StepfunNewPaid
Step 5 Preview
Step 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters). It performs strongly in software engineering and professional...
stepfun/step-5-preview
Capabilities
🧠Reasoning👁️Vision🎬Video🔧Tools🧩Structured📜Long context
Specifications
Context window
1M tokens
Input price
$1.00/M
Output price
$2.70/M
Provider
Stepfun
Input modalities
text, image, video
Output modalities
text
Pricing
Pay-per-token
Model ID
stepfun/step-5-preview
Strengths
- +Strong step-by-step reasoning
- +Understands images (vision input)
- +Supports tool / function calling
- +Large 1M-token context window
Considerations
- –No notable limitations for general use