一个统一的 AI API。
你需要的每一个模型。
不再需要管理几十个 API 密钥和计费账户。图像、视频、音乐、语音和对话模型——一个端点、一个密钥、一个余额，全部搞定。
为来自顶级供应商的 50+ AI 模型提供服务
你需要的模型，全在一处。
从最先进的图像生成器到前沿 LLM——已集成，开箱即用。
Suno
Suno AIFull-featured AI music generation platform. Supports text-to-music, extend tracks, upload audio covers, generate cover images, and timestamped lyrics. 7 API endpoints.
Kling 3.0
KuaishouState-of-the-art AI video generation with 4K quality support. Text-to-video and image-to-video capabilities.
Flux 2
Black Forest LabsHigh-quality AI image generation with excellent prompt following and photorealistic output.
ElevenLabs V3
ElevenLabsUltra-realistic text-to-speech with natural sounding voices. Supports multiple languages and voice styles.
Gemini
GoogleGoogle's most capable AI model for text generation, reasoning, and conversation.
Background Remover
API in OneRemove image backgrounds instantly with AI precision. Perfect for product photos, portraits, and e-commerce.
多模态，一个平台。
通过文本提示生成逼真图像。Flux 2、Kling Image 等。
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从文本或图像生成电影级 AI 视频。Kling、Seedance 等。
用 Suno 创作原创歌曲，用 ElevenLabs 生成自然语音。音频，轻松搞定。
通过兼容 OpenAI 的格式访问 Gemini 和其他 LLM。
为高效开发者打造。
统一计费
一个额度余额，一张账单。不再在十几个 AI 平台间来回切换订阅。
企业级可靠性
具备智能路由的冗余基础设施。你的应用始终在线。
秒级切换
只需更改请求体中的模型名称。无需更新 SDK、无需迁移、零停机。
省更多。只为使用付费。
没有月度订阅，没有承诺。只有适用于所有模型的额度。
| 模型 | 类别 | 官方价格 | API in One | 节省 |
|---|---|---|---|---|
| Flux 2 | Image | $0.04/image | 10 credits (~$0.02) | 50% |
| Kling | Video | $0.32/video | 50 credits (~$0.10) | 69% |
| Suno | Music | $0.10/song | 20 credits (~$0.04) | 60% |
| ElevenLabs | Speech | $0.03/req | 5 credits (~$0.01) | 67% |
| Gemini | Chat | $0.01/req | 2 credits (~$0.004) | 60% |
| Face Swap | Tool | $0.05/req | 3 credits (~$0.006) | 88% |
按量付费
按需购买额度。没有定期扣费，没有意外账单。即时扩缩。
透明定价
每次 API 调用预先显示精确的额度费用。实时查看余额和使用记录。
免费额度起步
新账户获赠额度——足够测试平台上的每一个模型。
常见问题
什么是 API in One？
API in One 是一个统一的 AI API 网关，整合了 50+ AI 模型——包括 Flux 2、Kling、Suno、ElevenLabs 和 Gemini——统一在一个 REST API 之后。一个 API 密钥、一个额度余额、一个统一的响应格式，涵盖图像生成、视频生成、音乐创作、语音合成和对话。
计费方式是怎样的？
按量付费，使用额度计费。每次模型调用消耗固定数量的额度。没有月度订阅，没有隐藏费用。按需购买额度即可。
支持哪些模型？
图像生成（Flux 2、Kling Image、Ideogram）、视频生成（Kling 3.0、Seedance、Sora、Vidu、Runway）、音乐生成（Suno）、语音合成（ElevenLabs）、对话和推理（Gemini、Kimi）以及 AI 工具（换脸、背景移除）。我们持续接入最新模型。
每个模型都需要单独的密钥吗？
不需要。这正是我们的核心价值。一个 API 密钥适用于所有模型。在 JSON 请求体中指定模型名称即可。
有免费套餐吗？
有。新账户可获得免费赠送额度，可用于试用平台上的任何模型。无需信用卡即可开始。
响应格式是什么？
所有响应使用统一的 JSON 结构：任务 ID、状态、输出数据和额度消耗。异步任务（视频、音乐）通过 GET /api/v1/tasks/ 轮询。
有速率限制吗？
默认提供充裕的限制，适合生产工作负载。企业版可获得更高限制。请求不会被意外限流。
可以商用吗？
当然可以。所有生成内容均可商用，具体以各模型供应商条款为准。
如果模型宕机了怎么办？
失败的请求不消耗额度。API 返回清晰的错误码。我们监控所有上游供应商并提供状态透明度。
API 速度如何？
我们的统一 AI API 网关仅增加极小的延迟（<50ms）。实际生成时间取决于模型——Flux 2 或 Kling 的图像生成通常为 3-10 秒，视频生成 30-120 秒，对话响应几乎即时。性能与直接调用供应商相当。
有官方 SDK 或客户端库吗？
API 遵循标准 REST 规范，任何 HTTP 客户端都可使用。对于对话模型，我们完全兼容 OpenAI——你可以使用官方 OpenAI SDK、LangChain 或任何兼容 OpenAI 的库，只需将 base URL 改为 apiin.one。
异步任务支持 Webhook 吗？
支持。对于视频和音乐生成等长时间任务，你可以提供回调 URL。任务完成后，我们会向你的端点发送 POST 请求，无需轮询。
我的数据如何处理？
我们不会在处理请求所需时间之外存储你的提示词、生成结果或 API 请求内容。生成的资源可在有限时间内下载，之后自动清除。我们绝不使用你的数据进行训练。
可以不改代码就切换模型吗？
可以。同一类别的所有模型共享相同的端点和请求格式。从 Flux 2 切换到 Kling Image 生成图像，只需更改 JSON 请求体中的 model 参数。
支持团队或组织账户吗？
支持。你可以邀请团队成员共享额度余额，并在一个组织下管理 API 密钥。使用分析按密钥提供，方便按项目跟踪消耗。
正常运行时间保证是多少？
我们的 API 网关目标是 99.9% 的正常运行时间。上游模型可用性取决于各供应商，但我们会主动监控所有集成，并在可能时进行流量调度。
深受全球开发者喜爱
加入数千名使用 API in One 构建产品的开发者。
"Switched from managing 6 different API keys to just one. API in One saved our team at least 10 hours a month on billing and key management alone."
"The unified billing is a game-changer. No more juggling credit cards across OpenAI, Stability, and ElevenLabs. One invoice, one balance."
"We swapped from Flux to Kling for image gen by changing one string in our request body. Zero downtime, zero code changes. Incredible."
"As a solo developer, I was spending more time on API integrations than on my actual product. API in One let me focus on what matters."
"Switched from managing 6 different API keys to just one. API in One saved our team at least 10 hours a month on billing and key management alone."
"The unified billing is a game-changer. No more juggling credit cards across OpenAI, Stability, and ElevenLabs. One invoice, one balance."
"We swapped from Flux to Kling for image gen by changing one string in our request body. Zero downtime, zero code changes. Incredible."
"As a solo developer, I was spending more time on API integrations than on my actual product. API in One let me focus on what matters."
"The response format is consistent across all models. Image, video, music — same JSON structure. My error handling code dropped by 60%."
"We use the video generation API for our marketing tool. Kling through API in One has been rock solid. 99.9% uptime is not just marketing talk."
"The free credits on signup let me prototype my entire AI art app before spending a single dollar. That kind of developer trust is rare."
"Latency is impressively low. The gateway adds almost nothing on top of the model providers own response time. Our users cant tell the difference."
"The response format is consistent across all models. Image, video, music — same JSON structure. My error handling code dropped by 60%."
"We use the video generation API for our marketing tool. Kling through API in One has been rock solid. 99.9% uptime is not just marketing talk."
"The free credits on signup let me prototype my entire AI art app before spending a single dollar. That kind of developer trust is rare."
"Latency is impressively low. The gateway adds almost nothing on top of the model providers own response time. Our users cant tell the difference."
"Music generation through Suno via API in One is seamless. We built a custom jingle generator for our clients in under a week."
"I compared costs: subscribing to 5 AI platforms individually vs. API in One credits. Saved roughly 40% on our monthly AI spend."
"The documentation is clean and the curl examples work out of the box. I had my first image generated within 3 minutes of signing up."
"We run a SaaS with 10K+ users hitting AI models daily. The intelligent routing means our app stays responsive even during provider outages."
"Music generation through Suno via API in One is seamless. We built a custom jingle generator for our clients in under a week."
"I compared costs: subscribing to 5 AI platforms individually vs. API in One credits. Saved roughly 40% on our monthly AI spend."
"The documentation is clean and the curl examples work out of the box. I had my first image generated within 3 minutes of signing up."
"We run a SaaS with 10K+ users hitting AI models daily. The intelligent routing means our app stays responsive even during provider outages."
"OpenAI-compatible format was the selling point for us. We migrated our existing ChatGPT integration to also use Gemini without touching a single endpoint."
"Text-to-speech quality through ElevenLabs API is identical to calling them directly. No quality loss, but way simpler auth and billing."
"The task polling system for async jobs (video, music) is elegant. One GET endpoint, works the same regardless of which model generated the content."
"Enterprise reliability that feels indie-developer friendly. Best of both worlds. Our CTO approved it in one meeting after seeing the docs."
"OpenAI-compatible format was the selling point for us. We migrated our existing ChatGPT integration to also use Gemini without touching a single endpoint."
"Text-to-speech quality through ElevenLabs API is identical to calling them directly. No quality loss, but way simpler auth and billing."
"The task polling system for async jobs (video, music) is elegant. One GET endpoint, works the same regardless of which model generated the content."
"Enterprise reliability that feels indie-developer friendly. Best of both worlds. Our CTO approved it in one meeting after seeing the docs."