Stepfun/Step-3.5 Flash
step-3-5-flash
StepFun flash model for efficient multimodal reasoning, coding, and tool use
Specification
most-agreed values
Context
64K
Max output
4K
Released
2026-02-02
Knowledge cutoff
2025-01
Retires
—
Open weights
no
Input
text, image
Output
text
Price
US dollars per million tokens · most-agreed
Input
$0.10
Output
$0.30
Cache read
$0.05
Available from 16 hosts
| Host | In $/M | Out $/M | Cache rd | Cache wr | Context | Output | Retires |
|---|---|---|---|---|---|---|---|
| nvidia · stepfun-ai | free | free | — | — | 256K | 16K | — |
| edenai | $0.09 | $0.30 | $0.02 | — | 262K | 256K | — |
| vercel · stepfun | $0.09 | $0.30 | $0.02 | — | 262K | 262K | — |
| empiriolabs | $0.10 | $0.30 | $0.02 | — | 256K | 131K | — |
| huggingface · stepfun-ai | $0.10 | $0.30 | — | — | 262K | 256K | — |
| kilo · stepfun | $0.10 | $0.30 | — | — | 262K | 66K | — |
| nano-gpt · stepfun-ai | $0.10 | $0.30 | $0.05 | — | 262K | 66K | — |
| openrouter · stepfun | $0.10 | $0.30 | — | — | 262K | 66K | — |
| siliconflow · stepfun-ai | $0.10 | $0.30 | — | — | 262K | 262K | — |
| siliconflow-cn · stepfun-ai | $0.10 | $0.30 | — | — | 262K | 262K | — |
| stepfun | $0.10 | $0.30 | $0.02 | — | 256K | 256K | — |
| stepfun-ai | $0.10 | $0.30 | $0.02 | — | 256K | 256K | — |
| zenmux · stepfun | $0.10 | $0.30 | — | — | 256K | 64K | — |
| qiniu-ai · stepfun | — | — | — | — | 64K | 4K | — |
| stepfun-ai-step-plan | — | — | — | — | 256K | 256K | — |
| stepfun-step-plan | — | — | — | — | 256K | 256K | — |
