# Yuchen Jin praises DeepSeek-V4.1-Flash-1017 and DeepSeek's efficiency focus

> Original title: DeepSeek-V4.1-Flash-1017 is an amazing model.

- Source: Yuchen Jin
- Published: 2026-11-07T18:25:31.000Z
- Bad Influence: https://badinfluence.news/items/p2k3dv1ogw7gzk8e5x98tykks
- Original: https://x.com/Yuchenj_UW/status/2119134167627887065

## Summary

Yuchen Jin calls DeepSeek-V4.1-Flash-1017 an amazing model. He says DeepSeek treats inference efficiency as a first-class principle in model architecture design and open-sources its methods, and he rates the lab S-tier.

## Post

DeepSeek-V4.1-Flash-1017 is an amazing model.

DeepSeek is one of the few OSS model labs that treat inference efficiency as a first-class principle in model architecture design, then open-source all their “secrets.”

S-tier lab.