DeepSeek's V4.1-Flash update tops Arena's open agent rankings at $0.20 per task
Arena's October 19th snapshot ranked the October 17th model update No. 11 overall, based on 7,498 agent sessions.
By Ryan Merket · Published
Primary source: X
Why it matters
Arena's result puts a concrete task-cost figure beside an open-weight model's agent performance, giving developers a reason to test whether DeepSeek's efficiency gains hold in their own workflows.
DeepSeek's October 17th update to V4.1-Flash ranked No. 1 among open models and No. 11 overall on Arena.ai's Agent Arena leaderboard, with a reported median cost of $0.20 per task. Arena shared the result in a post on X, citing 7,498 sessions and a 5.13% net-improvement score.…
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