No sign-in required. To test gpt-oss-20b, just enter a prompt into the text field and watch the model get to work. Again, hardware resources dictate model performance here.

As of March, any account holder can create images using GPT-4o in ChatGPT for free. See how to make ChatGPT work for your business.

GPT-5 was supposed to get rid of all the complicated AI models to choose from in ChatGPT, but that's not how it's panned out.