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AI Atlas
Family

Jamba

All 12 models in the terminal →

data quality35

first seen 11 Sept 2026

family_01M2A55TYWM29B4SYNS85TD3ZY

Models
12
First release
28 Mar 2024
Latest release
5 Oct 2025
Parameters
127.7M – 398.6B
Artifacts
3
Providers
0

Releases

Family releases by statusActiveApr 24May 24Jun 24Jul 24Aug 24Sept 24Oct 24Nov 24Dec 24Jan 25Feb 25Mar 25Apr 25May 25Jun 25Jul 25Aug 25Sept 25Oct 25Jamba-v0.1 — 28 Mar 2024Jamba-tiny-random — 17 Apr 2024AI21-Jamba-Large-1.5 — 19 Aug 2024AI21-Jamba-Mini-1.5 — 19 Aug 2024Jamba-tiny-dev — 3 Sept 2024Jamba-tiny-reward-dev — 5 Dec 2024AI21-Jamba-Large-1.6 — 27 Feb 2025AI21-Jamba-Mini-1.6 — 27 Feb 2025AI21-Jamba-Mini-1.7 — 1 Jul 2025AI21-Jamba-Large-1.7 — 2 Jul 2025AI21-Jamba-Reasoning-3B — 5 Oct 2025

11 dated releases · dot size = best benchmark rank of the member · 1 member without a sourced release date not shown

Members 12

Family members
ModelParamsContextOpennessLicenceReleasedStatusBest rankCompare
AI21-Jamba-Reasoning-3BAI21 Labs3.2B—Open weightsApache-2.05 Oct 2025Active—
AI21-Jamba-Large-1.7AI21 Labs398.6B—Open weightsOther2 Jul 2025Active—
AI21-Jamba-Mini-1.7AI21 Labs51.6B—Open weightsOther1 Jul 2025Active—
AI21-Jamba-Large-1.6AI21 Labs398.6B—Open weightsOther27 Feb 2025Active—
AI21-Jamba-Mini-1.6AI21 Labs51.6B—Open weightsOther27 Feb 2025Active—
Jamba-tiny-reward-devAI21 Labs318.7M—Open weightsApache-2.05 Dec 2024Active—
Jamba-tiny-devAI21 Labs318.7M—Open weightsApache-2.03 Sept 2024Active—
AI21-Jamba-Large-1.5AI21 Labs398.6B—Open weightsOther19 Aug 2024Active—
AI21-Jamba-Mini-1.5AI21 Labs51.6B—Open weightsOther19 Aug 2024Active—
Jamba-tiny-randomAI21 Labs127.7M—Open weightsApache-2.017 Apr 2024Active—
Jamba-v0.1AI21 Labs51.6B—Open weightsApache-2.028 Mar 2024Active—
jamba-reasoning-3bAI21 Labs—262KOpen weights——Active#139 IFBench

Lineage among members 0 relations

Open in Graph →

No lineage relation recorded among these members.

Benchmark progress

Benchmark progress needs at least two dated members with a rank on the same benchmark. Ranks (not scores) are what the family endpoint provides.

Aggregates are computed from the members' sourced claims; members without a release date or parameter count are left out of the range and timeline rather than guessed. Methodology →