Best Free AI IDEs in 2026

You no longer need to pay $20/month for AI-powered coding. In March 2026, several excellent AI IDEs offer free tiers—including Google’s Antigravity with full access to premium models. Here’s what’s actually free, what’s limited, and what’s worth paying for.

Last verified: March 2026

Free AI IDEs Ranked

1. Google Antigravity — Best Free AI IDE Overall

• Cost: Completely free (Public Preview)
• Models included: Claude Opus 4.5, Gemini 3 Flash, GPT-OSS
• Standout feature: Manager View for parallel AI agents

Antigravity is the most generous free AI IDE in 2026. During its Public Preview, you get access to frontier models that cost $20-40/month elsewhere. The Manager View—where multiple AI agents work on your codebase simultaneously—is a feature no paid tool offers.

Catch: It’s free during preview. Google will likely add paid tiers later.

2. Windsurf (Individual Tier) — Best Free Established IDE

• Cost: Free (Individual tier)
• Models included: Access to AI features with limits
• Standout feature: Cascade agentic engine, Wave 13 features

Windsurf’s free Individual tier is genuinely useful, not a crippled trial. Wave 13 introduced Arena Mode (side-by-side model comparison) and Plan Mode (smarter task planning). Now owned by Cognition (Devin), Windsurf continues to innovate.

Catch: Free tier has usage limits. Pro is $15/month for unlimited access.

3. GitHub Copilot Free — Best for GitHub Users

• Cost: Free tier available
• Models included: GPT-based, Claude Sonnet
• Standout feature: Deep GitHub integration, PR creation

GitHub Copilot’s free tier offers code completion and chat within VS Code. The deep integration with GitHub—issues, PRs, Actions—makes it the natural choice if your workflow lives on GitHub.

Catch: Free tier limits monthly completions and chat messages.

4. Gemini CLI — Best Free Terminal Tool

• Cost: Free
• Models included: Gemini models via Google AI Studio
• Standout feature: Voice input, 1M token context window

Gemini CLI brings AI to your terminal for free. Connect it to Google AI Studio and you get Gemini model access at no cost. Supports voice input, large context windows, and agentic workflows.

Catch: Requires Google AI Studio account. Rate limits apply.

5. Continue (VS Code Extension) — Best Free Extension

• Cost: Free, open source
• Models included: Bring your own (Ollama, OpenAI, Anthropic)
• Standout feature: Works with any model, fully customizable

Continue isn’t a standalone IDE but a free, open-source VS Code extension that adds AI capabilities. Connect it to Ollama for fully free, local AI coding assistance. The most flexible option for developers who want full control.

Catch: Requires setup and your own model provider.

Comparison Table

IDE	Truly Free?	Models	Autocomplete	Agents	Voice
Antigravity	Yes (preview)	Premium	✅	✅ (parallel)	✅
Windsurf	Yes (limited)	Good	✅	✅	✅
Copilot Free	Yes (limited)	GPT/Claude	✅	❌	❌
Gemini CLI	Yes	Gemini	N/A	✅	✅
Continue	Yes	Any	✅	❌	❌

What About Paid IDEs?

The paid options (Cursor at $20/month, Claude Code with API costs) offer genuine advantages: better autocomplete, more reliable agents, larger context windows, and premium support. But the gap between free and paid is shrinking fast.

The honest take: If you’re a professional developer shipping production code daily, $20/month for Cursor is worth it. If you’re learning, prototyping, or budget-conscious, the free tools are now genuinely good enough.

FAQ

Is Google Antigravity really free?

Yes, during its Public Preview phase. No credit card required. You get access to Claude Opus 4.5, Gemini 3 Flash, and GPT-OSS at no cost. Google hasn’t announced post-preview pricing.

What’s the best free AI IDE for beginners?

Antigravity for its simplicity and free premium models, or Windsurf for its polished editing experience. Both are VS Code-based so the learning curve is gentle.

Can I use free AI IDEs for professional work?

Yes. Antigravity and Windsurf’s free tiers are capable enough for professional development. The main trade-off is usage limits (Windsurf) or uncertain future pricing (Antigravity).

How does Windsurf free compare to Cursor Pro?

Windsurf’s free tier includes agentic features (Cascade) that Cursor locks behind its $20/month Pro plan. Cursor’s autocomplete is better, but Windsurf free offers more agent capability at no cost.

Should I wait for Antigravity to leave preview?

No—use it now while it’s free. Even if Google adds paid tiers later, the preview experience helps you evaluate whether the agent-first paradigm fits your workflow.