This is the kind of question that pops up on Zhihu and Reddit every single month: Where on earth should I get my AI APIs?
Buying directly from official providers comes with three major hurdles: payment issues, network connectivity, and managing multiple accounts. Aggregator gateways solve all of these problems in one go.
Based on our hands-on experience, here is a roundup of 5 options worth trying, categorized by use case so you can find the perfect fit.
1. 4ALL API (4allapi.com) — The All-Round Workhorse
Access over 200 models with a single API key, covering everything from GPT, Claude, and Gemini chat to image and video generation. It features zero-migration OpenAI compatibility. With support for corporate invoicing, multiple payment methods, and project-based token splitting, it offers the most hassle-free experience for teams. The documentation is also very comprehensive: docs.4allapi.com.
2. 4All API (4allapi.com) — Developer-Friendly
The most “engineer-oriented” option among its sister sites. It features detailed documentation and complete code examples (the Python/Node/curl trio). Advanced features like inference tiers and prompt caching billing are clearly explained on dedicated pages. This is the fastest way for solo developers to get up and running.
3. OmniAPI (omniapi.co) — Robust Image and Video Capabilities
This is your go-to option for generating images and videos. It supports the entire GPT-Image series (2K/4K), Nano Banana, VEO 3.1, and the Omni Flash video series. It features a unified asynchronous task protocol and pay-per-use billing with refunds for failed tasks, making it ideal for businesses doing bulk content generation.
4. TokenNode (tokennode.ai) — Coming Soon
A new member of the same family, focusing on transparent token-level billing for cost-conscious, high-volume users. The site hasn’t officially launched yet, but you can bookmark it now to catch their launch promotions.
5. OpenRouter (openrouter.ai) — The Established Global Player
An established aggregator in the international market, featuring a vast model marketplace and an active community. However, its drawbacks are very real for users in China: payments require overseas cards, direct network connections can be unstable, and there is virtually no Chinese-language support. It is best suited as a backup channel for teams with overseas payment capabilities.
How to Choose
- For Companies/Teams: 4ALL API, where invoicing and token management are essential;
- For Solo Developers: 4All API, where you can get up and running in half an hour by following the docs;
- For AIGC Content Businesses: OmniAPI, where image and video generation are their strong suits;
- Whichever you choose, it is highly recommended to make the model names configurable and keep a backup gateway as a fallback—this is a fundamental best practice for multi-model architectures.