Question: I'm looking for an AI platform that allows me to experiment with different models without a subscription fee.

If you're looking for an AI platform where you can try out different models without a subscription, Blend AI is a good candidate. It's a centralized hub that gives you access to a range of AI models, supports a variety of content formats, and uses a pay-as-you-go pricing model. That means you only pay for the resources and features you use, which can be a good way to try out different models.

Another good choice is Airtrain AI, a no-code compute platform geared for data teams that need to manage large data pipelines. It includes an LLM Playground for trying out more than 27 open-source and proprietary models, along with tools for fine-tuning and evaluating models. It's got a Pro plan at $200/month, but it's got a free Starter plan with limited features, so you can try it out for casual use.

If you're looking for a no-code option, Riku is worth a look. It lets you build, test and deploy AI applications without writing code, and you can use more than 40 large language models. The company offers a 5-day free trial, and its pricing tiers are tiered so you can pick the one that's right for you, with discounts if you pay annually.

Last, ChatPlayground is an interactive tool to try out many AI chatbot models like ChatGPT and Google Gemini. It's got features like a library of prompts, image generation, and support for multiple languages, all in a flexible and relatively inexpensive pricing plan geared for developers, data scientists and content creators.