Organization
Model explorer

AI21 Labs

5 tracked models · 3 families: Jamba · AI21 Jamba · AI21 Jurassic
ReleasedModelParamsCtxElo
Jan 2026Jamba2 MiniOPEN52B·12Ba256K1933.4Aug 2024AI21 Jamba 1.5 LargeOPEN398B·94Ba256K777.9Aug 2024AI21 Jamba 1.5 MiniOPEN52B·12Ba256K553.6Mar 2024AI21 JambaOPEN52B·12Ba256K302.4Mar 2023AI21 Jurassic-2 (Ultra)CLOSED—8K51.9
Release cadence
Tracked releases per quarter
1
'23 Q1
1
'24 Q1
2
'24 Q3
1
'26 Q1