Step 3.7 Flash
stepfun · stepfun/step-3.7-flash
Newer StepFun flash model for faster agents, coding, and multimodal prompts
≈171k Chinese characters of context · Reads images · Step-by-step reasoning · Calls tools / agents · Structured JSON output · Open weights, self-hostable
Read a 200,000-Chinese-character book and write a 2,000-Chinese-character summary: about $0.06
An order-of-magnitude estimate at 1.5 tokens per Chinese character and the vendor's own rate — not a quote. Full method: the glossary on the AI Models page.
Specs
| Context | 256,000(≈171k Chinese characters) |
|---|---|
| Max output | 256,000 |
| Structured output | Yes |
| Open weights | Yes |
| Released | 2026-05-29 |
Source: models.dev snapshot 2026-08-29
Who serves it, at what price
| Provider | In /M | Out /M | Cache read /M |
|---|---|---|---|
| StepFun (China)first-party | $0.185 | $1.11 | $0.037 |
| Requesty | $0.2 | $1.15 | $0.04 |
| StepFun (Global) | $0.185 | $1.11 | $0.037 |
| StepFun Step Plan (Global) | — | — | — |
| StepFun Step Plan (China) | — | — | — |
Rows tagged “first-party” are the model vendor's own pricing; untagged rows are resale channels and may differ.
When to choose it
This model is on our watch list but has no written assessment yet — we do not write what we cannot support. The specs and prices above still stand.
Leaderboard
Not yet on any leaderboard we track. That does not mean the model performs poorly — it means we have not taken this snapshot for it yet, and we do not publish a score we have not measured.