Step 5 Preview
step-5
StepFun's next-generation flagship base model for coding and professional knowledge work, with native text, image, and video input and a 1M-token context window
Specification
most-agreed values
Context
1M
Max output
131K
Released
2026-09-16
Knowledge cutoff
—
Retires
—
Open weights
no
Input
text, image, video
Output
text
Price
US dollars per million tokens · most-agreed
Input
$1.00
Output
$2.70
Cache read
$0.05
Available from 8 hosts
| Host | In $/M | Out $/M | Cache rd | Cache wr | Context | Output | Retires |
|---|---|---|---|---|---|---|---|
| stepfun | $0.959 | $2.741 | $0.048 | — | 1M | 66K | — |
| empiriolabs | $1.00 | $2.70 | $0.05 | — | 1M | 131K | — |
| nano-gpt · stepfun | $1.00 | $2.70 | $0.05 | — | 1M | 1M | — |
| stepfun-ai | $1.00 | $2.70 | $0.05 | — | 1M | 66K | — |
| vercel · stepfun | $1.00 | $2.70 | $0.05 | — | 1M | 1M | — |
| aihubmix | $1.08 | $3.0888 | $0.054 | — | 1M | 1M | — |
| stepfun-ai-step-plan | — | — | — | — | 1M | 66K | — |
| stepfun-step-plan | — | — | — | — | 1M | 66K | — |
