StepFun: Step 5 Previewstepfun
Bottom Line
StepFun: Step 5 Preview: $1.00/1M input, $2.70/1M output, 1.0M context. 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...
API Pricing (per 1M tokens)
| Input | $1.00 |
| Output | $2.70 |
| Cache Read | — |
| Cache Write | — |
| Blended (3:1) | $1.43 |
Specs & Performance
| Context Length | 1.0M |
| Max Output | 64K |
| Intelligence | — |
| Coding | — |
| Math | — |
| Speed | — |
| TTFT | — |
| CPS Grade | — |
| Input / Output Modalities | text, image, video → text |
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FAQ
How much does the StepFun: Step 5 Preview API cost?
StepFun: Step 5 Preview costs $1.00/1M input tokens and $2.70/1M output tokens. Blended cost at a 3:1 ratio is about $1.43/1M tokens.
What is the context window of StepFun: Step 5 Preview?
StepFun: Step 5 Preview supports a 1.0M token context window with up to 64K output tokens.
Is StepFun: Step 5 Preview worth it?
StepFun: Step 5 Preview has a CPS grade of — (score —), intelligence index —, coding index —. Use the compare page to benchmark against rivals.