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UpdateUnverifiedAdded Sep 25, 2026

We’re excited to announce Jamba Reasoning 3B, a compact open-source reasoning model that redefines what’s possible on-device. Built on AI21 Labs’ novel SSM-Transformer hybrid architecture, this 3B-parameter model delivers 2–5× efficiency gains over competitors while achieving leading intelligence benchmarks .

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DateRelease
Oct 8Introducing Jamba Reasoning 3Bunverified
Update
Oct 8Key Highlightsunverified
Update
Oct 8Get Started:unverified
Update
Sep 18Deprecation Notice: tool_resources Parameterunverified
Deprecation
Sep 18What's New:unverified
Update
Nov 27Together AI Open-Source Models Now Available in AI21 Maestrounverified
Update
Nov 27What's New:unverified
Update
Nov 27Learn More:unverified
Update

Also shipped on Oct 8, 2025

in October 2025

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