Sunk Cost sunkcost.ai Data checked 2026-09-03

MacBook Pro M5 Max (16-inch), 64GB vs Mac Studio M5 Ultra, 96GB for local AI

The Mac Studio M5 Ultra, 96GB holds 29 of the 39 open models here, and the MacBook Pro M5 Max (16-inch), 64GB holds 27. The MacBook Pro M5 Max (16-inch), 64GB costs $100 less. On Qwen3.8 27B, the strongest model both hold, the Mac Studio M5 Ultra, 96GB is about 1.9× faster: 48 tok/s against 25, both estimated from memory bandwidth. The MacBook Pro M5 Max (16-inch), 64GB pays for itself sooner, in 67 years against 68 years at 500k tokens a day.

MacBook Pro M5 Max (16-inch), 64GBMac Studio M5 Ultra, 96GB
Price$5,399$5,499
Memory64 GB96 GB
Usable by the GPU48 GB72 GB
Memory bandwidth614 GB/s1200 GB/s
Power under load145 Wstand-in270 Wstand-in
Models that fit2729
Best model it runsQwen3.8 27BQwen3.8 27B
Speed on that model25 tok/s estimated48 tok/s estimated
Pay-back on that modelPays back in 67 yearsPays back in 68 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 MacBook Pro M5 Max (16-inch), 64GB · or the Mac Studio M5 Ultra, 96GB

The same money, two different machines

These two cost within $100 of each other: $5,399 for the MacBook Pro M5 Max (16-inch), 64GB and $5,499 for the Mac Studio M5 Ultra, 96GB. 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), 64GB 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 useMacBook Pro M5 Max (16-inch), 64GBMac Studio M5 Ultra, 96GB
50ka few chats a day673 years685 years
200klight assistant use168 years171 years
1Ma moderate coding-assistant day34 years34 years
4Mheavy coding with an agent8.4 years8.6 years
20Magents running most of the day20 months21 months

Run the MacBook Pro M5 Max (16-inch), 64GB at 20M tokens a day · or the Mac Studio M5 Ultra, 96GB

What the extra memory buys

The Mac Studio M5 Ultra, 96GB holds 2 models the MacBook Pro M5 Max (16-inch), 64GB cannot at 32k of context. The strongest of them are what the difference in memory actually buys.

ModelWeightsNeeds at 32kOn the Mac Studio M5 Ultra, 96GB
gpt-oss-120bBelow every hosted tier63 GB65 GB90 tok/s estimated
Qwen3-Coder NextBelow every hosted tier48 GB49 GB137 tok/s estimated

The extra memory buys context as well. Of the 27 models both machines hold at 32k, 4 run to a longer window on the Mac Studio M5 Ultra, 96GB: 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 128k on the MacBook Pro M5 Max (16-inch), 64GB, each the longest window the calculator offers that the machine still holds it at.

The MacBook Pro M5 Max (16-inch), 64GB is also head to head with the same machine at another memory size: 48GB · 128GB.

The Mac Studio M5 Ultra, 96GB is also head to head with another computer: HP Z2 Mini G1a, 128GB. With the same box and the bigger chip: 256GB. With the machine it replaced: Mac Studio M3 Ultra, 96GB.

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), 64GB runs · everything the Mac Studio M5 Ultra, 96GB runs · every other match-up · the quickest pay-back at each level of use · every model against the frontier