StepFun
Step 3.5 Flash
stepfun/step-3.5-flash
Input
$0.10
per 1M tokens
Output
$0.30
per 1M tokens
Cached input
—
per 1M tokens
Step 3.5 Flash is StepFun's most capable open-source foundation model. Built on a sparse Mixture of Experts (MoE) architecture, it selectively activates only 11B of its 196B parameters per token....
- Released
- Context window
- 262K tokens
- Max output
- 66K tokens
- Input
- text
- Output
- text
- Reasoning
- Yes
Price history
No price changes since we started tracking on .
Providers on OpenRouter
1 endpoint serves this model. Uptime is OpenRouter's share of successful requests; prices per 1M tokens.
| Provider | Input | Output | Context window | Uptime 30 min | Uptime 24 h |
|---|---|---|---|---|---|
| SiliconFlowfp8 | $0.10 | $0.30 | 262K | 100% | 99.65% |