Which AI IDE is best in March 2026?

Cursor for the largest ecosystem and best tab completions ($20/mo). Windsurf for Arena Mode and best value ($15/mo). Google Antigravity for free access with Manager View parallel agents. All three are strong — choose based on budget and workflow.

Is Google Antigravity IDE really free?

Yes. During Public Preview in March 2026, Antigravity is completely free with access to Claude Opus 4.5, Gemini 3 Flash, and GPT-OSS. No pricing timeline announced yet.

Should I switch from Cursor to Windsurf?

Windsurf is 25% cheaper ($15 vs $20/mo) with more agentic features like Arena Mode and Plan Mode. But Cursor has a larger plugin ecosystem and better tab completions. Try Windsurf free tier before switching.

Quick Answer

Cursor vs Windsurf vs Antigravity IDE: March 2026 Comparison

Published: March 31, 2026

Cursor vs Windsurf vs Antigravity IDE (March 2026)

Three AI IDEs dominate in March 2026. Here’s the honest comparison.

Quick Comparison

Feature	Cursor	Windsurf	Antigravity
Price	$20/mo	$15/mo	Free (preview)
Base editor	VS Code fork	VS Code fork	Custom
Key feature	Tab completions	Arena Mode	Manager View
Agent mode	Composer	Cascade	Parallel agents
Free tier	Limited	Generous	Full access
Users	Largest community	Growing fast	Early adopters

When to Choose Each

Cursor ($20/mo): Best tab completions, largest extension ecosystem, most mature. The default choice for professional developers.

Windsurf ($15/mo): Best value. Arena Mode lets you compare model outputs side-by-side. Plan Mode for structured development. 25% cheaper than Cursor.

Antigravity (Free): Agent-first with Manager View for running parallel AI agents. Completely free during preview. Best for early adopters comfortable with newer tools.

The Bottom Line

If you’re budget-conscious: Antigravity (free) or Windsurf ($15). If you want the safest bet with the largest community: Cursor ($20). There’s no wrong choice — all three are excellent in 2026.