Which needs less VRAM, AI21 Jamba Mini 1.5 or Hymba 1.5B Instruct?

At BF16, AI21 Jamba Mini 1.5 needs 113.5 GB and Hymba 1.5B Instruct needs 3.4 GB, so Hymba 1.5B Instruct is the lighter option to run locally.

What is the difference between AI21 Jamba Mini 1.5 and Hymba 1.5B Instruct?

AI21 Jamba Mini 1.5 is a 51.6B model from AI21 Labs, while Hymba 1.5B Instruct is a 1.5B model from NVIDIA. Compare their VRAM requirements above to see which fits your GPU or Mac.

AI21 Jamba Mini 1.5 vs Hymba 1.5B Instruct

Side-by-side comparison of VRAM requirements, quantization, context length, and hardware compatibility.

AI21 Jamba Mini 1.5

AI21 Labs · 51.6B

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Hymba 1.5B Instruct

NVIDIA · 1.5B

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Specifications

	AI21 Jamba Mini 1.5	Hymba 1.5B Instruct
Parameters	51.6B	1.5B
Context	—	8K
Architecture	—	HymbaForCausalLM
License	Other	Other
Downloads	10.0K	454
Released	Feb 2026	Jan 2025

VRAM by Quantization: AI21 Jamba Mini 1.5 vs Hymba 1.5B Instruct

Quantization	Bits	AI21 Jamba Mini 1.5 VRAM	Hymba 1.5B Instruct VRAM
BF16	16.00	113.5 GB	3.4 GB

Verdict

Hymba 1.5B Instruct needs less VRAM at BF16 (3.4 GB vs 113.5 GB), so it fits on smaller GPUs. AI21 Jamba Mini 1.5 is the more widely downloaded of the two.

Frequently Asked Questions

Which needs less VRAM, AI21 Jamba Mini 1.5 or Hymba 1.5B Instruct?: At BF16, AI21 Jamba Mini 1.5 needs 113.5 GB and Hymba 1.5B Instruct needs 3.4 GB, so Hymba 1.5B Instruct is the lighter option to run locally.
What is the difference between AI21 Jamba Mini 1.5 and Hymba 1.5B Instruct?: AI21 Jamba Mini 1.5 is a 51.6B model from AI21 Labs, while Hymba 1.5B Instruct is a 1.5B model from NVIDIA. Compare their VRAM requirements above to see which fits your GPU or Mac.