[boywitharupee]

and is Griffin a state space model?

[imjonse]

No, it's a combination of RNN and Transformer.

[michwilinski]

I mean, SSMs are in fact under the hood RNNs

[VHRanger]

At the end of the day, either you carry around a hidden state, or you have a fixed window for autoregression.

You can call hidden states "RNN-like" and autoregressive windows "transformer-like", but apart from those two core paradigms I don't know of other ways to do sequence modelling.

Mamba/RWKV/Griffin are somewhere between those two extremes.