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AI has permeated every aspect of our work and entertainment. Whether it's the big three of OpenAI, Gemini, and Claude abroad, or domestic players like DeepSeek, Zhipu AI, Tongyi Qianwen, and Kimi, various manufacturers offer powerful AI models.

However, one headache is that we need to register an account and even bind a payment method for each platform's model we use. Want to use ChatGPT? You need an OpenAI account. Want to experience Gemini? You need a Google account.

Of course, there are also some AI aggregation platforms on the market, such as Alibaba Cloud's Bailian and ByteDance's Volcano Engine. But they mainly focus on their own models and lack top foreign models. Silicon Flow provides some foreign models, but it is not comprehensive and lacks popular choices such as OpenAI and Claude.

Is there a platform that can provide both domestic and foreign mainstream AI models and is convenient for domestic users? The answer is yes, that is OpenRouter.ai!

OpenRouter.ai advantages:

  • Direct access in China, stable speed: No special network environment is required for smooth use.
  • Complete models: Includes mainstream AI models at home and abroad, including OpenAI, Google, Claude, Deepseek, Qwen, etc.
  • Free quota: Provides a daily free request quota, allowing you to easily experience various models.

1. Free Registration and Login

Visit the OpenRouter.ai official website: https://openrouter.ai

  • If you have a Google account, you can log in directly with your Google account.
  • If not, click "Sign up" to register with your email.

Registration and Login

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After registering, open your email and click the link in the email to verify your email, then you can log in.

2. Create API Key

After logging in, go to the API key management page: https://openrouter.ai/settings/keys

Create API Key

Click "Create Key" to create a new API key.

Create

Copy the generated API key and keep it safe.

Copy API Key

3. Explore Free Models

Visit the OpenRouter.ai model list page: https://openrouter.ai/models

Filter out all free models as shown below.

Filter Free Models

You will see many models with the (free) label, which are free to use, including the full version of DeepSeek:R1.

Free Model List

Free Quota Description:

OpenRouter.ai provides each user with a daily free request quota of 200 times.

Free Quota

4. Use OpenRouter.ai to Replace OpenAI

Select a model you are interested in and copy the Model Name.

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Now, you can use OpenRouter.ai in any application or code that supports the OpenAI API format in the following ways:

  • API Address: https://openrouter.ai/api/v1
  • API Key (SK): The OpenRouter.ai API key you copied earlier
  • Model Name: The model name you just copied

5. Special Recommendation: Free Experience of Full Version DeepSeek-R1

OpenRouter.ai also provides a special model: deepseek/deepseek-r1:free

Visit: https://openrouter.ai/deepseek/deepseek-r1:free

DeepSeek-R1

This is a full version of the DeepSeek-R1 inference model, which is completely free to call!

6. Example: Using OpenRouter.ai in pyVideoTrans

Taking pyVideoTrans, a video translation software, as an example, demonstrate how to use OpenRouter.ai in a practical application:

  1. Open the software and go to "Menu" -> "OpenAI ChatGPT API".
  2. Fill in the "API URL" with: https://openrouter.ai/api/v1
  3. Fill in the "SK" with your OpenRouter.ai API key.
  4. Paste the model name you copied in "Fill in all available models".
  5. Click "Save".

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