Recently discovered a few platforms that allow free online access to GPT-4, really a lifesaver! I was previously stuck because of GPT-4's high entry barrier; official permissions are too difficult to apply for.

First, let's talk about Vercel Playground. You need to apply for a 14-day Pro trial to unlock online GPT-4 experience, and the benefit is that it's completely free during the trial period—just remember to cancel before it expires, or it will automatically charge you. There's also the Poe app, a product under Quora, which gives one free GPT-4 message per day. It feels a bit limited, but if you have a US account, you can give it a try.

In my opinion, the most cost-effective is ForeFront. This tool supports role-playing and online image generation, and the key is that it allows 5 messages every 3 hours, which is the highest quota among similar services. I tested it, and the speed is slightly slower than the official site, but being able to experience GPT-4 online for free is pretty good.

Honestly, the token consumption cost of GPT-4 is really shocking—about 50-60 times more expensive than 3.5. These free quotas will eventually shrink. Currently, ChatGPT Plus (25 messages every 3 hours) seems to be the most stable solution. However, as AI competition intensifies, more products are likely to open up free GPT-4 online experience quotas to attract users, so it's worth keeping an eye on.