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

Granite 4.2 8B vs GLM-4.5-Air

Granite 4.2 8B scores higher on the intelligence index, 12 against 11. The cheapest machine here that runs GLM-4.5-Air is the Framework Desktop, 128GB, at $3,449. Granite 4.2 8B runs on the Mac mini M6, 24GB at $1,099, $2,350 less. On the Framework Desktop, 128GB, the cheapest machine here that runs both, Granite 4.2 8B is about 1.8× quicker: 18 tok/s against 10, both estimated from memory bandwidth. At 500k tokens a day the Framework Desktop, 128GB pays for itself in 139 years running GLM-4.5-Air, against 432 years running Granite 4.2 8B.

Granite 4.2 8BGLM-4.5-Air
Intelligence index1211
ClassBelow every hosted tierBelow every hosted tier
Weights5.3 GB73 GB
Needs at 32k11 GB79 GB
QuantisationQ4_K_MQ4_K_M
Parameters8B110.5B (12B active)
Max context128k128k
API price per 1M$0.06 in / $0.15 out$0.13 in / $0.85 out
LicenceApache 2.0MIT
Machines here that run it33 of 3712 of 37
Cheapest machine that runs itMac mini M6, 24GB $1,099Strix Halo Framework Desktop, 128GB $3,449

Run Granite 4.2 8B on the Mac mini M6, 24GB · or GLM-4.5-Air on the Framework Desktop, 128GB

Jump to: Side by side on the Framework Desktop, 128GB · How much use it takes to pay for the machine · Machines that run one and not the other · The assumptions behind both columns

Side by side on the Framework Desktop, 128GB

The table above gives each model the cheapest machine that runs it, and those are two different machines, so nothing in it is a like-for-like race. The Strix Halo Framework Desktop, 128GB is the cheapest machine here that runs both, so this is the pair doing the same work on the same hardware.

Granite 4.2 8BGLM-4.5-Air
Speed at 32k18 tok/s estimated10 tok/s estimated
Pay-back on this machinePays back in 432 yearsPays back in 139 years
API cost per month$1.00$2.66

Run Granite 4.2 8B on the Framework Desktop, 128GB · or GLM-4.5-Air

How much use it takes to pay for the machine

Everything above is at 500k tokens a day. Pay-back moves with how much you actually run, so here are both models at the five levels of use the calculator names, on the Framework Desktop, 128GB. GLM-4.5-Air pays for it sooner at every level of use, so which of them to run does not turn on how hard you work it.

A day's useGranite 4.2 8BGLM-4.5-Air
50ka few chats a day4,321 years1,392 years
200klight assistant use1,080 years348 years
1Ma moderate coding-assistant day216 years70 years
4Mheavy coding with an agent54 years17 years
20Magents running most of the day11 years5.0 yearsits ceiling

The Framework Desktop, 128GB generates at most 13.8M tokens a day on GLM-4.5-Air, so that column's figure at 20M tokens a day is for the most it can do, not for the whole of what was asked.

Run Granite 4.2 8B at 20M tokens a day · or GLM-4.5-Air

Machines that run one and not the other

Granite 4.2 8B needs 11 GB of memory at 32k of context and GLM-4.5-Air needs 79 GB. That puts Granite 4.2 8B on 21 of the 37 machines priced here that GLM-4.5-Air does not, starting at $1,099.

MachinePriceMemorySpeed on Granite 4.2 8BPay-back
Mac mini M6, 24GB$1,09924 GB12 tok/s estimatedPays back in 122 years
Strix Halo Framework Desktop, 32GB$1,26932 GB18 tok/s estimatedPays back in 159 years
Mac mini M6, 32GB$1,29932 GB12 tok/s estimatedPays back in 144 years
AMD Radeon AI PRO R9700, 32GB$1,299card only32 GB52 tok/s estimatedPays back in 146 years
Mac mini M5 Pro, 24GB$1,69924 GB21 tok/s estimatedPays back in 201 years
Strix Halo Corsair AI Workstation 300, 64GB$1,70064 GB18 tok/s estimatedPays back in 213 years

15 more, on the Granite 4.2 8B page.

Granite 4.2 8B is also head to head with Ling 3.0 tiny above it on the leaderboard. One more model needs much the same memory: Qwen3 8B. GLM-4.5-Air is also head to head with Mistral Small 4 (119B-2603) below it on the leaderboard. Two more models need much the same memory: Qwen3.5 122B-A10B and Devstral 2 123B.

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. Where nobody rents an open model by the token, its API prices are the nearest hosted model's, named beside them. Machines are the 37 here with a published price that are still sold. Change any of it in the calculator.

More head to head: every machine that runs Granite 4.2 8B · every machine that runs GLM-4.5-Air · every other match-up · both against the frontier · the quickest pay-back at each level of use