← open-weight

Jamba 1.5 Large

AI21 Labs · Israel
SSM-Transformer hybrid (Mamba) with 256K context. Jamba Open Model License permits commercial use below $50M annual revenue; above that, paid licence required. Israel jurisdiction; EU adequacy decision in place.
Licence facts
Licence
Jamba Open Model License
Commercial use
Below $50M annual revenue
Derivatives
Allowed
Attribution
Required
Parameters
398B MoE (94B active)
Context
256K
Training data
Not disclosed
Last updated
2024-Q3
Known risks
  • Revenue-based commercial cap requires tracking
  • Hybrid architecture less battle-tested than pure Transformer
  • Training data undisclosed
Sources
→ Model card→ JOML
Reviewed by Ali Madjaji · Last reviewed 2026-04-15
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