How to use Qwen3 for free?
Just now, China’s Alibaba group has released the third series of Qwen models, Qwen3, with six variants ranging from 0.6B to 235B.
https://medium.com/media/339217de3362ff62df68d8d21c19c25c/href
There are different ways in which the model can be used for free, as the model weights are open-sourced. Hence, all 8 variants can be used without paying a single penny.
https://medium.com/media/bc9880f1f348c80c3248033a2ad79f15/href
Not just the model weights, even the API is free. In this post, I will be explaining to you how you can use Qwen3 models for free using a free API key, using OpenRouter
Data Science in Your Pocket – No Rocket Science
Go to OpenRouter
Search for Qwen3
Click on the model which you wish to use (say Qwen3 32B)
Scroll down, you should see a Create API section
Take the API and use the code below to get started
import requests
import json
response = requests.post(
url="https://openrouter.ai/api/v1/chat/completions",
headers={
"Authorization": "Bearer <OPENROUTER_API_KEY>",
"Content-Type": "application/json",
"HTTP-Referer": "<YOUR_SITE_URL>", # Optional. Site URL for rankings on openrouter.ai.
"X-Title": "<YOUR_SITE_NAME>", # Optional. Site title for rankings on openrouter.ai.
},
data=json.dumps({
"model": "qwen/qwen3-32b:free",
"messages": [
{
"role": "user",
"content": "What is the meaning of life?"
}
],
})
)
https://medium.com/media/7d45ba5464b696155af92aeca7bb544e/href
That’s it. Now, you can use the SOTA open-sourced model, Qwen3 for free using an API as well.
Hope you try it out !
Qwen3 Free API was originally published in Data Science in Your Pocket on Medium, where people are continuing the conversation by highlighting and responding to this story.
