Will It Run AI

Can Codestral 21B Pruned i1 run on MacBook Pro M4 Max 48GB?

YES — Runs Great

C52Usable
Estimated from fit model

Codestral 21B Pruned i1 needs ~21.4 GB VRAM. MacBook Pro M4 Max 48GB has 34.6 GB. With Q4_K_M quantization, expect ~35 tok/s.

Runtime: llama.cppCapacity: RoomyBandwidth: MediumStack: StandardBottleneck: Balanced
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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) 21.4 GB, 35.2 tok/s, Runs well
21.4 GB required34.6 GB available
62% VRAM used

Fit status

Runs well

Decode

35.2 tok/s

TTFT

5506 ms

Safe context

102K

Memory

21.4 GB / 34.6 GB

Memory breakdown

Weights12.8 GB
KV Cache2.5 GB
Runtime0.9 GB
Headroom5.2 GB

See how fast it feels

See how fast it feelsCodestral 21B Pruned i1 on MacBook Pro M4 Max 48GB
1st promptCold start — includes initialization
>Write a Python function to sort a list
Here's a Python function that sorts a list using quicksort: def quicksort(arr): if len(arr) <= 1: return arr pivot = arr[len(arr) // 2] left = [x for x in arr if x < pivot] middle = [x for x in arr if x == pivot] right = [x for x in arr if x > pivot] return quicksort(left) + middle + quicksort(right) # Example usage numbers = [3, 6, 8, 10, 1, 2, 1] print(quicksort(numbers)) # [1, 1, 2, 3, 6, 8, 10] The algorithm picks a pivot, partitions the list into smaller, equal, and larger elements, then recursively sorts each partition and concatenates the results.
2nd promptWarm — model ready, no init overhead
>Now add type hints and a docstring
def quicksort(arr: list[int]) -> list[int]: """Sort a list using the quicksort algorithm. Args: arr: List of integers to sort. Returns: A new sorted list. """ if len(arr) <= 1: return arr pivot = arr[len(arr) // 2] left = [x for x in arr if x < pivot] middle = [x for x in arr if x == pivot] right = [x for x in arr if x > pivot] return quicksort(left) + middle + quicksort(right) Added type hints for the input and return type, plus a Google-style docstring.
Estimated: 35.2 tok/s decode · 5.5s TTFT (warm) · 88 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

WorkloadGradeFitDecodeTTFTContext
ChatCRuns well35.2 tok/s3003 ms102K
CodingCRuns well35.2 tok/s5506 ms102K
Agentic CodingCRuns well35.2 tok/s8008 ms102K
ReasoningCRuns well35.2 tok/s6507 ms102K
RAGCRuns well35.2 tok/s10010 ms102K

Quantization options

How Codestral 21B Pruned i1 (21B params) fits at each quantization level on MacBook Pro M4 Max 48GB (34.6 GB usable).

QuantBitsVRAMQualityFit
Q2_K
2
8.2 GB
LowC44
Q3_K_S
3
10.3 GB
LowC45
NVFP4
4
11.8 GB
MediumC46
Q4_K_M
4
12.8 GB
MediumC46
Q5_K_M
5
15.1 GB
HighC47
Q6_K
6
17.2 GB
HighC48
Q8_0Best for your GPU
8
22.5 GB
Very HighC48
F16
16
43.1 GB
MaximumF0

Get started

Copy-paste commands to run Codestral 21B Pruned i1 on your machine.

Run

lms load hf-mradermacher--codestral-21b-pruned-i1-gguf && lms server start

Opções de upgrade

Hardware que roda bem Codestral 21B Pruned i1

Frequently asked questions

Can MacBook Pro M4 Max 48GB run Codestral 21B Pruned i1?

Yes, MacBook Pro M4 Max 48GB can run Codestral 21B Pruned i1 with a C grade (Runs well). Expected decode speed: 35.2 tok/s.

How much VRAM does Codestral 21B Pruned i1 need?

Codestral 21B Pruned i1 (21B parameters) requires approximately 21.4 GB of memory with Q4_K_M quantization.

What is the best quantization for Codestral 21B Pruned i1?

The recommended quantization for Codestral 21B Pruned i1 is Q4_K_M, which balances quality and memory efficiency.

What speed will Codestral 21B Pruned i1 run at on MacBook Pro M4 Max 48GB?

On MacBook Pro M4 Max 48GB, Codestral 21B Pruned i1 achieves approximately 35.2 tokens per second decode speed with a time-to-first-token of 5506ms using Q4_K_M quantization.

Can MacBook Pro M4 Max 48GB run Codestral 21B Pruned i1 for coding?

For coding workloads, Codestral 21B Pruned i1 on MacBook Pro M4 Max 48GB receives a C grade with 35.2 tok/s and 102K context.

What context window can Codestral 21B Pruned i1 use on MacBook Pro M4 Max 48GB?

On MacBook Pro M4 Max 48GB, Codestral 21B Pruned i1 can safely use up to 102K tokens of context. The model's official context limit is —, but available memory constrains the safe maximum.

Is unified memory on MacBook Pro M4 Max 48GB as fast as VRAM for Codestral 21B Pruned i1?

Not always. MacBook Pro M4 Max 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 Max 48GBSee all hardware for Codestral 21B Pruned i1
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