Step 3.7 Flash
Step 3.7 Flash is a multimodal model developed by StepFun that uses a Mixture-of-Experts architecture to process text, images, and video. It is designed for high-efficiency tasks and supports both reasoning and tool-calling capabilities. The model features a large context window of 262,144 tokens.
Step 3.7 Flash specs and pricing
- Provider: StepFun
- Released: May 28, 2026
- Context window: 262K tokens
- Max output: 230K tokens
- Input: text, images, video
- Output: text
- Price: $0.20 input / $1.15 output per 1M tokens
- Reasoning: yes
- Tool calling: yes
What Step 3.7 Flash is good at
- Analyzing visual content from video files
- Complex reasoning tasks requiring tool integration
- Processing large documents or long-form inputs
To-dos to try with Step 3.7 Flash
- Upload a video file and summarize the key events that occur in the first five minutes.
- Provide a long technical manual and ask the model to extract specific troubleshooting steps using its tool-calling capability.
- Analyze a series of images to identify common patterns or discrepancies between them.
FAQ
- What types of media can Step 3.7 Flash process? The model is capable of handling text, images, and video as input.
- Who developed Step 3.7 Flash? This model was developed by StepFun.
- How much does Step 3.7 Flash cost? Step 3.7 Flash costs $0.20 per million input tokens and $1.15 per million output tokens through OpenRouter. In todo.is a typical agent step costs about 0.72 credits ($1 = 100 credits).
- What is the context window of Step 3.7 Flash? Step 3.7 Flash can read up to 262K tokens at once and write up to 230K tokens in one reply.
- Can I use Step 3.7 Flash without coding? Yes. In todo.is you pick Step 3.7 Flash as your agent's model and write to-dos in plain words, on the web, the Android app, WhatsApp or Telegram. No API key needed: credits are included, or you can bring your own key.
JavaScript is required to use the todo.is app.