Google Antigravity: The Free IDE That Challenges Cursor and Claude Code
Google entered the war of IDEs with artificial intelligence and did not come to play. Antigravity is Google's new agent-first IDE -- free during preview, based on a fork of VS Code and with benchmarks that put Cursor and Claude Code on notice. If you work with code, digital marketing or any area that involves creating things on the computer, you need to understand what is happening.
In this article, we'll open up Antigravity from the inside: how the architecture works, what models it supports, what the 76.2% benchmark on SWE-bench means, how it compares to Cursor and Claude Code, and most importantly,When it makes sense to use each of these tools.
What makes Claude Code unbeatable? Skills.
Claude Code's real advantage over any competitor is extensibility via skills. With 748+ professional skills, he becomes an expert in any area — something that no other coding assistant offers.
Ver as 748+ Skills — $91. What is Google Antigravity
Google Antigravity is an IDE (integrated development environment) built with artificial intelligence at the center of it all. Unlike tools that "add AI" to an existing editor, Antigravity was designed from the ground up so thatAI agentsBe the first-class citizens of the development experience.
In practice, this means that you are not just using a text editor with smart autocomplete. You are using a tool where AI agents can navigate your entire project, understand the architecture, plan changes to multiple files, run tests, interpret errors, and iterate until the result is correct -- all autonomously or semi-autonomously.
The technical bases
- VS Code Fork:Antigravity is built on top of the VS Code source code. This means that all the extensions, themes and shortcuts you already know work. The learning curve for those coming from VS Code is practically zero
- Agent-first:the interface was redesigned to prioritize interaction with agents. Conversation panels, visualization of execution plans and history of agent actions are central elements, not peripheral
- Free (preview):During the preview phase, Antigravity is completely free. No artificial limits, no 14-day trial. Google is investing in massive adoption before monetizing
- Multi-model:natively supports Google's Gemini models (Gemini 3 Pro Preview, Gemini 3 Flash) and also allows you to connect external models such as Claude Opus 4.6 and Claude Sonnet via API
The name "Antigravity" is not by chance. The proposal is that software development is so light that it seems to defy gravity -- you describe what you want and the IDE does the heavy lifting.
2. How it works: agent-first architecture
To understand why Antigravity is different, you need to understand what "agent-first" means in practice. In most AI-enabled IDEs (including earlier versions of Cursor), the AI functions as areactive assistant: you ask for something, she responds, you ask for something else, she responds again. And ping pong.
In the agent-first model, AI works as aproactive agent. You define the objective and the agent plans the execution, executes the steps, checks the result, corrects errors and only delivers it to you when it is ready (or when it needs a decision that it cannot make alone).
The agent cycle
- Understanding:the agent reads the project context -- folder structure, dependencies, existing code, tests, documentation
- Planning:Creates a detailed execution plan. "I will modify 3 files, create 1 new one, adjust 2 tests"
- Execution:implements the plan, file by file, function by function
- Verification:runs automated tests, checks whether the code compiles, analyzes whether the result meets the original objective
- Iteration:If something failed, the agent identifies the error, corrects it and repeats the check. Without needing you to intervene
This cycle is what allows Antigravity to solve complex problems that involve changes to dozens of files. The agent does not lose track of the thread because it has access to the entire project and keeps the execution plan in memory.
Viewing plans
A unique feature of Antigravity is the execution plan panel. Before the agent starts making changes, you see a visual tree of everything it intends to do: which files will be created, which will be modified, in what order and for what purpose. You can approve the entire plan, reject specific steps, or request adjustments before execution begins.
This solves a real problem: in tools like Cursor, the agent often starts making changes and you only realize that something went wrong when you are already in the middle of the process. With plan view, you have control before any file is played.
3. Supported models: Gemini, Claude and more
Antigravity doesn't lock you into a single AI model. This flexibility is one of its biggest competitive differentiators.
Native Templates (Gemini)
| Model | Foco | Context window | Speed |
|---|---|---|---|
| Gemini 3 Pro Preview | Complex tasks, deep reasoning | 2M tokens | Average |
| Gemini 3 Flash | Fast tasks, high speed | 1M tokens | Alta |
Gemini models come integrated and have no additional cost during the preview. Gemini 3 Pro Preview is Google's cutting-edge model for code -- with a context window of 2 million tokens, it can analyze entire projects at once, something very few models can do.
Gemini 3 Flash is optimized for speed. Ideal for autocomplete, quick suggestions and tasks that don't require in-depth thinking. It responds in milliseconds, which keeps the workflow fluid.
External models via API
- Claude Opus 4.6:Anthropic's most powerful model, with 1M context and extended reasoning capabilities. Ideal for complex refactorings and architectural decisions
- Claude Sonnet:balance between speed and quality. Excellent for everyday tasks
- Other models:any model compatible with the OpenAI-style API can be connected via configuration
To connect an external model, you configure the API key in the Antigravity settings. The process takes less than 2 minutes and allows you to switch between templates with a keyboard shortcut.
Practical tip:use Gemini 3 Flash for autocomplete and quick tasks (zero cost) and switch to Claude Opus 4.6 or Gemini 3 Pro for complex tasks that require deep thinking. This combination maximizes speed and quality without cost overruns.
4. SWE-bench 76.2%: what this number means
Google reported that Antigravity, using Gemini 3 Pro Preview, achieved 76.2% on SWE-bench Verified. But what does this really mean for you?
What is the SWE-bench
SWE-bench is an industry-standard benchmark that tests the ability of AI agents to solve real-world software engineering problems. These are not academic exercises -- they are real issues from open source repositories like Django, Flask, Scikit-learn and other popular projects on GitHub.
Each benchmark issue includes a description of the bug or feature request, the project source code and the test suite. The agent needs to understand the problem, locate the relevant files, implement the solution and pass the tests. It is the most realistic test there is to measure the ability of an AI tool to code.
Context of the benchmarks
| Tool/Template | SWE-bench Verified | Data |
|---|---|---|
| Antigravity + Gemini 3 Pro | 76.2% | Mar 2026 |
| Claude Code + Opus 4.6 | 72.7% | Mar 2026 |
| Cursor + Claude Sonnet | ~65% | I estimated |
| GPT-4o (baseline) | ~48% | 2025 |
Antigravity's 76.2% is the highest number ever publicly recorded in this benchmark. This doesn't mean it's better at absolutely everything -- it means that, on standard software engineering problems, the Antigravity + Gemini 3 Pro system is exceptionally competent.
In practice, the difference between 72% and 76% may seem small, but in terms of additional problems solved, it represents dozens of complex issues that the system can resolve without human intervention. For development teams, this translates into hours of work saved per week.
Important:Benchmarks measure a specific slice of competence. SWE-bench tests bug and feature resolution in projectsPython. It does not test creating projects from scratch, UI/UX, integration with external APIs or many other day-to-day tasks. Use benchmarks as a reference, not as absolute truth.
5. Multi-agent system: the real difference
Antigravity's most ambitious feature is the multi-agent system. Instead of a single agent doing everything, Antigravity can orchestrate multiple agents working in tollel on the same project.
How it works in practice
Imagine you ask: "Refactor the authentication system to use JWT, update the tests and documentation." In a traditional tool, the agent would do everything sequentially. In Antigravity, he can delegate:
- Agent 1:refactor the authentication code
- Agent 2:updates unit and integration tests
- Agent 3:rewrites the API documentation
- Orchestrator:coordinates the three agents, resolves conflicts and ensures consistency
Agents share context but work in different areas of the code. When one agent needs the result of another (for example, the testing agent needs to know the new function signatures), the orchestrator manages the communication.
Real benefits
- Speed:Tasks that would take 15 minutes with a single agent can be completed in 5 minutes with multiple agents in tollel
- Quality:each agent can be specialized. The testing agent knows testing standards. The documentation agent knows technical writing standards
- Scale:For changes that affect dozens of files, tollelization makes a real difference
Claude Code also has multi-agent concepts (usingsub-agents), but the Antigravity implementation is more mature in terms of tollelization and visualization of what each agent is doing in real time.
6. Antigravity vs Cursor vs Claude Code
This is the section everyone wants to read. Let's compare the three tools in categories that matter in everyday life.
| Criterion | Google Antigravity | Cursor | Claude Code |
|---|---|---|---|
| Price | Free (preview) | $20/month (Pro) | $20/month (Pro) |
| Interface | Visual IDE (VS Code fork) | Visual IDE (VS Code fork) | Terminal (CLI) |
| Standard model | Gemini 3 Pro/Flash | Claude Sonnet / GPT-4o | Claude Sonnet |
| Multi-model | Yes (Gemini + external) | Yes (Claude, GPT, Gemini) | Sonnet, Opus, Haiku |
| Multi-agent | Yes (native) | Limited | Yes (sub-agents) |
| Maximum context | 2M tokens (Gemini 3 Pro) | Varies by model | 1M tokens (Opus) |
| Tab completion | Sim | Yes (market reference) | No (CLI) |
| Terminal access | Sim | Sim | Native |
| File access | Sim | Sim | Sim |
| Voicemod | No (yet) | Nao | Sim |
| AI skills/extensions | Basic | Rules | Skills (mature) |
| Maturity | New (preview) | Established (2 years) | Established (1+ years) |
Price: clear advantage of Antigravity
Free vs. $20/month is a strong argument. For those just starting out, for students, forfreelancerswho control every dollar, Antigravity eliminates the financial barrier. Cursor and Claude Code charge US$20/month on Pro plans, which is equivalent to approximately R$110-120/month at current rates.
The question is: when Google starts charging (and it will), what will the price be? The market expectation is that there will be a free tier with limits (similar to Gemini free in Google AI Studio) and a competitive paid tier. But this is speculation until the official announcement.
Shortcut for those who want the result fast
Everything you're reading becomes a ready template with 748 Skills.
See Skills $9 →Interface: Antigravity and Cursor tie, Claude Code is different
If you prefer a visual IDE with panels, file explorer, tabs and all the experience you already know from VS Code, Antigravity and Cursor are the options. Both are forks of VS Code and the transition is almost transparent.
The Claude Code is fundamentally different. It runs in the terminal. It does not have a graphical interface. For many people, this is a disadvantage. For others (especially developers who already live in the terminal), it's a plus -- less distraction, more speed, seamless integration with CLI-based workflows.
Agent quality: depends on the task
There is no single winner here. Antigravity shines in tasks that benefit from multi-agent and tollelization. Claude Code shines in tasks that require deep understanding of context and detailed instructions (skills). Cursor shines in the continuous workflow with Tab completion and inline edits -- for those who write code line by line, no one does it better.
7. Gemini 3 Pro Preview and Gemini 3 Flash
The Gemini 3 models are Antigravity's secret weapon. They are not available in any other IDE at this time -- they are exclusive to the Google ecosystem.
Gemini 3 Pro Preview
This is Google's top-of-the-line model for code tasks. With 2 million context tokens, it can literally process an entire medium-sized project in a single conversation. For reference, 2M tokens equates to approximately 300-400 thousand lines of code -- more than most projects you will work on.
Gemini 3 Pro Preview uses extended reasoning (similar to Claude's "thinking") for complex problems. He doesn't just generate code -- he thinks about the problem, considers alternatives, evaluates trade-offs and then implements it. This reasoning process is visible in the Antigravity interface, which allows you to follow and correct the course if necessary.
Gemini 3 Flash
Flash is built for speed. Latency is extremely low -- responses within 100-200 milliseconds for simple tasks. This makes Tab completion and inline suggestions virtually instantaneous. For the typing flow, you don't notice any delay.
The trade-off is that Flash doesn't have the same depth of reasoning as Pro. For simple fixes, localized refactorings and autocomplete, it's perfect. To redesign a system's architecture, use Pro.
Recommended strategy:Set up Gemini 3 Flash as the default template for autocomplete and quick interactions. Switch to Gemini 3 Pro (or Claude Opus 4.6) when you need to solve complex problems. This maximizes speed on a daily basis and power when needed.
8. When to use each tool
Instead of asking "which one is best," the right question is, "which one is best for me, right now, in this task?" Here is a practical guide based on real profiles and situations.
Use Google Antigravity when:
- Zero budget:you can't (or don't want to) spend US$20/month on IDE. Antigravity in preview and completely free
- Large projects:Gemini 3 Pro's 2M token window is the best on the market for projects with many files and complex dependencies
- Parallelizable tasks:When you need multiple parts of the project to be updated simultaneously, the native multi-agent shines
- Google ecosystem:If you already use Firebase, GCP, Google Cloud Run, native integration is a real differentiator
- Curiosity:Do you want to test the agent-first proposal without financial commitment?
Use Cursor when:
- Continuous typing flow:If you write code line by line and depend on intelligent Tab completion, the Cursor is still a reference
- Inline edits:The ability to select a piece of code, request a change, and see the diff before accepting is extremely polished in Cursor
- Stability:With 2 years on the market, Cursor has fewer bugs, better documentation and a more mature community
- Model flexibility:Cursor allows you to use Claude, GPT-4o, Gemini and others with ease. If you want to choose the model per task, the experience is well resolved
Use Claude Code when:
- Complex autonomous tasks:For projects where you describe the objective and want the AI to execute it from start to finish, Claude Code with Opus is unbeatable
- Non-technical professionals:Marketers, managers, designers who want to create entire projects using natural language find Claude Code the most accessible experience
- Specialized skills:Claude Code's skills ecosystem is the most mature. You install an "SEO audit" or "landing page" skill and Claude Code becomes an instant expert
- Terminal-first:If you already live in the terminal and prefer efficiency over a visual interface, Claude Code is the natural choice
- Voicemod:For long instructions or brainstorming, dictating is faster than typing. No other tool has this
The most common scenario: using more than one
Many professionals are using two or even three of these tools. Antigravity for free tasks and large projects. The Claude Code for automations with skills and autonomous tasks. The Cursor for intense coding sessions with Tab completion. There is no rule that says you need to choose just one.
9. Limitations and points of attention
Antigravity is impressive, but it's not perfect. Here are the points you need to know before adopting.
Preview = instability
As it is a preview tool, Antigravity still has bugs. Occasional crashes, inconsistent agent responses, integration with extensions that doesn't always work. If you depend on absolute stability for production, wait for the GA (Generally Available) version or keep Cursor/Claude Code as a backup.
Future price unknown
Free now doesn't mean free forever. Google has historically offered generous free tiers, but it has also historically charged competitive prices for premium tiers. Building your entire workflow on top of a tool whose future price is unknown is a risk that you need to accept consciously.
Immature AI extension ecosystem
Antigravity supports VS Code extensions (the traditional ones), but the ecosystem of extensions specific to the agent system is new. The equivalent of Claude Code "skills" or Cursor "rules" are still in the early stages. This will improve over time, but today it is a real limitation.
Internet addiction
All Antigravity models run in the cloud. No internet, no functional IDE. Cursor has the same problem. Claude Code too. But one point worth mentioning -- none of these tools work offline.
Privacy and data
Your code is sent to Google's servers for processing. Google says Antigravity user data is not used to train models, but the policy may change. If you work with sensitive code (financial, healthcare, government), check the privacy policies before sending anything.
10. How to start using today
The installation process is simple:
Step 1: download
Visit the official Google Antigravity website and download the installer for your operating system (macOS, Windows or Linux). The download is quick -- the installer is less than 200MB.
Step 2: Google account
You need a Google account to use Antigravity. When first opened, it will ask for login. If you are already logged into Chrome, the process is automatic.
Step 3: initial configuration
1. Escolha o modelo padrao (recomendado: Gemini 3 Flash)
2. Defina o tema (Dark/Light)
3. Importe configuracoes do VS Code (opcional)
4. Abra uma pasta de projeto
# Para conectar Claude (opcional):
Settings > AI Models > Add External Model
Cole sua API key da Anthropic
Step 4: first project
Open the agent command bar (Ctrl+Shift+A or Cmd+Shift+A on Mac) and describe what you want. For example: "Create a REST API with Express.js that manages a list of tasks, with CRUD endpoints and input validation." The agent will plan, show the plan and execute it after approval.
Step 5: explore
Try different types of tasks. Ask to refactor existing code. Ask to write tests. Ask to explain a complex passage. Ask to create documentation. The more you use it, the more you will understand where Antigravity shines and where it has limitations.
11. The future of IDEs with AI
Google's entry changes the game permanently. Until now, the AI IDE market was dominated by startups (Cursor, Windsurf) and Anthropic (Claude Code). With Google bringing the weight of its models, infrastructure and user base, competition intensifies dramatically.
What to expect in the next 12 months
- Falling prices:With Antigravity free in preview, Cursor and others will need to justify the price or offer more aggressive tiers. This is good for everyone
- Multi-agent as standard:What is now a distinguishing feature of Antigravity will become a mandatory feature. Cursor and Claude Code will intensify their multi-agent implementations
- Integration with native cloud:IDEs that connect directly to cloud providers (one-click deployment, automatic preview, integrated CI/CD) will be the next battleground
- Specialization:Generalist IDEs will coexist with specialized IDEs -- for mobile, for data science, for marketing tech, for DevOps. Each niche will have its optimized tool
- Skills as an ecosystem:Claude Code's concept of skills points to a future where IDEs have "app stores" of specializations. You install a skill and the IDE becomes an expert in any domain
The professional who will benefit most is not the one who chooses one tool and ignores the others. And those who understand the strengths of each one, use the right one for each context and invest in skills that enhance any tool.
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Ativar Superpoderes — $9FAQ
Yes, during the preview period Google Antigravity is completely free, including access to Gemini models. Google has not yet officially announced post-preview prices, but the expectation is that it will maintain a generous free tier with usage limits, similar to what it does with other products such as Firebase and Colab. Even when you start charging, the tendency is for the free tier to serve the majority of individual developers.
Antigravity supports multiple models. In addition to the native Gemini models (Gemini 3 Pro Preview, Gemini 3 Flash), you can connect Claude Opus 4.6, Claude Sonnet and other models via API. Just add your API key in the settings. This makes the tool flexible for those who already have a preference for a specific model or want to combine the best of each one.
It depends on your profile. If you want zero cost and already use the Google ecosystem, Antigravity is a solid choice. If you need deep integration with the terminal and prefer specialized skills, Claude Code remains superior in this regard. If you want a mature visual IDE with Tab completion as a reference, Cursor still has advantages. Many professionals are using more than one tool depending on the context -- and this is probably the smartest approach.