Best local LLMs for 16GB VRAM

The short answer

Top picks for 16 GB: A.X-K2, Qwen3.5 9B, Qwen3.5 4B. 24 benchmarked models fit at Q4.

Fits = Q4_K_M + ~1.8 GB overhead ≤ 16 GB · updated every refresh

Ranked by measured benchmarks

#ModelScoreQ4 sizeHeadroomRun it
1A.X-K2
69GPQA
12 GB+2.2 GBsetup →
2Qwen3.5 9B
60GPQAMMLU
6 GB+8.2 GBsetup →
3Qwen3.5 4B
43GPQAMMLU
3 GB+11.2 GBsetup →
4Muse Glimmer
42AAArenaGPQA
10 GB+4.2 GBsetup →
5Ling 3.0 Tiny
32GPQA
5 GB+9.2 GBsetup →
6MiniCPM5-2B
27GPQA
1 GB+13.2 GBsetup →
7NVIDIA-Nemotron-Nano-9B-v2
27GPQAMMLU
5 GB+9.2 GBsetup →
8gpt-oss-20b
26ArenaGPQAMMLU
12 GB+2.2 GBsetup →
9Nemotron 3.5 Lightning
26AAGPQA
10 GB+4.2 GBsetup →
10Gemma 4 12B
24GPQA
7 GB+7.2 GBsetup →
11Mistral Small 4
24AAGPQA
8 GB+6.2 GBsetup →
12Qwen3-4B-Instruct-2507
21GPQAMMLU
2 GB+12.2 GBsetup →
13Phi-4
19ArenaGPQAMMLU
8.5 GB+5.7 GBollama run phi-4:14b
14Granite 4.2 3B
16AAArenaGPQA
2 GB+12.2 GBsetup →
15Olmo-3-7B-Think
15GPQA
4 GB+10.2 GBsetup →

Also fits, not benchmarked yet

Qwen3 14BSmolLM2-135MQwen2.5-Coder-14B-InstructNVIDIA-Nemotron-3-Nano-4B-BF16Qwen2.5-0.5BKimi-K3-DSparkMiniCPM5-2B-DSparkQwen2.5-14B-Instruct

GPUs with 16 GB–23 GB

Frequently asked

What is the best LLM for 16GB of VRAM?

By measured benchmarks, A.X-K2, Qwen3.5 9B, Qwen3.5 4B lead the models that fit 16 GB at Q4_K_M quantization.

How is "fits" decided?

A model fits when its Q4_K_M weights plus about 1.8 GB of runtime overhead (KV cache, activations) are at or under 16 GB. Long contexts need more; use the VRAM calculator for an exact figure.

How are the models ranked?

Each model's score averages the measured signals it has - Artificial Analysis index, LMArena rating, GPQA, MMLU-Pro - as percentiles across all chat models. Models without any measured benchmark are listed separately, not ranked.