I have been using this service from time to time for several months. I usually turn to more advanced models, like GPT-4o, or to neural networks for creating music and videos. For simple tasks, I prefer DeepSeek or the basic version of GPT – they are available for free, like some other models. The prices in GPTunnel seem quite reasonable. There are no subscriptions; you only pay for what you actually use. Each model has its own pricing, which allows you to assess the costs for generation and choose the right option. The quality of generation is at a high level, and there is no doubt that the aggregator does not offer outdated versions as if they were new. I work through the web interface and do not use the API, as my requests are mostly one-time.
