stepfun

StepFun: Step 3.7 Flash

stepfun/step-3.7-flash

Step 3.7 Flash is StepFun's latest high-efficiency multimodal Mixture-of-Experts model.

  • Context window: 262,144 tokens
  • Input: text, image, video
  • Output: text
  • Pricing: $0.2/M input tokens, $1.15/M output tokens

RuntimeWire Composite Index

Score: 48.8 — ranked #18 overall (1/4 evaluations covered). View full rankings.

Community sentiment

Positive (+40) — 1 positive, 0 negative, 0 neutral across 1 community samples from X and the web, as of 2026-10-19.

Community mentions of Step 3.7 Flash emphasize its reliability, with users saying it “was super reliable.” Some comments also imply the model may no longer be available, noting it worked “while it lasted.”

  • “@FrankYouChill @kilocode @StepFun_ai real step 3.7 flash was super reliable while it lasted 🙌” — X

RuntimeWire coverage

View on OpenRouter. Model data sourced from OpenRouter.