Windsurf vs Antigravity vs Cursor: Which AI IDE Should You Pick? (March 2026)
Windsurf vs Antigravity vs Cursor — March 2026
The three AI IDEs that matter most in 2026, compared honestly.
Quick Comparison
| Feature | Windsurf | Antigravity | Cursor |
|---|---|---|---|
| Price | $15/mo Pro | Free (Preview) | $20/mo Pro |
| Based On | VS Code fork | Custom (agent-first) | VS Code fork |
| Top Model | Multi-model | Claude Opus 4.5 | Multi-model |
| Agentic Mode | Cascade | Agent View (primary) | Composer |
| Autocomplete | ⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ |
| Agent Autonomy | High | Highest | High |
| Community Size | Large | Growing | Largest |
| Git Worktrees | ✅ Parallel | ❌ | ❌ |
| Arena Mode | ✅ Unique | ❌ | ❌ |
| Plan Mode | ✅ | Spec-based | ❌ |
| MCP Support | ✅ | ✅ | ✅ |
Windsurf (#1 Ranked)
What’s New in March 2026
Arena Mode is genuinely innovative: run the same coding task on two hidden models side-by-side, compare results, and vote. Over time, this discovers which model performs best for your specific workflow — not some generic benchmark.
Plan Mode makes Cascade think before it codes. Instead of diving straight into generation, it creates a plan you can review and modify. This reduces wasted computation and produces more intentional code.
Strengths
- Best value at $15/mo (cheaper than Cursor)
- Arena Mode for personalized model discovery
- Parallel multi-agent sessions with Git worktrees
- Side-by-side Cascade panes for concurrent work
- Strong autocomplete (close to Cursor)
Weaknesses
- Smaller extension ecosystem than Cursor
- Less community content and tutorials
- Agent mode less autonomous than Antigravity
Pricing
| Plan | Price | Features |
|---|---|---|
| Free | $0 | Unlimited completions |
| Pro | $15/mo | Full model access, Arena Mode |
| Business | $30/mo | Team management |
| Enterprise | Custom | Self-hosted options |
Google Antigravity (#2 Ranked)
The Agent-First Paradigm
Antigravity doesn’t try to be a better VS Code. It reinvents the IDE around agent autonomy. Two views:
- Agent View — Chat-driven, agent executes tasks with high autonomy
- Editor View — Traditional IDE for manual editing
This “agent-first” approach is the most radical departure from traditional coding workflows.
Strengths
- Completely free during Public Preview
- Claude Opus 4.5 included at zero cost
- Most diverse free model lineup (Opus, Gemini 3 Flash, GPT-OSS)
- Agent-first design for maximum autonomy
- Strong spec-based approach for complex tasks
Weaknesses
- New and less polished than Cursor/Windsurf
- No guarantee free tier continues
- Autocomplete less refined
- Smaller community and documentation
- Some users report inconsistency with complex projects
Pricing
| Plan | Price | Features |
|---|---|---|
| Preview | Free | Everything (no paid tier yet) |
SWE-Bench
Antigravity scores ~72% on SWE-Bench using Claude Opus — comparable to Claude Code’s performance with the same model.
Cursor (#3 Ranked but Most Popular)
The Established Champion
Cursor has the largest community, most tutorials, and the most mature feature set. Its ranking at #3 doesn’t mean it’s bad — it means the competition caught up while Cursor’s March updates were incremental.
Strengths
- Best autocomplete in the market
- Composer — best visual multi-file review
- Largest community and extension ecosystem
- Most tutorials, courses, and community content
- .cursorrules for project-level customization
- Stable and well-tested
Weaknesses
- $20/mo (most expensive of the three)
- No Arena Mode equivalent
- No Git worktree parallel sessions
- Agent mode less autonomous than Antigravity
- Incremental March updates vs competitors’ leaps
Pricing
| Plan | Price | Features |
|---|---|---|
| Free | $0 | 2,000 GPT-4o messages/mo |
| Pro | $20/mo | Unlimited GPT-4o, Claude |
| Business | $39/mo | Team features, privacy |
| Enterprise | Custom | SSO, support |
Head-to-Head: Key Scenarios
”I want the best autocomplete”
→ Cursor. It’s still the king of inline suggestions. Windsurf is close behind. Antigravity’s autocomplete is noticeably less refined.
”I want maximum agent autonomy”
→ Antigravity. Its agent-first design gives AI the most freedom to plan, execute, and iterate. Claude Code (terminal) is the only tool that rivals it here.
”I want to discover the best model for my work”
→ Windsurf. Arena Mode’s blind testing is unique and genuinely useful. No other IDE lets you empirically test which model works best for you.
”I’m on a tight budget”
→ Antigravity. Free is free. Even after Preview ends, the value proposition of frontier models at zero cost is unbeatable.
”I want the safest, most mature choice”
→ Cursor. Largest community, most documentation, most stable. The “nobody gets fired for buying IBM” choice.
”I work on multiple projects simultaneously”
→ Windsurf. Git worktree support with parallel Cascade panes lets you run multiple agents on different branches simultaneously.
My Recommendation
For most developers in March 2026:
- Try Antigravity first — It’s free with Claude Opus. Zero risk.
- If you need better autocomplete — Switch to Windsurf ($15/mo) or Cursor ($20/mo)
- If you’re already on Cursor — Don’t switch unless you’re frustrated. It’s still excellent.
- Use Claude Code alongside any IDE — The terminal agent complements all three
The real shift in 2026: these tools are converging on agent-first design. By the end of the year, the differences may narrow. For now, your choice matters less than actually using AI coding tools effectively.
Last verified: March 2026