which AI's are unfiltered and free to use

While there are several AI models and tools available for free use, most reputable platforms implement some level of filtering or moderation to ensure safety, compliance, and ethical use. However, here are some options that may be considered relatively "unfiltered" based on their design or intended use:

**OpenAI's GPT (via API)**: Although it may have guidelines for use, developers can access OpenAI's models through APIs, and the level of filtering may depend on how developers implement it.

**Hugging Face Transformers**: This library offers a variety of pre-trained AI models, including GPT-based models and others. Users can fine-tune their models and potentially customize the level of filtering.

**EleutherAI's GPT-Neo / GPT-J**: These are open-source language models that mimic the capabilities of GPT-3 and are available for anyone to use and modify, though they may not have built-in safety filters.

**Cohere**: Cohere provides natural language processing tools that people can use for various tasks, with some options available for free.

**Local AI installations**: Many models can be downloaded and run locally (like GPT-Neo or others), allowing full control over filtering and usage. However, the technical knowledge required might be a barrier for some users.

While these tools are generally accessible, users should always be mindful of ethical considerations and potential misuse. It's essential to follow the terms of service and guidelines provided by each platform.