.

TypePrice
Input (prompt)$0.0500 / 1M
Output (completion)$0.2000 / 1M

✓ Best For

  • ▸Fast, cost-effective tasks
  • ▸High-volume, cost-sensitive workloads

⚠ Limitations

  • ▸No image input or output
  • ▸No native audio processing
  • ▸Lower reasoning depth than flagship models
  • ▸No real-time internet access
  • ▸Knowledge has a training cutoff