StepFun
stepfun-ai/Step-3.5-Flash
StepFun flash model for efficient multimodal reasoning, coding, and tool use
Model facts
- Context window
- 262K tokens
- Maximum output
- 262K tokens
- Cheapest paid input
- $0.1 per 1M tokens
- Cheapest paid output
- $0.3 per 1M tokens
- Open weights
- no
- Providers
- 2
Capabilities and modalities
reasoning, tool calling, structured output, temperature control, text.
Observed price history
- 2026-08-24: $0.1 input / $0.3 output per 1M tokens
API providers
- SiliconFlow — model id stepfun-ai/Step-3.5-Flash; $0.1 input / $0.3 output per 1M tokens; provider documentation
- SiliconFlow (China) — model id stepfun-ai/Step-3.5-Flash; $0.1 input / $0.3 output per 1M tokens; provider documentation