MacBook Pro M5 Max (16-inch), 48GB vs Mac Studio M5 Max, 128GB for local AI
The Mac Studio M5 Max, 128GB holds 33 of the 39 open models here, and the MacBook Pro M5 Max (16-inch), 48GB holds 27. The MacBook Pro M5 Max (16-inch), 48GB costs $100 less. On Qwen3.8 27B, the strongest model both hold, they run at much the same speed: 25 and 25 tok/s, both estimated from memory bandwidth. The MacBook Pro M5 Max (16-inch), 48GB pays for itself sooner, in 62 years against 64 years at 500k tokens a day.
| MacBook Pro M5 Max (16-inch), 48GB | Mac Studio M5 Max, 128GB | |
|---|---|---|
| Price | $4,999 | $5,099 |
| Memory | 48 GB | 128 GB |
| Usable by the GPU | 36 GB | 96 GB |
| Memory bandwidth | 614 GB/s | 614 GB/s |
| Power under load | 145 Wstand-in | 145 Wstand-in |
| Models that fit | 27 | 33 |
| Best model it runs | Qwen3.8 27B | Qwen3.8 27B |
| Speed on that model | 25 tok/s estimated | 25 tok/s estimated |
| Pay-back on that model | Pays back in 62 years | Pays back in 64 years |
Neither power figure above is measured on the machine beside it. Both are stand-ins borrowed from the nearest hardware the data does have, so the two matching says nothing about either machine. Each machine's page names the figure it borrows and why. Every pay-back figure on this page prices its electricity from these numbers.
Run the numbers on the MacBook Pro M5 Max (16-inch), 48GB · or the Mac Studio M5 Max, 128GB
The same money, two different machines
These two cost within $100 of each other: $4,999 for the MacBook Pro M5 Max (16-inch), 48GB and $5,099 for the Mac Studio M5 Max, 128GB. Both are Apple machines, but a MacBook Pro and a Mac Studio are two different machines rather than two sizes of one. Every other head-to-head on this site holds a piece of the hardware equal and asks what the price gap buys. This one holds the price, so the row that usually carries the answer is the row the two machines agree on, and everything under it is what the same money buys twice.
How much use it takes to pay back
Everything above is at 500k tokens a day. Pay-back moves with how much you actually run, so here are both machines on Qwen3.8 27B, the strongest model both hold, at the five levels of use the calculator names. The MacBook Pro M5 Max (16-inch), 48GB pays back sooner at every level of use, so this is not a choice that turns on how hard you work it.
| A day's use | MacBook Pro M5 Max (16-inch), 48GB | Mac Studio M5 Max, 128GB |
|---|---|---|
| 50ka few chats a day | 624 years | 636 years |
| 200klight assistant use | 156 years | 159 years |
| 1Ma moderate coding-assistant day | 31 years | 32 years |
| 4Mheavy coding with an agent | 7.8 years | 8.0 years |
| 20Magents running most of the day | 19 months | 19 months |
Run the MacBook Pro M5 Max (16-inch), 48GB at 20M tokens a day · or the Mac Studio M5 Max, 128GB
What the extra memory buys
The Mac Studio M5 Max, 128GB holds 6 models the MacBook Pro M5 Max (16-inch), 48GB cannot at 32k of context. The strongest of them are what the difference in memory actually buys.
| Model | Weights | Needs at 32k | On the Mac Studio M5 Max, 128GB |
|---|---|---|---|
| Ling 3.0 flashHaiku-class | 78 GB | 82 GB | 26 tok/s estimated |
| Qwen3.5 122B-A10BHaiku-class | 78 GB | 79 GB | 26 tok/s estimated |
| gpt-oss-120bBelow every hosted tier | 63 GB | 65 GB | 46 tok/s estimated |
| Mistral Small 4 (119B-2603)Below every hosted tier | 74 GB | 75 GB | 41 tok/s estimated |
| Qwen3-Coder NextBelow every hosted tier | 48 GB | 49 GB | 70 tok/s estimated |
| Devstral 2 123BBelow every hosted tier | 75 GB | 87 GB | 5.3 tok/s estimated |
The extra memory buys context as well. Of the 27 models both machines hold at 32k, 6 run to a longer window on the Mac Studio M5 Max, 128GB: the weights are a fixed size and the KV cache is not, so what the weights leave spare is what a longer context grows into. Gemma 4 31B it reaches 256k there against 64k on the MacBook Pro M5 Max (16-inch), 48GB, each the longest window the calculator offers that the machine still holds it at.
The MacBook Pro M5 Max (16-inch), 48GB is also head to head with the same machine at another memory size: 64GB · 128GB.
The Mac Studio M5 Max, 128GB is also head to head with another computer: Mac mini M5 Pro, 24GB · DGX Spark, 128GB · GMKtec EVO-X2, 128GB · MacBook Air M5 (15-inch), 16GB · MacBook Pro M5 Pro (16-inch), 64GB. With a graphics card: RTX PRO 6000 Blackwell, 96GB · Radeon AI PRO R9700, 32GB. With the same machine at another memory size: 48GB · 64GB. With the machine it replaced: Mac Studio M4 Max, 128GB.
The assumptions behind both columns
Both columns use the same usage: 500k tokens a day at 15:1 input to output, 32k of context, $0.17 per kWh, and today's API prices held flat. Speeds marked estimated are worked out from memory bandwidth rather than measured, and pay-back scales with them. Change any of it in the calculator.
More head to head: everything the MacBook Pro M5 Max (16-inch), 48GB runs · everything the Mac Studio M5 Max, 128GB runs · every other match-up · the quickest pay-back at each level of use · every model against the frontier