What is Mamba?

Mamba is a state space model architecture for sequence modeling, described as a traditional state space model scaled up significantly.

• Dec 2025 - Jeff Beck described Mamba as a traditional state space model, essentially a common filter on steroids, scaled up, and noted that Mistral’s coding agent uses it and works well.
• Jul 2026 - Ramin Hasani stated that the most efficient architecture from a massive search space became the double gated convolution, which came out of Mamba.