There is https://www.rwkv.com/ https://www.rwkv.com/ which is an LLM based on RNN's, thus having "infinite" context length, it comes with its own tradebacks tho

There is https://www.rwkv.com/ https://www.rwkv.com/ which is an LLM based on RNN's, thus having "infinite" context length, it comes with its own tradebacks though. (Notably that its impossible to actually store infinite information in the network, so it prunes based on which information it finds more important.)