StepFun: Step 5 Preview (stepfun/step-5-preview) costs $1 per 1M prompt tokens and $2.7 per 1M completion tokens, has a 1,048,576-token context window, and supports tool calling, structured outputs, reasoning and response format. Data updated 2026-10-30.
- Prompt price
- $1 / 1M tokens
- Completion price
- $2.7 / 1M tokens
- Context
- 1,048,576 tokens
- Input modalities
- text, image, video
- Output modalities
- text
- Tokenizer
- Other
- Instruct type
- —
- Knowledge cutoff
- —
- Hugging Face
- stepfun-ai/Step-5-Preview
Last price change: 2026-10-08
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...
Price history
No price changes recorded