# StepFun StepAudio 3 voice and music models (limited-time free until November 17)

> StepFun · Daily · API free tier

- Quota: The StepAudio 3 series of voice and music models on the StepFun Open Platform falls under a limited-time free policy; the official pricing page says the free period runs until 11:59:59 on 2026-11-17 Beijing time, after which the new prices apply; a personal account can call them after real-name verification
  Official API pricing page (price notice above the voice model table): "The StepAudio 3 series models and related services will be billed at the new prices in the table below from 12:00:00 noon on November 17, 2026, Beijing time. Services already charged before then continue at the existing rates, and models covered by the limited-time free policy are free until 11:59:59 on November 17, 2026, Beijing time." New price table: realtime voice 0.65 CNY per session minute, speech synthesis 95 CNY per million billed input characters, music generation from 16 CNY per output audio hour, speech recognition 7.5 CNY per audio hour. Official rate-limit page: a personal account with under 100 CNY in cumulative top-ups is on tier V0, with concurrency of 5, 100 requests per minute and 500,000 tokens per minute.
- Models: stepaudio-3-realtime, stepaudio-3-tts, stepaudio-3-gen, stepaudio-3-music, stepaudio-3-asr-max
- Requirements: Mainland China phone number required / ID verification
- Validity: Limited, ends 2026-11-17
- Region: Mainland China
- Verified: 2026-11-09
- Claim: https://lanmao.ai/go/stepfun-stepaudio3-preview-limited-free
- Official source: https://platform.stepfun.com/docs/zh/guides/pricing/details.md
- Notes: Re-checked on 2026-11-09: the official pages previously said only "limited-time free"; they now give an end time of 11:59:59 on 2026-11-17 (Beijing time), after which everything is billed at the new prices. The pricing table now uses model names without the preview suffix and does not list which models the free policy covers, so rely on the labels in the console. No token or call cap is published for the free period. Personal real-name verification uses Alipay face recognition (the docs say free-plan users must verify to keep using the service). The sign-up bonus and Mini Plan of the same vendor are in the StepFun entry on this site; this one covers only the free voice and music models. The sign-up and real-name flow was not completed during verification.

## Related offers
- [Nous Portal Free Tier (free model pool, $0 / month)](https://lanmao.ai/o/nous-portal-free-models.md)
- [StepFun Open Platform](https://lanmao.ai/o/stepfun.md)
- [Voyage AI (Embedding / Rerank)](https://lanmao.ai/o/voyage-ai-free-tokens.md)

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Source: lanmao.ai, verified 2026-11-09, https://lanmao.ai/o/stepfun-stepaudio3-preview-limited-free/