Free {family} model via API
AI21's Jamba models use a hybrid Mamba-Transformer MoE architecture with long context windows.
1 model1 providerbest: Jamba 1.5 LargeUpdated:
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The table refreshes hourly from aggregator APIs. The same model at different providers is a separate endpoint with its own limits.
Benchmarks: Artificial Analysis (September 24, 2026). A dash means the model is not on their leaderboard; we never estimate scores ourselves.
About Jamba
AI21 Labs · open weights
AI21's Jamba models use a hybrid Mamba-Transformer MoE architecture with long context windows.
FAQ
Which Jamba models are free?
Currently 1 model are free: Jamba 1.5 Large.
Where can I get a free Jamba API key?
Free Jamba routes are available at: NVIDIA Build. Get a key in the provider's dashboard; links are on each model card.
Who develops Jamba?
AI21's Jamba models use a hybrid Mamba-Transformer MoE architecture with long context windows.