StepFun
Model developerplatform.stepfun.ai ↗
Models on StepFun · prices & measurements for models served by StepFun’s APIUSD / MTOK · VERIFIED 25 MINUTES AGO
| MODEL | INPUT | OUTPUT | CONTEXT | QUANT | TTFT | TPS | VS BEST ELSEWHERE |
|---|---|---|---|---|---|---|---|
| Step 3.7 FlashStepFunBEST PRICE | $0.20 | $1.15 | 256K | fp8 | 3s° | 229° tok/s | cheapest here |
| Step 5 PreviewStepFun | $1.00 | $2.70 | 1M | fp8 | — | — | only provider |
TTFT/TPS: ModelIndex-measured medians (P50, trailing 21d) for StepFun’s endpoints · ° = measured via OpenRouter routing · ✕ = probed, no measurable stream · SMOKE: of 5 capability probes passed · methodology on each model page
Not served on StepFun’s own API
Older StepFun models retired from the first-party API but still available through cloud platforms.