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

Ling 3.1 flash vs Qwen3.8 Flash Next

Ling 3.1 flash scores higher on the intelligence index, 41 against 40. None of the 37 machines here still sold at a published price runs Ling 3.1 flash at 32k of context. Qwen3.8 Flash Next runs on the Mac Studio M5 Ultra, 256GB, from $10,799. At 500k tokens a day that machine pays for itself in 372 years running Qwen3.8 Flash Next.

Ling 3.1 flashQwen3.8 Flash Next
Intelligence index4140
ClassSonnet-classSonnet-class
Weights358 GB120 GB
Needs at 32k358 GB121 GB
QuantisationQ4_K_MQ4_K_M
Parameters560B (25B active)180B (6B active)
Max context256k256k
API price per 1M$0.075 in / $0.225 out$0.15 in / $0.47 out
LicenceMITqwen-community-1.0
Machines here that run it0 of 371 of 37
Cheapest machine that runs itnone listedMac Studio M5 Ultra, 256GB $10,799

Run Ling 3.1 flash in the calculator · or Qwen3.8 Flash Next on the Mac Studio M5 Ultra, 256GB

Machines that run one and not the other

Qwen3.8 Flash Next needs 121 GB of memory at 32k of context and Ling 3.1 flash needs 358 GB. That puts Qwen3.8 Flash Next on 1 of the 37 machines priced here that Ling 3.1 flash does not, starting at $10,799.

MachinePriceMemorySpeed on Qwen3.8 Flash NextPay-back
Mac Studio M5 Ultra, 256GB$10,799256 GB74 tok/s estimatedPays back in 372 years

Ling 3.1 flash is also head to head with GLM-5.3-Flash above it on the leaderboard. Qwen3.8 Flash Next is also head to head with DeepSeek V4-Flash below it on the leaderboard and Qwen3 235B-A22B Instruct 2507, 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: what Ling 3.1 flash needs · every machine that runs Qwen3.8 Flash Next · every other match-up · both against the frontier · the quickest pay-back at each level of use