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

Gemma 4 12B vs Qwen3.5 9B

Gemma 4 12B and Qwen3.5 9B both score 14 on the intelligence index. Both take the same machine to start: the cheapest here that runs either is the Mac mini M6, 16GB, at $899. On it, Qwen3.5 9B is about 1.2× quicker: 17 tok/s against 14, both estimated from memory bandwidth. At 500k tokens a day the Mac mini M6, 16GB pays for itself in 69 years running Qwen3.5 9B, against 71 years running Gemma 4 12B.

Gemma 4 12BQwen3.5 9B
Intelligence index1414
ClassBelow every hosted tierBelow every hosted tier
Weights7.1 GB5.7 GB
Needs at 32k8.0 GB6.8 GB
QuantisationQ4_K_MQ4_K_M
Parameters12B9.7B
Max context256k256k
API price per 1M$0.08 in / $0.13 outpriced as Qwen3.5 9B$0.08 in / $0.13 out
LicenceApache 2.0Apache 2.0
Machines here that run it37 of 3737 of 37
Cheapest machine that runs itMac mini M6, 16GB $899Mac mini M6, 16GB $899

Run Gemma 4 12B on the Mac mini M6, 16GB · or Qwen3.5 9B

Jump to: Side by side on the Mac mini M6, 16GB · How much use it takes to pay for the machine · Memory is not what separates them · The assumptions behind both columns

Side by side on the Mac mini M6, 16GB

The cheapest machine that runs either model is the same one, so this is the pair doing the same work on the same hardware: Mac mini M6, 16GB, at $899.

Gemma 4 12BQwen3.5 9B
Speed at 32k14 tok/s estimated17 tok/s estimated
Pay-back on this machinePays back in 71 yearsPays back in 69 years
API cost per month$1.27priced as Qwen3.5 9B$1.27

Run Gemma 4 12B on the Mac mini M6, 16GB · or Qwen3.5 9B

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 Mac mini M6, 16GB. Qwen3.5 9B is never the slower of the two to pay for it, at any level of use.

A day's useGemma 4 12BQwen3.5 9B
50ka few chats a day706 years685 years
200klight assistant use176 years171 years
1Ma moderate coding-assistant day35 years34 years
4Mheavy coding with an agent8.8 years8.6 years
20Magents running most of the day21 monthsits ceiling21 months

The Mac mini M6, 16GB generates at most 19.8M tokens a day on Gemma 4 12B, 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 Gemma 4 12B at 20M tokens a day · or Qwen3.5 9B

Memory is not what separates them

Gemma 4 12B needs 8.0 GB of memory at 32k of context and Qwen3.5 9B needs 6.8 GB. Every machine priced here that runs one runs the other, at 32k of context. So the choice between them is what each is good at, how fast it runs and what the same work costs on an API, not what you have to buy to hold it.

Gemma 4 12B is also head to head with GLM-4.7-Flash above it on the leaderboard and Gemma 3 12B it, the last-generation Gemma nearest it in size. Qwen3.5 9B is also head to head with Nemotron 3.5 Lightning 30B-A3B below it on the leaderboard and Qwen3 8B, the last-generation Qwen nearest it in size.

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 Gemma 4 12B · every machine that runs Qwen3.5 9B · every other match-up · both against the frontier · the quickest pay-back at each level of use