Can CogVLM2 19B run on MacBook Pro M4 Pro 48GB?

YES — Runs Great

A83Great

Estimated — low-sample bucket· few comparable runs

CogVLM2 19B needs ~20.1 GB VRAM. MacBook Pro M4 Pro 48GB has 34.6 GB. With Q4_K_M quantization, expect ~24 tok/s.

Runtime: llama.cppCapacity: RoomyBandwidth: LowStack: StandardBottleneck: Balanced

Operating mode

Choose the run profile you care about

Interactive favors responsiveness, while light API and scale-out lean harder on serving readiness. The fit stays the same, but the recommendation lens changes.

Current mode

Balanced

Balanced for general local use. Keeps the ranking neutral across personal and serving workflows.

Capabilities:

Select quantization to explore

Q4_K_M (Medium quality) — 20.1 GB, 24.4 tok/s, Runs well

20.1 GB required34.6 GB available

58% VRAM used

Fit status

Runs well

Decode

24.4 tok/s

TTFT

7944 ms

Safe context

Memory

20.1 GB / 34.6 GB

Memory breakdown

Weights11.6 GB

KV Cache2.4 GB

Runtime0.9 GB

Headroom5.2 GB

See how fast it feels

See how fast it feelsCogVLM2 19B on MacBook Pro M4 Pro 48GB
1st promptCold start — includes initialization
>What is local AI inference?
Local AI inference means running an AI language model directly on your own hardware — your laptop, desktop, or server — instead of sending requests to a remote cloud API.

When you run inference locally the model weights are loaded into your GPU or unified memory. Each token you generate requires reading those weights from memory, so memory bandwidth is the main bottleneck for decode speed.

Key benefits of running locally:
  - Full privacy: your prompts never leave your machine
  - No per-token cost or rate limits
  - Works offline once the model is downloaded
  - Latency depends only on your hardware
2nd promptWarm — model ready, no init overhead
>How much VRAM do I need?
It depends on the model size and quantization level. A rough rule of thumb:

  Model size     Q4 (4-bit)    Q8 (8-bit)    FP16
  7B params      ~4.3 GB       ~7.5 GB       ~14 GB
  13B params     ~7.9 GB       ~13.9 GB      ~26 GB
  70B params     ~42.7 GB      ~74.9 GB      ~140 GB

Most people use 4-bit quantization (Q4_K_M) which gives 90-95% of full quality at a fraction of the memory. A 24 GB GPU can comfortably run most 7B-13B models.
Estimated: 24.4 tok/s decode · 7.9s TTFT (warm) · 61 tok/s prefill

What limits this setup

This setup is broadly balanced for this model.

Shared-memory contention still exists

The OS, browser, and inference runtime all compete for the same physical memory pool, so real-world headroom is less forgiving than raw capacity suggests.

Best improvement path

Performance by workload

Workload	Grade	Fit	Decode	TTFT	Context
Chat	A	Runs well	24.4 tok/s	4333 ms	8K
Coding	A	Runs well	24.4 tok/s	7944 ms	8K
Agentic Coding	A	Runs well	24.4 tok/s	11554 ms	8K
Reasoning	A	Runs well	24.4 tok/s	9388 ms	8K
RAG	A	Runs well	24.4 tok/s	14443 ms	8K

Quantization options

How CogVLM2 19B (19B params) fits at each quantization level on MacBook Pro M4 Pro 48GB (34.6 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	7.4 GB	Low	A77
Q3_K_S	3	9.3 GB	Low	A78
NVFP4	4	10.6 GB	Medium	A79
Q4_K_M	4	11.6 GB	Medium	A79
Q5_K_M	5	13.7 GB	High	A80
Q6_K	6	15.6 GB	High	A81
Q8_0Best for your GPU	8	20.3 GB	Very High	A82
F16	16	38.9 GB	Maximum	F0

Get started

Copy-paste commands to run CogVLM2 19B on your machine.

Run

docker run --rm -it ghcr.io/ggerganov/llama.cpp:full \
  --hf-repo "THUDM/cogvlm2-llama3-chat-19B" \
  --hf-file "cogvlm2-llama3-chat-19B-Q4_K_M.gguf" \
  -c 4096 -ngl 99

Your hardware

More models your MacBook Pro M4 Pro 48GB can run

Model	Params	Grade	Decode
Qwen3-Coder 30B A3B Instruct	30.5B	S	31.8 tok/s
Qwen 3.5 27B	27B	S	22.7 tok/s
Qwen 3.6 27B	27B	S	17.3 tok/s
Qwen 3.6 35B A3B	35B	S	29.4 tok/s
Qwen3-VL 30B A3B Instruct	30B	S	32.9 tok/s

Frequently asked questions

Can MacBook Pro M4 Pro 48GB run CogVLM2 19B?

Yes, MacBook Pro M4 Pro 48GB can run CogVLM2 19B with a A grade (Runs well). Expected decode speed: 24.4 tok/s.

How much VRAM does CogVLM2 19B need?

CogVLM2 19B (19B parameters) requires approximately 20.1 GB of memory with Q4_K_M quantization.

What is the best quantization for CogVLM2 19B?

The recommended quantization for CogVLM2 19B is Q4_K_M, which balances quality and memory efficiency.

What speed will CogVLM2 19B run at on MacBook Pro M4 Pro 48GB?

On MacBook Pro M4 Pro 48GB, CogVLM2 19B achieves approximately 24.4 tokens per second decode speed with a time-to-first-token of 7944ms using Q4_K_M quantization.

Can MacBook Pro M4 Pro 48GB run CogVLM2 19B for coding?

For coding workloads, CogVLM2 19B on MacBook Pro M4 Pro 48GB receives a A grade with 24.4 tok/s and 8K context.

What context window can CogVLM2 19B use on MacBook Pro M4 Pro 48GB?

On MacBook Pro M4 Pro 48GB, CogVLM2 19B can safely use up to 8K tokens of context. The model's official context limit is 8K, but available memory constrains the safe maximum.

Is unified memory on MacBook Pro M4 Pro 48GB as fast as VRAM for CogVLM2 19B?

Not always. MacBook Pro M4 Pro 48GB can often fit larger models thanks to unified memory, but a discrete GPU with dedicated high-bandwidth VRAM may still decode faster once the model fits. For this combination, the important distinction is capacity versus sustained throughput.

See all results for MacBook Pro M4 Pro 48GB See all hardware for CogVLM2 19B

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