StepFun’s terms license API prompts and outputs to it for any purpose

When you use the Services in accordance with these Terms, you grant us, to the fullest extent permitted under the applicable law, a nonexclusive, worldwide, royalty-free, fully paid up, transferable, sublicensable, perpetual, irrevocable license to copy, display, upload, perform, distribute, transmit, make available, store, access, modify, exploit, commercialize and otherwise use all Output, Prompts and associated API call logs (“Usage Data”) elicited by you for any purpose in any form, medium or technology now known or later developed, including but not limited to (i) facilitating other users’ ability to elicit Output, and (ii) promoting the Services.

The terms also say the Services “MAY BE IMPROVED THROUGH THE USE OF USAGE DATA FOR MODEL TRAINING AND FINE-TUNING”. For the StepFun Startup Program and other early access programs, the license “specifically includes the right to use Usage Data for training, fine-tuning, and otherwise improving StepFun’s artificial intelligence models and systems.” Terms of Service, kept 4 Nov 2026 · sha256 ba64e4507c3f

Within 30 days of termination or expiration of the Agreement, StepFun will:

StepFun will “delete all copies of Customer Data, including Customer Personal Data, processed by StepFun or any subprocessors”, except where law requires storage, to resolve a dispute, or “to combat harmful use of the Services”. The terms also give StepFun a perpetual, irrevocable license to store and use prompts, outputs and API call logs. For its Startup Program and other early access programs, the privacy policy says StepFun may use and retain such data as a controller. Data Processing Agreement, kept 4 Nov 2026 · sha256 4f6547754c82

Our servers are located in the United States. Meanwhile, due to the international nature of our business, your personal information may also be accessed by our affiliates or be transferred to third-party service providers and business partners, in connection with the purposes set out in this Policy.

The sentence is about personal information. The policy “does not apply when we act as a data processor” for commercial customers, and the DPA names no processing location for Customer Data. User Privacy, kept 4 Nov 2026 · sha256 cb0c3efb4fe3

Customer grants StepFun general authorization to engage subprocessors.

StepFun will put a contract with each subprocessor and will “remain liable to Customer, subject to the liability limitations in the Agreement, for each subprocessor’s acts and omissions”. Data Processing Agreement, kept 4 Nov 2026 · sha256 4f6547754c82

This Data Processing Agreement (“DPA”) is incorporated into and forms part of the Terms of Service or other agreement between Customer and StepFun that references this DPA and governs Customer’s use of the Services (the “Agreement”). It applies to StepFun’s processing of Customer Data as defined below.

The DPA incorporates the EU Standard Contractual Clauses “to the extent required by applicable data protection laws”, with UK and Swiss addenda. Data Processing Agreement, kept 4 Nov 2026 · sha256 4f6547754c82

Pay-as-you-go calls to the standard Open Platform API are rate limited by tier according to the cumulative top-up amount on your account. Only cash top-ups count toward that amount; vouchers do not.

Individual tiers run from V0 (“Under $15”, 5 concurrency, 100 RPM, “500,000” TPM) to V4 (“$1,500 and above”). Step Plan usage follows a “monthly Credit allowance”, and limits may change “When resources reach capacity”. Pricing and rate limits, kept 4 Nov 2026 · sha256 392dc4e5afc2