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

DeepSeek V4-Flash vs Inkling Small

DeepSeek V4-Flash scores higher on the intelligence index, 35 against 26. Both take the same machine to start: the cheapest here that runs either is the Mac Studio M5 Ultra, 256GB, at $10,799. On it, DeepSeek V4-Flash is about 1.1× quicker: 49 tok/s against 43, both estimated from memory bandwidth. At 500k tokens a day the Mac Studio M5 Ultra, 256GB pays for itself in 124 years running Inkling Small, against 1,056 years running DeepSeek V4-Flash.

DeepSeek V4-FlashInkling Small
Intelligence index3526
ClassSonnet-classHaiku-class
Weights155 GB163 GB
Needs at 32k155 GB164 GB
QuantisationUD-Q4_K_MUD-Q4_K_M
Parameters284B (13B active)266B (12B active)
Max context1024k1024k
API price per 1M$0.065 in / $0.18 out$0.45 in / $1.2 out
LicenceMITApache 2.0
Machines here that run it1 of 371 of 37
Cheapest machine that runs itMac Studio M5 Ultra, 256GB $10,799Mac Studio M5 Ultra, 256GB $10,799
Summarising not rated not rated
Translation not rated not rated
Everyday coding not rated not rated
Reasoning & maths not rated not rated
Agentic work not rated not rated

Run DeepSeek V4-Flash on the Mac Studio M5 Ultra, 256GB · or Inkling Small

Ratings are coarse on purpose: they say what a model is usable for, not where it places to the decimal.

Side by side on the Mac Studio M5 Ultra, 256GB

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 Studio M5 Ultra, 256GB, at $10,799.

DeepSeek V4-FlashInkling Small
Speed at 32k49 tok/s estimated43 tok/s estimated
Pay-back on this machinePays back in 1,056 yearsPays back in 124 years
API cost per month$1.10$7.56

Run DeepSeek V4-Flash on the Mac Studio M5 Ultra, 256GB · or Inkling Small

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 Studio M5 Ultra, 256GB. Inkling Small 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 useDeepSeek V4-FlashInkling Small
50ka few chats a day10,564 years1,236 years
200klight assistant use2,641 years309 years
1Ma moderate coding-assistant day528 years62 years
4Mheavy coding with an agent132 years15 years
20Magents running most of the day26 years3.1 years

Run DeepSeek V4-Flash at 20M tokens a day · or Inkling Small

Memory is not what separates them

DeepSeek V4-Flash needs 155 GB of memory at 32k of context and Inkling Small needs 164 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.

DeepSeek V4-Flash is also head to head with Qwen3.8 Flash Next above it on the leaderboard and Qwen3.8 27B below it. One more model needs much the same memory: MiniMax M2.7. Inkling Small is also head to head with Qwen3.8 27B above it on the leaderboard and Tencent Hy3 below it.

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 DeepSeek V4-Flash · every machine that runs Inkling Small · every other match-up · both against the frontier · the quickest pay-back at each level of use