China AI API Keys Complete Guide (2026): DeepSeek, Kimi, Qwen, ERNIE & Doubao

China's AI API ecosystem has matured rapidly. Several platforms now offer production-grade language model APIs with competitive pricing, strong multilingual support, and OpenAI-compatible endpoints. The five major platforms are DeepSeek, Moonshot AI (Kimi), Alibaba Tongyi Qianwen, Baidu ERNIE, and ByteDance Doubao.

Each platform has distinct strengths: DeepSeek leads on cost-efficiency and reasoning, Kimi excels at ultra-long context processing, Qwen offers the broadest model variety, ERNIE has deep Chinese language understanding, and Doubao provides aggressive pricing for high-volume usage.

For international developers, DeepSeek and Moonshot are the most accessible — both accept international phone numbers and provide English documentation. Alibaba's Qwen models are also globally available through Alibaba Cloud International. Baidu and ByteDance primarily target the domestic Chinese market.

Here is a quick overview of each platform's key characteristics. For detailed setup instructions, refer to the dedicated guide for each provider.

DeepSeek offers OpenAI-compatible endpoints with DeepSeek-V3 for general chat and DeepSeek-R1 for advanced reasoning. It is known for extremely competitive pricing and global accessibility. For step-by-step instructions, see our guide on how to get a DeepSeek API key.

Moonshot AI provides the Kimi API with the Kimi K3 model, which supports an ultra-long context window of up to 256K tokens. Kimi is particularly strong in Chinese language tasks and long-document understanding. See our dedicated guide on how to get a Kimi API key.

Alibaba Tongyi Qianwen (Qwen) offers the widest range of models, from Qwen-Turbo to Qwen-Max, available through Alibaba Cloud's DashScope platform. Baidu ERNIE provides the ERNIE 4.0 and ERNIE Speed models through its Qianfan platform. ByteDance Doubao offers aggressive per-token pricing through the Volcano Engine platform.

Each platform has its own developer portal where you register, generate API keys, and manage billing. Below is a summary of the access points for all five platforms.

Chinese AI API platforms are generally more affordable than their international counterparts. Pricing is per million tokens, with input and output rates billed separately. DeepSeek and Doubao are the most cost-effective, while ERNIE 4.0 and Qwen-Max command higher prices for their premium capabilities.

DeepSeek-V3 offers some of the lowest per-token rates in the market. Moonshot's Kimi K3 is competitively priced for its long-context capabilities. Qwen offers tiered pricing from budget (Qwen-Turbo) to premium (Qwen-Max). ERNIE 4.0 is priced at a premium for its deep Chinese optimization. Doubao's pricing is aggressively low, targeting high-volume enterprise customers.

Most platforms also offer prompt caching discounts and free trial credits for new users. Always check the official pricing pages for the latest rates, as prices in the Chinese AI market change frequently.

Chinese AI APIs differ from international alternatives in several important ways beyond pricing. Understanding these differences helps you make an informed decision.

Registration requirements vary. DeepSeek and Moonshot accept international phone numbers, making them accessible to global developers. Alibaba Cloud International allows overseas users to access Qwen models. Baidu and ByteDance require Chinese phone numbers and real-name verification, which can be a barrier for international developers.

Payment methods are primarily domestic: Alipay and WeChat Pay are universally supported. DeepSeek and Alibaba Cloud International also support credit cards for international users. Documentation quality varies — DeepSeek and Moonshot provide English docs, while Baidu and ByteDance documentation is primarily in Chinese.

All five platforms provide OpenAI-compatible API endpoints, meaning you can use the standard OpenAI SDK with a different base URL. This significantly reduces migration effort if you are already using OpenAI's ecosystem.

The best platform depends on your specific needs. Here are practical recommendations based on common scenarios:

For cost-sensitive high-volume applications, DeepSeek and Doubao offer the best value. For long-context tasks like document analysis or codebase understanding, Kimi K3 with its 256K context window is the strongest choice. For the best Chinese language understanding, ERNIE 4.0 and Qwen-Max are top contenders.

For international developers, DeepSeek is the easiest to start with — global registration, English documentation, and OpenAI-compatible API. If you need a specific model's capability that is only available on a domestic platform, consider using a cloud intermediary or partnering with a China-based entity.

Many teams use multiple providers: for example, DeepSeek for general chat, Kimi for long-context tasks, and Qwen for multimodal applications. The OpenAI-compatible endpoints make it easy to switch between providers with minimal code changes.

If you are new to Chinese AI APIs, start with DeepSeek — it has the lowest barrier to entry for international developers. Register with your email or international phone number, add credits via credit card, and use the OpenAI SDK with a different base URL.

Take advantage of free trial credits offered by most platforms. This lets you evaluate model quality on your own tasks before committing to paid usage. Test with your actual prompts and data, not just generic benchmarks.

Monitor your API usage and costs regularly. Chinese platforms often have different billing cycles and minimum top-up amounts compared to international providers. Set up spending alerts where available.