这个资源提供什么What this offer provides
StepFun 官方 Step Plan 页面常见问题已列出“关于免费体验及 Plan 购买名额调整的通知”,同期多家报道记录该通知关闭了新增免费体验领取通道。官方 Step Plan 概述当前只列 Flash Mini ¥49/月、Flash Plus ¥99/月、Flash Pro ¥199/月、Flash Max ¥699/月四档付费套餐,没有免费档。已领取用户的剩余权益以账户页为准。Historical entry. StepFun's Step Plan free experience is closed to new claims (no later than 2026-09-22); the official Step Plan page now sells it as a paid subscription. The earlier "stack up to 75 days" promotion no longer applies. The endpoints below are kept for reference only.
关键信息Key details
快速上手Quick start
先确认账号已开通 Step Plan,再创建 Step API Key;按工具协议选择 OpenAI 兼容或 Anthropic 兼容 Base URLConfirm Step Plan access first, create a Step API Key, then choose the OpenAI-compatible or Anthropic-compatible Base URL for your tool
注册与接入步骤Registration and access steps
准备条件Prerequisites
- StepFun account
- Active Step Plan entitlement
- Step API key
- Open the Step Plan page and confirm the current free-experience entitlement on your accountOpen the Step Plan page and confirm the current free-experience entitlement on your account
- Create a Step API Key in the StepFun Open PlatformCreate a Step API Key in the StepFun Open Platform
- For OpenAI-compatible Chat Completions use https://api.stepfun.com/step_plan/v1For OpenAI-compatible Chat Completions use https://api.stepfun.com/step_plan/v1
- For Anthropic-compatible Messages use https://api.stepfun.com/step_planFor Anthropic-compatible Messages use https://api.stepfun.com/step_plan
- Use step-5-preview for a first verification requestUse step-5-preview for a first verification request
发送第一条请求Send first request
使用下方命令开始调用。Use the command below to make your first request.
export STEP_API_KEY="你的 Key"
curl https://api.stepfun.com/step_plan/v1/chat/completions --header "Authorization: Bearer $STEP_API_KEY" --header 'Content-Type: application/json' --data '{"model":"step-5-preview","messages":[{"role":"user","content":"Hello"}]}'免费模型逐个看Free models by entry
| 模型Model | 免费额度Free quota | 备注Notes |
|---|---|---|
step-5-previewstep-5-preview | Uses Step Plan credit poolUses Step Plan credit pool | 1M-token context window per official model docs1M-token context window per official model docs |
step-3.7-flashstep-3.7-flash | Uses Step Plan credit poolUses Step Plan credit pool | Listed as a current flagship model on the official Step Plan siteListed as a current flagship model on the official Step Plan site |
StepAudio 3 familyStepAudio 3 family | Uses Step Plan credit poolUses Step Plan credit pool | Voice-model family listed on the official Step Plan siteVoice-model family listed on the official Step Plan site |
额度以官方页面和控制台实时显示为准;公测或限免额度可能随时调整。Quota follows the official page and console; preview or limited free access can change.
如何使用How to use
先确认账号已开通 Step Plan,再创建 Step API Key;按工具协议选择 OpenAI 兼容或 Anthropic 兼容 Base URLStep Plan, Step API Key; OpenAI Anthropic Base URL
前置条件Prerequisites
- StepFun accountStepFun account
- Active Step Plan entitlementActive Step Plan entitlement
- Step API keyStep API key
步骤Steps
- Open the Step Plan page and confirm the current free-experience entitlement on your accountOpen the Step Plan page and confirm the current free-experience entitlement on your account
- Create a Step API Key in the StepFun Open PlatformCreate a Step API Key in the StepFun Open Platform
- For OpenAI-compatible Chat Completions use https://api.stepfun.com/step_plan/v1For OpenAI-compatible Chat Completions use https://api.stepfun.com/step_plan/v1
- For Anthropic-compatible Messages use https://api.stepfun.com/step_planFor Anthropic-compatible Messages use https://api.stepfun.com/step_plan
- Use step-5-preview for a first verification requestUse step-5-preview for a first verification request
FreeLLM 自测FreeLLM test
我们测了什么What we tested
核对 Step Plan 当前官方接入链路、Step 5 Preview 模型规格、双协议 Base URL 与限时免费体验活动口径;在没有登录态 Step Plan 权益和 API Key 的前提下,不把真实额度到账和模型生成写成已实测。
- 打开 StepFun 官方 Step Plan 页面,确认 Step Plan 为订阅制服务并覆盖旗舰模型。
- 打开官方 Step Plan 快速开始,核对 OpenAI 兼容 Base URL、Anthropic 兼容 Base URL、API Key 前置条件和推荐验证模型 step-5-preview。
- 打开官方 Step 5 Preview 模型页,核对 1M tokens 上下文、1M 最大输入和 64k 最大输出。
- 交叉核对 2026-09-20 至 2026-09-22 的当前活动信息,确认登录 15 天、首次 API 调用再 15 天、邀请奖励可将总体验期叠加至最高 75 天的活动口径。
- 当前测试环境没有登录后的 StepFun Step Plan 权益和可用 API Key,因此没有实际验证免费体验天数到账、具体体验档位、Credit 余额或一次真实模型响应。
测试结果Result
官方产品与接入预检通过:Step Plan、旗舰模型覆盖、step-5-preview、1M 上下文以及两套兼容接口均可由官方页面确认。最高 75 天活动口径有多处当周信息一致,但公开抓取无法展开官方登录态邀请规则,因此保留 medium confidence,并要求用户以账户活动页的实际权益和到期时间为准。
测试证据Test evidence
- Step Plan 官方页面 ↗确认 Step Plan 为订阅制服务,并支持旗舰模型
- Step Plan 快速开始 ↗确认 OpenAI / Anthropic 兼容 Base URL、API Key 与 step-5-preview
- Step 5 Preview 官方模型页 ↗确认 1M tokens 上下文窗口、最大输入和模型规格
官方来源Official sources
2026-10-08 复核:官方 Step Plan 页面 FAQ 第 09 项为“关于免费体验及 Plan 购买名额调整的通知”;官方 Step Plan 概述只列四档付费套餐(¥49/¥99/¥199/¥699 月付)。第三方活动追踪页记录 9 月 22 日官网弹窗写明“关闭新增免费体验领取通道”。2026-10-08 : Step Plan FAQ 09 “ Plan ”; Step Plan (¥49/¥99/¥199/¥699 )。 9 22 “ ”。