Jamba 1.5 Large and Mini: hybrid SSM-Transformer (Mamba) architecture providing ultra-efficient 256K long-context throughput.
2 models tracked · cheapest input: AI21 Jamba 1.5 Mini at $0.20/M · official pricing page
AI21's Jamba family uses hybrid SSM-Transformer architecture for ultra-efficient 256K long-context throughput.
jamba-1.5-large
Input /M
$2.00
Output /M
$8.00
Context
256K
Hybrid SSM-Transformer (Mamba) architecture: 398B total (94B active) delivering ultra-efficient 256K long-context throughput at $2.00/$8.00.
jamba-1.5-mini
Input /M
$0.20
Output /M
$0.40
Context
256K
52B total (12B active) hybrid Mamba model with 256K context at $0.20/$0.40 per 1M tokens.
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All AI21 Labs prices verified Aug 28, 2026. Prices change frequently — each model page links to the authoritative source.