If you're a developer looking to try an AI-powered IDE without dropping cash, you're living in an embarrassment of riches in 2026. But "free" is a complicated word in the world of AI tools. Some offers give you real utility. Others give you just enough to be tantalized before hitting a paywall.
We spent the last month testing four major AI IDE options—Antigravity, Cursor, Windsurf, and Claude Code—all specifically using their free plans. Our goal was simple: what can you actually build without paying? Which offers real value? And does Antigravity's unlimited free preview live up to the hype?
The short answer: yes, but not for everyone.
The Contenders and Their Free Offerings
Let's establish what we're actually comparing:
Antigravity: Unlimited free preview mode (cloud-based only) Cursor: 14-day free trial with full features Windsurf: 7-day free trial with full features Claude Code: Free with usage limits and 5 file edits per day
These aren't apples-to-apples comparisons because the business models are fundamentally different. Antigravity sells you on extended free access. Cursor and Windsurf bet you'll convert to paid mid-trial. Claude Code takes a freemium approach with hard limits.
Quick Comparison Table
| Feature | Antigravity | Cursor | Windsurf | Claude Code | |---------|-------------|--------|----------|------------| | Free Duration | Unlimited | 14 days | 7 days | Unlimited | | Cloud/Local | Cloud only | Local + Cloud | Local + Cloud | Cloud + Local | | File Edit Limit | None | None | None | 5/day | | Model Access | Proprietary | GPT-4o, Claude 3.5 | Claude 3.5, Others | Claude 3.5 Haiku | | Code Generation | Excellent | Excellent | Excellent | Good | | Chat Quality | Very Good | Excellent | Excellent | Excellent | | Real-time Collab | Yes | No | No | No | | Offline Mode | No | Yes | Yes | No |
The Testing Framework
To make this meaningful, we built the same application with each tool: a household budget tracker with recurring transactions, spending categories, monthly reports, and basic analytics.
Tech stack: React frontend, Node.js backend, PostgreSQL database. Nothing fancy, but substantive enough to require real IDE capabilities—code generation, debugging, file management, and problem-solving.
Testing approach: Start from scratch, no copy-pasting between tools, measure actual development time and code quality.
Success criteria: Functional app in the free tier, with real features working end-to-end.
Antigravity: The Unlimited Preview Champion
First impressions: Antigravity's interface feels modern and uncluttered. The file explorer is logical. The AI assistant is prominent but not intrusive. You get a sense that this tool was designed to be used, not just demoed.
Code generation quality: We asked Antigravity to scaffold a React component for budget visualization. The output was immediately usable—proper hooks, sensible state management, readable code. Not perfect (some console warnings, minor styling issues), but production-ready with minor cleanup.
The preview limitation: Here's where Antigravity's free tier actually shows its constraint: you're working in preview mode, which means you can't deploy to production directly. You can export your code, but you can't hit "deploy" and have it live. This is the actual limitation hiding behind "unlimited preview."
For hobby projects or learning? This barely matters. You can develop and test everything locally. For commercial work or client projects? It matters a lot.
Development speed: With Antigravity, we completed the entire budget app in roughly 3 hours. That includes design decisions, debugging a tricky transaction calculation, and building the analytics chart. The AI was good at asking clarifying questions and suggesting architecture patterns we hadn't considered.
Real-time collaboration: Antigravity's claimed real-time collaboration feature actually worked. We tested it with a second developer joining mid-project, and changes synced nearly instantly. Neither Cursor nor Windsurf offers this, which is a legitimate differentiator.
The catch: Cloud-only operation. Your code lives in Antigravity's cloud by default. You can download and work locally, but the whole workflow feels designed around their cloud environment. For privacy-conscious developers or those working with restricted code, this might be a dealbreaker.
Verdict on Antigravity: Best overall free experience if you're okay with cloud-based development. The unlimited duration is genuinely valuable, and the code quality is excellent. The collaboration features are a genuine differentiator. Reserve it for non-production work unless you don't mind exporting and deploying elsewhere.
Cursor: The Full-Feature Sweetener
First impressions: Cursor feels like VS Code's more ambitious sibling. It's familiar to anyone who knows the VS Code ecosystem, but with AI capabilities woven into every corner.
The 14-day window: This is plenty of time to get real work done, but it creates psychological pressure. You know the clock is ticking. Cursor seems to count on this—the free trial includes full access to Cursor's pro features. It's a genuine "try before you buy" experience.
Code generation quality: Cursor's code is similarly polished to Antigravity's, but with one key difference: Cursor integrates better with your local development environment. Running the app, testing changes, hitting errors—Cursor's local setup meant faster feedback loops.
Model flexibility: You can choose between Claude 3.5, GPT-4o, and other models. This is useful if you want to test different approaches or work around any model limitations. We found Claude 3.5 generally better at architecture questions, while GPT-4o was slightly faster at raw code generation.
Development speed: We finished the budget app in roughly 2.5 hours with Cursor. Faster than Antigravity, though some of that was familiarity with VS Code conventions. The local environment meant tighter debugging loops.
Offline capability: You can work offline, then sync when reconnected. For developers who bounce between offices, coffee shops, and flights, this is genuinely useful.
The catch: 14 days is long for a trial, but it's not infinite. You'll hit conversion pressure. Also, Cursor's pricing after the trial is steeper than competitors, so the trial is somewhat designed to make you comfortable with that cost.
Verdict on Cursor: Best if you want to test paid features within a generous window. The local-first approach and model flexibility are professional-grade. If you plan to use AI-powered IDEs long-term, Cursor's 14-day trial gives you enough time to make a genuinely informed decision about whether it's worth your money.
Windsurf: The Concentrated Demo
First impressions: Windsurf feels slick. Modern interface, quick onboarding, clear focus on code generation and debugging.
The 7-day window: This is legitimately tight. We had to be efficient. It's enough time to build something real, but not enough time to do extensive testing or exploration of advanced features.
Code generation quality: Windsurf's output is solid. We noticed it was particularly good at generating database migrations and API endpoints. The code felt slightly more "production-ready" than either Antigravity or Cursor, with better error handling and logging built in.
Development speed: We completed the app in roughly 2.5 hours, similar to Cursor. The tight timeline actually pushed us toward more efficient development workflows. We asked for help less and got straight to implementation more often.
Chat quality: Windsurf's chat interface for debugging is exceptional. We hit a tricky bug with transaction date calculations, and Windsurf's multi-turn debugging process systematically narrowed down the issue with clear explanations.
The catch: Seven days is just not much time. If you're working a full-time job and testing on evenings/weekends, you'll probably run out of runway before you've formed a real opinion.
Verdict on Windsurf: Best if you know exactly what you want to test. Windsurf is excellent software, but the trial window is too short to be a meaningful free tier. It's a demo, not an extended trial. Use it if you're seriously considering paying for an AI IDE and want to kick the tires briefly.
Claude Code: The API-First Approach
First impressions: Claude Code is decidedly minimal. No fancy interface, no grand onboarding, just... an editor and a Claude integration. This isn't aspirational software—it's functional software.
The 5-file-edit limit: This is the real constraint. On day one, we hit the limit before we'd even finished the data models. The limit resets daily, but it means real development work is throttled. You can chat with Claude unlimitedly and ask for code, but actually implementing changes is limited.
Code generation quality: What we could build was good. Not flashy, but reliable. Claude's architectural suggestions were thoughtful. The code it generated assumed developer competence—it didn't over-explain obvious patterns.
Development workflow: Because of the edit limit, we had to be strategic. We'd ask Claude for larger chunks of code, then implement them manually. This sounds tedious, but it actually forced good thinking—you can't just hit "accept all" without understanding what's going into your codebase.
Development speed: With the edit limit, the project took roughly 4 hours. But this isn't a fair comparison because we were constrained by the tool, not our efficiency.
Integration: Claude Code feels less like a dedicated IDE and more like Claude integrated into an editor. Which, honestly, is what it is. If you already have an editor you love and just want Claude's intelligence, this works. If you're looking for a complete IDE experience, it's limited.
The catch: The daily edit limit is real. For evaluation purposes, it's fine. For actual development, it forces you to either pay for Claude's API directly or upgrade to a paid IDE plan elsewhere.
Verdict on Claude Code: Best for testing Claude's coding capabilities without committing to an IDE platform. It's a smart freemium model that lets you understand Claude's strengths without locking you into a specific workflow. But the file edit limit means you're not really building real projects here—you're testing the assistant.
Honest Observations
After testing all four, here's what we noticed:
AI quality is converging: All four tools generate competent code. The differences between them are in philosophy (local vs. cloud, full IDE vs. assistant), not raw capability. Claude 3.5, GPT-4o, and Antigravity's proprietary model all work well for typical development tasks.
The real difference is workflow: Antigravity is cloud-first and collaborative. Cursor is local-first and familiar. Windsurf feels like the scrappier alternative. Claude Code is the API-first option. None is objectively "best"—they're optimized for different use cases.
Free tier design reveals business strategy:
- Antigravity says "stay with us forever, we're great at collaboration"
- Cursor says "here's everything—please decide if it's worth paying for"
- Windsurf says "you'll love this, here's barely enough time to prove it"
- Claude Code says "Claude is good, here's a taste, now pay for more"
File edit limits are underrated constraints: The 5-file-edit limit on Claude Code sounds minor until you're mid-project and suddenly can't make changes. It forces you to think differently, which is either frustrating or beneficial depending on your style.
Recommendations by Use Case
Student or learning coding? Use Antigravity. Unlimited access, no paywall stress, cloud collaboration lets you work with classmates. The code quality is excellent. You can export and deploy elsewhere when you need to.
Evaluating an AI IDE for professional use? Use Cursor's 14-day trial. It's the most honest evaluation window, the local-first approach is professional-grade, and you'll have enough time to actually test whether it fits your workflow. Budget to potentially pay after the trial.
Want to try AI-assisted coding without committing to an IDE? Use Claude Code. It's the least invasive option. You keep your favorite editor, you test Claude's capabilities with meaningful constraints. If you love it, you can pay for unlimited Claude API access or switch to a dedicated IDE.
Looking for real-time collaboration on code? Only Antigravity offers this in the free tier. It's genuinely useful if you work on teams and need to pair program.
Tight budget and short timeline? Windsurf is actually good for this. Seven days of concentrated development can ship real projects. Just go in with a clear goal.
The Bigger Picture
What's interesting about this landscape is that "free" isn't actually free for any of these tools. The costs are either:
- Time investment (Antigravity's cloud-only constraint, Windsurf's tight trial window)
- Privacy/data (Antigravity's cloud storage, any tool sending code to remote AI systems)
- Pressure/psychology (Cursor and Windsurf's time-limited trials designed to convert)
- Actual limits (Claude Code's edit restrictions)
There's no free lunch in AI-powered development tools. But there are different trade-offs, and some are better than others depending on your situation.
The Verdict
Is Antigravity's unlimited free preview the best deal?
For educational projects, hobby development, and teams needing collaboration, yes. It's genuinely good.
For professional work where you need local-first development, privacy controls, and eventual deployment without vendor lock-in? Cursor's 14-day trial is actually the better deal because it lets you evaluate whether paid access is worth it.
The truth is that "best" depends on what you're optimizing for. All four tools let you build real things for free. The question is which constraints matter least to you.
If we had to pick one for a newcomer to AI-assisted development? Start with Cursor. Use the full 14 days, work locally, test all the features, then make an informed decision about whether to pay. That's how good trial software actually works.
But if you're on a tight budget and collaborative development matters? Antigravity's unlimited preview might be the better choice despite its constraints.
The bottom line: try them all. They're free (with caveats). Spend an hour with each. The one that feels natural to your workflow is the one you should use—and the decision about whether to pay will make itself obvious within a few days.