262KContext
$0.1In, per 1M
$0.3Out, per 1M
- Lab
- StepFun
- Released
- 29 Jan 2026
- Context window
- 262K tokens
- Longest answer
- 66K tokens
- Input, per 1M tokens
- $0.1
- Output, per 1M tokens
- $0.3
- Reads images
- No
- Reasoning
- Yes
- Tool calling
- Yes
- Open weights
- Yes
- Answers in
- text
- Model id
- stepfun/step-3.5-flash