Family Jamba · 52B parameters

Jamba 1.5 Mini

Hybrid SSM-Transformer + MoE 52B/12B active. 256k effective ctx. Jamba license (not OSI).

AI21 Labs·License Jamba Open Model License·Context 250k tokens·Output August 2024·Fits within the 128 GB of the GIGABYTE AI TOP ATOM← Catalog

01What it can do

Strengths
  • Effective 256k context
  • Unique hybrid
  • 9 languages
Limitations to know
  • —Custom Jamba license (not OSI)
  • —Partial llama.cpp support
  • —Superseded by Jamba 1.6/1.7
Architecture
Hybrid SSM-Transformer (Mamba+Attention) + MoE · 52B/12B active
Training
256k effective context (86% at 256k RULER).
Ideal for
Efficient long contextMamba hybrid

04Install

Install Ollama for your OS. Check the model and its quantization before downloading. Start with 4096 tokens of context, then check placement with ollama ps. A command below is not proof that a test was run on your machine.

$# HuggingFace : ai21labs/AI21-Jamba-Mini-1.5
⚠
First download: between 2 and 40 GB depending on the selected quantization. Plan for sufficient disk space; a stable connection is recommended. Subsequent launches are instant.

02Required memory

Approximate GPU VRAM required to run this model, including 4k tokens of context overhead. For a longer context, add ~1 GB per 8k-token increment.

Q4_K_M
The lightest, ~5% loss
30 GB
Q5_K_M
Good quality/size compromise
37 GB
Q8_0
Nearly indistinguishable from FP16
55 GB
FP16
Full precision — server use
104 GB
Fallback CPU · If you don't have a GPU, allow 48 GB of RAM minimum to run this model at reduced speed.

What hardware do you need for Jamba 1.5 Mini?

To run Jamba 1.5 Mini locally with Q4 quantization, you need about 30 GB of VRAM. An option to compare: GMKtec EVO-X2 64GB / 1TB (Ryzen AI Max+ 395) — leave some headroom for the system and context; check engine compatibility with the GPU.

Current offer: GMKtec EVO-X2 64GB / 1TB (Ryzen AI Max+ 395)
AmazonSee price →

Why this choice? Our complete guide on GMKtec EVO-X2 64GB / 1TB (Ryzen AI Max+ 395) →

Affiliate links — commission possible at no extra cost to you; independent recommendations. As an Amazon Associate, BestLLMfor earns from qualifying purchases.

This model in your private ChatGPT, without the cloud

Your private ChatGPT, free, on your own machine in an hour — LM Studio, Ollama, Open WebUI, your documents, no cloud.

  • Lifetime online access
  • PDF + files
  • Lifetime updates

03Expected speed

Tokens generated per second in Q4_K_M, 4k context. Beyond 20 t/s, reading is comfortable. Below 10 t/s, that's just for testing.

Entry-level
~6t/s
GTX 1650, RX 6600, MBA M2 8GB
Mid-range
~20t/s
RTX 4060, 4070, MBP M3 Pro
High-end
~50t/s
RTX 4090, M4 Max, Radeon 7900