Mac Studio M5 Max, 128GB vs MacBook Pro M5 Pro (16-inch), 64GB for local AI
The Mac Studio M5 Max, 128GB holds 39 of the 48 current models here, and the MacBook Pro M5 Pro (16-inch), 64GB holds 32. The MacBook Pro M5 Pro (16-inch), 64GB costs $1,100 less. On Qwen3.8 27B, the strongest model both hold, the Mac Studio M5 Max, 128GB is about 2.1× faster: 25 tok/s against 12, both estimated from memory bandwidth. The MacBook Pro M5 Pro (16-inch), 64GB pays for itself sooner, in 269 years against 287 years at 500k tokens a day.
| Mac Studio M5 Max, 128GB | MacBook Pro M5 Pro (16-inch), 64GB | |
|---|---|---|
| Price | $5,099 | $3,999 |
| Memory | 128 GB | 64 GB |
| Usable by the GPU | 96 GB | 48 GB |
| Memory bandwidth | 614 GB/s | 307 GB/s |
| Power under load | 145 Wstand-in | 140 Wstand-in |
| Models that fit | 39 | 32 |
| Best model it runs | Qwen3.8 27B | Qwen3.8 27B |
| Speed on that model | 25 tok/s estimated | 12 tok/s estimated |
| Pay-back on that model | Pays back in 287 years | Pays back in 269 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 gap between them is not a difference between these two machines. 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 Mac Studio M5 Max, 128GB · or the MacBook Pro M5 Pro (16-inch), 64GB
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 Pro (16-inch), 64GB pays back sooner at every level up to 4M tokens a day. Above that the Mac Studio M5 Max, 128GB does.
| A day's use | Mac Studio M5 Max, 128GB | MacBook Pro M5 Pro (16-inch), 64GB |
|---|---|---|
| 50ka few chats a day | 2,867 years | 2,694 years |
| 200klight assistant use | 717 years | 673 years |
| 1Ma moderate coding-assistant day | 143 years | 135 years |
| 4Mheavy coding with an agent | 36 years | 34 years |
| 20Magents running most of the day | 7.2 years | 7.9 yearsits ceiling |
On Qwen3.8 27B the MacBook Pro M5 Pro (16-inch), 64GB generates at most 17.1M tokens a day, so its figure at 20M tokens a day is for the most it can do, not for the whole of what was asked.
Run the Mac Studio M5 Max, 128GB at 20M tokens a day · or the MacBook Pro M5 Pro (16-inch), 64GB
What the extra memory buys
The Mac Studio M5 Max, 128GB holds 7 models the MacBook Pro M5 Pro (16-inch), 64GB 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 | 78 GB | 53 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 |
1 more, on the Mac Studio M5 Max, 128GB page.
The extra memory buys context as well. Of the 32 current models both machines hold at 32k, 3 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. Granite 4.2 30B reaches 128k there against 64k on the MacBook Pro M5 Pro (16-inch), 64GB, each the longest window the calculator offers that the machine still holds it at.
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 Max (16-inch), 48GB. 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 MacBook Pro M5 Pro (16-inch), 64GB 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 · Beelink GTR9 Pro, 128GB · Minisforum MS-S1 Max, 128GB. With a graphics card: RTX PRO 6000 Blackwell, 96GB · Radeon AI PRO R9700, 32GB. With the same machine at another memory size: 24GB · 48GB.
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 Mac Studio M5 Max, 128GB runs · everything the MacBook Pro M5 Pro (16-inch), 64GB runs · every other match-up · the quickest pay-back at each level of use · every model against the frontier