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STEPFUN
Language reasoning, vision, speech, and multimodal generation. China and international platforms are treated as separate channels.
Company originChina· China
Business typeModel developers
OrganizationSTEPFUN
Official website ↗Official documentation↗Model families & platform products
Step
Family names describe the provider's products and are not directly callable API IDs. Check the corresponding documentation for versions, access, and service regions.
Indexed models 8
View the full directory →| Model / developer | Provider / API region | Reference API pricing Original currency · Actual billing unit | Free trial | Subscription plans | Details |
|---|---|---|---|---|---|
Step 1 (32K)STEPFUN · Chinese modelstep-1-32kReleased:2025-01-01 | STEPFUNOriginal provider · API region unverified | Input $2.05 · Output $9.59US dollar USD / million tokensCatalog reference ↗Billing conditionsOriginal source note: | Free trial unverified | Plan information unverified | View details →Configuration unverified |
Step 2 (16K)STEPFUN · Chinese modelstep-2-16kReleased:2025-01-01 | STEPFUNOriginal provider · API region unverified | Input $5.21 · Output $16.44US dollar USD / million tokensCatalog reference ↗Billing conditionsOriginal source note: | Free trial unverified | Plan information unverified | View details →Configuration unverified |
Step 3.5 FlashSTEPFUN · Chinese modelstep-3.5-flashReleased:2026-01-29 | STEPFUNOriginal provider · API region unverified | Input $0.1 · Output $0.3US dollar USD / million tokensCatalog reference ↗Billing conditionsOriginal source note: | Free trial unverified | Plan information unverified | View details →Configuration unverified |
Step 3.5 Flash 2603STEPFUN · Chinese modelstep-3.5-flash-2603Released:2026-04-02 | STEPFUNOriginal provider · API region unverified | Input $0.1 · Output $0.3US dollar USD / million tokensCatalog reference ↗Billing conditionsOriginal source note: | Free trial unverified | Plan information unverified | View details →Configuration unverified |
Step 3.7 FlashSTEPFUN · Chinese modelstep-3.7-flashReleased:2026-05-29 | STEPFUNOriginal provider · API region unverified | Input $0.185 · Output $1.11US dollar USD / million tokensCatalog reference ↗Billing conditionsOriginal source note: | Free trial unverified | Plan information unverified | View details →Configuration unverified |
StepAudio 2.5 ASRSTEPFUN · Chinese modelstepaudio-2.5-asrReleased:2026-04-24 | STEPFUNOriginal provider · API region unverified | View current official pricing ↗ | Free trial unverified | Plan information unverified | View details →Configuration unverified |
StepAudio 2.5 TTSSTEPFUN · Chinese modelstepaudio-2.5-ttsReleased:2026-04-16 | STEPFUNOriginal provider · API region unverified | View current official pricing ↗ | Free trial unverified | Plan information unverified | View details →Configuration unverified |
Step TTS 2STEPFUN · Chinese modelstep-tts-2Released:2026-03-01 | STEPFUNOriginal provider · API region unverified | View current official pricing ↗ | Free trial unverified | Plan information unverified | View details →Configuration unverified |
A catalog listing is not a verified API configuration.
Documented integrations 0
This provider's API parameters have not completed independent verification. Formal configuration exports are not available yet.
Sources
- 基本介绍 - StepFun 开放平台文档中心↗Last retrieved:2026/9/13
- Models.dev 基础目录（Third-party）↗Last retrieved:2026/9/13
Official entry points, family overviews, third-party listings, and validated integrations are labeled separately.