Jamba model releases

A source-backed timeline for the Jamba model family, collecting release dates, labs, access details, context windows, and major lifecycle changes.

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Jamba 1.5 Large

AI21

AI21

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2 models

Israel's AI21 hybrid Mamba-Transformer MoE, with a 256k context and strong long-document throughput.

First Jamba hybrid Transformer-Mamba MoE model with open weights and a 256K context length.