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LLMs ·

Jamba Reasoning 3B

Parameters
3.2B
Architecture
Dense
Max context
256K tokens
License
apache-2.0
Released
2025-10

How to run it

Quantized files · GGUF

Works in LM Studio, llama.cpp, Jan and Ollama. No sign-in needed.

huggingface.co/ai21labs/AI21-Jamba-Reasoning-3B-GGUF (opens in a new tab)

ollama run hf.co/ai21labs/AI21-Jamba-Reasoning-3B-GGUF

Original weights · Hugging Face

Full-precision files from AI21 Labs, for fine-tuning, vLLM, Transformers.

huggingface.co/ai21labs/AI21-Jamba-Reasoning-3B (opens in a new tab)

No sign-in needed.

Links checked 5 days ago against Hugging Face, Ollama and GitHub.

Memory needed

Weights plus KV cache and runtime overhead. Leave a little extra free for the operating system and other apps.

KV cache: hybrid Mamba-Transformer: only the attention layers keep a KV cache.

Quantization Quality Weights Total at 8K context Total at 32K context Download
Q2_K Low 1.3 GB 1.9 GB 1.9 GB GGUF files (opens in a new tab)
Q3_K_M Low 1.6 GB 2.2 GB 2.2 GB GGUF files (opens in a new tab)
Q4_K_M Good 2.0 GB 2.6 GB 2.6 GB GGUF (opens in a new tab)
Q5_K_M High 2.3 GB 2.9 GB 2.9 GB GGUF files (opens in a new tab)
Q6_K High 2.6 GB 3.2 GB 3.3 GB GGUF files (opens in a new tab)
Q8_0 Very high 3.4 GB 4.0 GB 4.0 GB GGUF files (opens in a new tab)
F16 Full 6.4 GB 7.0 GB 7.0 GB GGUF (opens in a new tab) Original weights (opens in a new tab)

Best hardware for Jamba Reasoning 3B

The least expensive GPU in our catalog that runs it without offloading is the Intel Arc A380 (launch price $139) at Q5_K_M.

Grade · points Hardware Quant Memory Speed Fit
74 ptsGreat (A) · 74 of 100 points: Model quality 19.8/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 14.6/15 NVIDIA GeForce RTX 4070 SUPER F16 7.6 GB / 12.0 GB 45.4 tok/s Runs well
72 ptsGreat (A) · 72 of 100 points: Model quality 19.8/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 12.7/15 NVIDIA GeForce RTX 4060 Q8_0 4.4 GB / 8.0 GB 53.1 tok/s Runs well
71 ptsGood (B) · 71 of 100 points: Model quality 19.8/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 11.3/15 AMD Radeon RX 9070 XT F16 7.8 GB / 16.0 GB 49.6 tok/s Runs well
71 ptsGood (B) · 71 of 100 points: Model quality 19.8/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 11.3/15 NVIDIA GeForce RTX 4070 Ti SUPER F16 7.8 GB / 16.0 GB 60.5 tok/s Runs well
71 ptsGood (B) · 71 of 100 points: Model quality 19.8/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 11.3/15 NVIDIA GeForce RTX 4080 SUPER F16 7.8 GB / 16.0 GB 66.2 tok/s Runs well
71 ptsGood (B) · 71 of 100 points: Model quality 19.8/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 11.3/15 NVIDIA GeForce RTX 5060 Ti 16GB F16 7.8 GB / 16.0 GB 40.3 tok/s Runs well
71 ptsGood (B) · 71 of 100 points: Model quality 19.8/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 11.3/15 NVIDIA GeForce RTX 5070 Ti F16 7.8 GB / 16.0 GB 80.6 tok/s Runs well
71 ptsGood (B) · 71 of 100 points: Model quality 19.8/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 11.3/15 NVIDIA GeForce RTX 5080 F16 7.8 GB / 16.0 GB 86.4 tok/s Runs well
68 ptsGood (B) · 68 of 100 points: Model quality 19.8/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 8.8/15 Intel Arc B580 Q8_0 4.6 GB / 12.0 GB 68.0 tok/s Runs well
68 ptsGood (B) · 68 of 100 points: Model quality 19.8/45, Memory fit 25.0/25, Speed 15.0/15, Memory use 8.8/15 NVIDIA GeForce RTX 3060 12GB Q8_0 4.6 GB / 12.0 GB 70.3 tok/s Runs well

Check it on your own hardware

Estimates come from published hardware specs and our open formulas, not from running the model on your machine. Real speed varies with runtime, drivers and settings. Numbers marked “Measured” come from a linked benchmark.