stepfun
StepFun: Step 3.5 Flash
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....
Quality Score
99/100
composite of price, context, capability
Input Price
$0.10
per 1M tokens
Output Price
$0.30
per 1M tokens
Context Window
262,144
tokens
- Model ID
- stepfun/step-3.5-flash
- Vendor
- stepfun
- Tokenizer
- Other
- Input Modalities
- text
- Output Modalities
- text
- Max Output
- 65,536 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- text only
- Audio
- no
- Moderated
- no