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

Qwen3.8 Flash Next vs DeepSeek V4-Flash

Qwen3.8 Flash Next scores higher on the intelligence index — 40 against 35. Qwen3.8 Flash Next is the smaller download at 120 GB, so it runs on cheaper hardware.

Qwen3.8 Flash NextDeepSeek V4-Flash
Intelligence index4035
ClassSonnet-classSonnet-class
Weights120 GB155 GB
QuantisationQ4_K_MUD-Q4_K_M
Parameters180B (6B active)284B (13B active)
Max context256k1024k
API price per 1M$0.15 in / $0.47 out$0.065 in / $0.18 out
Licenceqwen-community-1.0MIT
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

Ratings are coarse on purpose. Speeds and pay-back depend on the machine — open either model's page for the full list, or see both against the frontier. Context is 32k throughout.