Kimi
1 million token context — upload entire books and research papers in one conversation.
Quick Specs
| Developer | Moonshot AI |
| Headquarters | Beijing, China |
| Category | Writing & Chat |
| Pricing | Freemium |
| Free Tier | Free with usage limits |
| Auth Method | Chinese phone number or WeChat |
| API Available | ✅ Yes |
| Format | Web, mobile app, API |
| China Access | ✅ Works in China |
| Last checked | July 2026 |
What Is Kimi?
Kimi is the flagship product of Moonshot AI, a Beijing-based AI lab founded in 2023. Kimi's defining feature is its context window: initially 200K tokens (one of the longest available when launched), expanded to 1 million tokens in 2024, allowing users to process entire books, large codebases, or extensive document collections in a single conversation.
Kimi handles both Chinese and English at high quality, making it one of the few models that genuinely competes with international frontier models on English-language tasks while remaining fully accessible in China. The long context capability makes it particularly valuable for researchers, lawyers, and analysts working with large document sets.
The product is free for Chinese users through the Kimi website and mobile app. An API is available through Moonshot AI's developer platform (platform.moonshot.cn). Kimi's quality is generally rated above Ernie Bot and Doubao for English-language tasks and complex reasoning.
Key Features
Kimi Pricing (2026)
Free
Free- ✓ 1M context
- ✓ Chinese and English
- ✓ Document upload
- ✓ Usage limits apply
Best for: Individual users
Pro
~¥99/mo- ✓ Higher usage limits
- ✓ Priority access
- ✓ Latest model
Best for: Heavy users, professionals
API
Pay per token- ✓ Developer access
- ✓ 1M context via API
- ✓ Commercial use
Best for: Developers and businesses
Kimi: Pros & Cons
+ Pros
- ✓1 million token context window
- ✓Works in China (no VPN needed)
- ✓Strong English and Chinese quality
- ✓Free tier available
- ✓Long document analysis
− Cons
- ✗Chinese phone required for main product
- ✗Less well-known internationally
- ✗Model lags GPT-4o on complex reasoning
- ✗Slower than some competitors at long contexts
Best Use Cases for Kimi
Long document analysis
Upload entire contracts, research papers, or technical reports and ask questions across the full document.
Codebase review
Paste an entire codebase and ask Kimi to explain the architecture or find issues — context handles large projects.
Research synthesis
Upload multiple academic papers and ask Kimi to synthesize findings, compare methodologies, and identify gaps.
How to Get Started with Kimi
- 1
Go to kimi.moonshot.cn
- 2
Register with Chinese phone or WeChat
- 3
Start a new conversation
- 4
Upload documents (PDF, Word, text) or type directly
- 5
For API access, visit platform.moonshot.cn
✅ Works in China: Kimi in China
Kimi is accessible from mainland China without a VPN.