GPT-5.4 Now Available in Windsurf (Plus Arena Mode)

Melvin Vivas · X post · 2026-03-07 · Open on X

Topics: AI Dev Tools & Productivity, Industry Trends & Job Market · Level: beginner

Summary

News post: Windsurf added OpenAI's GPT-5.4 with several reasoning-effort levels. GPT-5.4 Low can also be used in Windsurf's Arena Mode (Frontier and Hybrid Battle Groups), where models are compared head to head. It shows that coding IDEs now offer new frontier models with a choice of reasoning effort.

Key points

• Windsurf offers GPT-5.4 at several reasoning-effort levels.
• GPT-5.4 Low is available in Arena Mode's Frontier and Hybrid Battle Groups.
• Arena Mode lets you compare models side by side on your own coding tasks.
• Choosing a reasoning effort means trading speed and cost against answer quality.

Resources mentioned

• Windsurf · tool · windsurf.com · check price
  AI-powered coding IDE, now owned by Cognition after its founders left for Google.
  Also in: Windsurf Split: Google Antigravity, Cognition's Devin & AI Coding Tools (Melvin Vivas on X · notes)
• GPT-5.4 · tool · openai.com · paid
  OpenAI frontier model (Thinking and Pro variants) for reasoning, coding and agents.
  Also in: Opinion: GPT-5.4 in Cursor 3 Replaces Opus for Coding (Melvin Vivas on X · notes), Splitting AI Tools: Cursor 3 + GPT-5.4 for Code, Claude for Learning (Melvin Vivas on X · notes), Creator's Coding Setup: Cursor 3 with GPT 5.4 (Melvin Vivas on X · notes), Open-Source GLM-5.1 Beats GPT-5.4 on SWE-Bench Pro (Melvin Vivas on X · notes) and 2 more

Try this

• Try GPT-5.4 at different reasoning efforts in Arena Mode and compare it with other models on your own tasks.