Arena.ai (@arena) reports Agent Arena results: DeepSeek-V4.1-Flash (Max) posts about +4.87% net improvement at roughly $0.07 median task cost — lowest among the top-3 open models — retaining ~98% of Hy4 preview’s net gain at ~73% lower cost and ~76% of Kimi K3 (Max) performance at ~92% lower cost.

Key Takeaways

  • ✓DeepSeek-V4.1-Flash (Max) enters Agent Arena at about +4.87% net improvement.
  • ✓Median task cost ~$0.07 — cheapest among top-3 open models.
  • ✓Beats Hy4 / Kimi K3 on cost-efficiency and reshapes the Pareto frontier.
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