AI21 Jamba Mini 1.5 vs AI21 Jamba Reasoning 3B
Side-by-side comparison of VRAM requirements, quantization, context length, and hardware compatibility.
Specifications
| AI21 Jamba Mini 1.5 | AI21 Jamba Reasoning 3B | |
|---|---|---|
| Parameters | 51.6B | 3.2B |
| Context | — | 262K |
| Architecture | — | JambaForCausalLM |
| License | Other | Apache 2.0 |
| Downloads | 10.0K | 2.9K |
| Released | Feb 2026 | Oct 2025 |
VRAM by Quantization: AI21 Jamba Mini 1.5 vs AI21 Jamba Reasoning 3B
| Quantization | Bits | AI21 Jamba Mini 1.5 VRAM | AI21 Jamba Reasoning 3B VRAM |
|---|---|---|---|
| BF16 | 16.00 | 113.5 GB | 6.7 GB |
Verdict
AI21 Jamba Reasoning 3B needs less VRAM at BF16 (6.7 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 AI21 Jamba Reasoning 3B?
At BF16, AI21 Jamba Mini 1.5 needs 113.5 GB and AI21 Jamba Reasoning 3B needs 6.7 GB, so AI21 Jamba Reasoning 3B is the lighter option to run locally.
- What is the difference between AI21 Jamba Mini 1.5 and AI21 Jamba Reasoning 3B?
AI21 Jamba Mini 1.5 is a 51.6B model from AI21 Labs, while AI21 Jamba Reasoning 3B is a 3.2B model from AI21 Labs. Compare their VRAM requirements above to see which fits your GPU or Mac.