is there a free unrestricted ai agent?

As of my last knowledge update in October 2021, there are several AI tools and platforms that offer free versions or tiers, but "unrestricted" access can vary widely depending on the platform's policies, terms of service, and ethical guidelines. Here are some options that might be relevant:

**GPT-3 Playground**: OpenAI provides limited access to its GPT-3 model through the OpenAI Playground, though usage is generally capped and subject to compliance guidelines.

**Hugging Face**: This platform has a variety of open-source AI models, including conversational agents, that you can use freely with some computational limitations.

**local AI models**: Models like GPT-2 or smaller versions can be downloaded and run on your own hardware, providing unrestricted usage as long as you comply with their licensing agreements.

**Rasa**: An open-source framework for building conversational AI applications that you can freely deploy and customize.

**Chatbot Platforms**: Some platforms offer free tiers for building chatbots, though they might have usage limits or feature restrictions.

Always check the specific terms of service and usage policies, as "unrestricted" could still imply certain limitations or guidelines. Additionally, be cognizant of ethical considerations when deploying AI technologies.