models · ai21

Jamba 1.6 Large

AI21 Jamba 1.6 Large — hybrid Mamba-transformer with 94B params and 256K context.

What this registry has checked

Quarantine. We hold the publisher’s own published hash for these weights and have recorded it against this entry. We have not downloaded and hashed the weights ourselves, so the hash is the publisher’s claim, not our measurement.

Weight file SHA-256	82d3120bd506dd7a5be61be2291accbb6d4acda357274ba39c8e04afb713aac1
Method	hf-published-sha256

Re-check this yourself → Source → Full record →

What is recorded

Publisher	ai21
Origin	Israel
Licence	Jamba-Open-Model
Publisher’s own licence statement	other
Parameters	398,555,145,696 (398.6B)
Native precision	BF16
Pulls recorded here	22,006
Downloads reported upstream	34

Reported scores

MMLU-Pro	56.5
GPQA Diamond	38.7
MATH-500	58
LiveCodeBench	17.2
Humanity's Last Exam	3.6

Reported by a third party and recorded here, not re-run by us. Source: artificialanalysis.ai/api/v2.

Elsewhere in the registry

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Registry record as of 2026-06-13. Identity, licence and parameter count are properties of a release and do not move; tier can, and the verify link above re-checks it against the live registry rather than this page.