deepseek-v4.1POST

DeepSeek V4.1 Flash tops LM Arena webdev open ranking at 1670 points

Post claims V4.1-Flash-1017 ranks #1 among open models and #12 overall on LM Arena's webdev code arena with 1670 points, ahead of Opus 5 high, at $0.30/$1.20 per million tokens.

Ayaan Khan

@ayaankhan_xArchived 12 days agoOriginally posted 2026.10.19

Ayaan Khan @ayaankhan_xOriginally posted 2026.10.19

Open original on X

deepseek v4.1-flash-1017 just took the #1 open model spot on lmarena's code arena for webdev. 1670 points, #12 overall, ahead of opus 5 high and within 10 points of gpt-6 sol max, at $0.30/$1.20 per million tokens. the open model is now 10x cheaper than the model it beat.

x.com/ayaankhan_x/status/2112027101234688448Archived 2026.10.19 12:02