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The Surfaces of Kimi: Where It Lives
A complete map of every Kimi surface and which one to use for each task.
What You Will Learn
- Name every surface where Kimi is available.
- State which surface is best for each task type.
- Explain the difference between web, mobile, and API access.
- Choose the right surface based on context and file size.
- Recognize surface overlaps and when to switch.
Why This Matters
Most beginners discover the Kimi web app and stop there. That leaves real value on the table, because Kimi is also available as a mobile app, a mini-program inside WeChat, an API for developers, and a voice-capable assistant. Each surface has different strengths: the web app handles the largest files, the mobile app handles voice and on-the-go photos, the WeChat mini-program fits existing Chinese workflow, and the API enables programmatic use. Knowing which surface to reach for saves time and prevents frustration.
Concept Explained
Kimi is exposed through five primary surfaces. The web app at kimi.com is the flagship: full context window, file uploads up to 50 MB per file, multi-file chat, web search, and the most reliable experience. The Kimi mobile app (iOS and Android) mirrors most web features and adds voice input, camera-based image understanding, and offline draft composition. The WeChat mini-program lets users chat with Kimi inside WeChat, which is the dominant messaging platform in China; it has tighter file-size limits but unbeatable convenience for that audience. The Moonshot AI API (platform.moonshot.cn) exposes the same underlying models to developers building their own applications, with billing based on token usage. Finally, Kimi is embedded in select partner products — for example, some e-readers and productivity tools integrate Kimi as an assistant.
How It Works
When you type a prompt into any Kimi surface, the surface packages your input plus any attached files and sends it to Moonshot's backend. The backend selects the appropriate Kimi model variant, runs inference, streams the response back, and the surface renders it. The model is the same across surfaces — the difference is in what each surface lets you attach. The web app is the most permissive (large files, multi-file chat), the API gives you full programmatic control, and mobile adds voice and camera input that the web app does not.
Step-by-Step Tutorial
1. Open the web app
Go to kimi.com in your browser. Sign in or create a free account. This is the primary surface you will use throughout the course.2. Install the mobile app
On your phone, search 'Kimi' in the App Store (iOS) or the appropriate Android marketplace. Install the official Moonshot AI app. Sign in with the same account you used on the web.3. Try the WeChat mini-program (optional)
Inside WeChat, search the Kimi mini-program. Open it and send a message. Notice that the conversation is independent of your web app — they are separate surfaces with separate histories.4. Bookmark the API portal
Visit platform.moonshot.cn and create a developer account. You do not need to write code yet; just familiarize yourself with the dashboard where API keys are managed.5. Compare the same task on two surfaces
On the web, ask Kimi to summarize a long PDF. On mobile, photograph a page of the same PDF and ask the same question. Compare the answers and the friction of each path.Real-World Example
A lawyer preparing for trial uploaded a 200-page deposition transcript to the Kimi web app on her laptop, then left for court. During a recess, she opened the Kimi mobile app, found the same conversation in her history, and asked follow-up questions about specific testimony. The conversation continued seamlessly across devices, with the full transcript still in context. She then photographed a paper exhibit with her phone and asked Kimi to compare it to a passage in the deposition — a workflow that would have been impossible on a single surface.
Common Mistakes
- Using only the web app for everything, even on the go. Mobile is faster for voice and quick photo-based questions.
- Ignoring the API when you have repetitive tasks — if you upload the same template document ten times a week, you should automate.
- Confusing mini-program conversations with web conversations. They are separate; do not assume history syncs.
- Picking the mobile app for a 100-page PDF review. The small screen makes reading long answers painful.
- Switching surfaces mid-conversation unnecessarily. Each switch adds friction and risk of confusion.
Best Practices
- Default to the web app for any task involving large files or long answers.
- Use the mobile app for voice input, photos, and quick follow-ups while away from your desk.
- Use the WeChat mini-program when collaborating with colleagues who live inside WeChat.
- Use the API when you find yourself repeating the same prompt on different inputs.
- Keep conversation history in mind — pick the surface where the conversation started and stay there if possible.
Troubleshooting
| Problem | How to Fix |
|---|---|
| Conversation does not appear on another device | Make sure you are signed in with the same account on both devices. If still missing, refresh the history panel — there can be a short sync delay. |
| Mobile app crashes on large file upload | Use the web app for files larger than 20 MB. Mobile is optimized for smaller files and photos. |
| WeChat mini-program is missing features | The mini-program is intentionally simplified. Switch to the web app for long context, multi-file chat, or advanced features. |
| API key does not work | Check that you have billing enabled and that you are calling the correct endpoint (api.moonshot.cn/v1/chat/completions). Verify your key has not expired. |
Practical Exercise
Your Turn
List the last five tasks where you used an AI assistant. For each, identify which Kimi surface would have been optimal and why. If you cannot decide between two surfaces, that is itself a finding — note it and revisit after a week of using Kimi deliberately.
Key Takeaways
- Kimi is available on five surfaces: web (kimi.com), mobile (iOS/Android), WeChat mini-program, API, and partner integrations.
- Web app is the flagship surface with the largest file and context limits.
- Mobile app adds voice and camera input that the web does not have.
- API is for programmatic use and is billed per token.
- Pick the surface that matches your task — don't default to one for everything.
Frequently Asked Questions
Which Kimi surface should I start with?
Is the mobile app free?
Can I use the API for free?
Does Kimi work in WeChat?
Are conversations synced across surfaces?
Further Reading
Official References
SEO Metadata
SEO title: The Surfaces of Kimi: Where It Lives
Meta description: A complete map of every Kimi surface and which one to use for each task.
Primary keyword: kimi surfaces
Secondary keywords: kimi web app, kimi mobile app, kimi wechat mini program, moonshot api, kimi platforms
Search intent: Informational
URL slug: /kimi-surfaces-where-it-lives-map
Categories: AI Tools, Kimi
Tags: Kimi, Beginner, Surfaces, Web, Mobile, IMCSEIAN, Tutorial, Beginner, IMCSEIAN
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