Three major companies just placed competing bets on the future of AI-assisted coding, and the choice between them now costs real money and engineering time. Google shipped Antigravity as a free agent-first platform that hands off entire tasks to AI without waiting for human approval. Anysphere kept building Cursor into a standalone IDE (integrated development environment) that made autonomous coding a mainstream habit. Anthropic doubled down on Claude Code, a terminal-native agent with no graphical editor at all. Each one turns a prompt into working software, but they do it in genuinely different ways.

What Makes These Three Tools So Different From Each Other?

The differences run deeper than interface design. Google Antigravity, announced on November 18, 2025, treats the editor, terminal, and browser as one unified surface that an agent can act across, planning a task, executing it, and verifying the result without a human approving every step. It launched as a free public preview and expanded into Antigravity 2.0 at Google I/O 2026, adding a desktop app, a command-line interface (CLI), and a software development kit (SDK).

Cursor comes from Anysphere, founded in 2022 by four MIT students: Michael Truell, Sualeh Asif, Aman Sanger, and Arvid Lunnemark. The editor itself launched in March 2023, when GitHub Copilot dominated the AI coding market. Anysphere's funding trajectory has been extraordinary: the company reached a $29.3 billion valuation in a Series D round co-led by Accel and Coatue, with Nvidia and Google joining the cap table as new investors. By April 2026, Anysphere was reportedly in talks for a further round near a $50 billion valuation.

Claude Code takes the opposite design bet from both. There is no dedicated window, no file tree, no click-to-accept diff view by default. It lives in the terminal, reads and edits files directly, runs tests, and reports back in text. Anthropic bundles it into paid Claude subscriptions rather than selling it as a standalone product, which means its price is really the price of a Claude plan. That single decision shapes almost everything else about how teams evaluate it against Antigravity and Cursor.

How Do the Pricing Models Compare Across These Tools?

Pricing across all three tools reveals a strange convergence at the top tier, but the entry points tell a different story. Here is how they stack up:

• Antigravity: Free during public preview, with heavier usage drawing on Google AI Pro (around $20 per month) or Google AI Ultra (reported between $100 and $200 per month for higher limits)
• Cursor: Free Hobby plan available, with Pro at $20 per month and Ultra at $200 per month
• Claude Code: No standalone free tier; requires a paid Claude plan starting at $20 per month (Pro) or $17 per month when billed annually, with Max 5x at $100 per month and Max 20x at $200 per month

GitHub Copilot remains the cheapest paid entry point in the category at $10 per month for its Pro plan, which is exactly why Microsoft keeps winning the budget-conscious segment. Windsurf, another competitor, quietly repriced in March 2026, moving its Pro plan from $15 to $20 per month and Teams from $30 to $40 per seat, landing it exactly on Cursor's numbers instead of undercutting them.

Claude Code's Max 5x and Max 20x tiers exist specifically for developers who burn through tokens fast on agentic, multi-file tasks. Anthropic doubled the usage limits on those paid plans on May 6, 2026, a sign that the original caps were biting harder than the company expected.

Which AI Models Can Each Tool Actually Use?

The single biggest structural difference is model choice. Antigravity is the only one of the three that hands you a menu spanning three different AI labs in one interface: Google's own Gemini 3 Pro, Anthropic's Claude Sonnet 4.5, and an open-weight GPT-OSS option. Cursor lets you pick between Claude and GPT models too, but stays inside a conventional editor shell. Claude Code has no model picker at all. You get Anthropic's models, full stop, which is either a limitation or a feature depending on how much you trust one lab's outputs.

What Are the Key Differences in How These Agents Actually Work?

Beyond pricing and models, the tools differ in core agent behavior and ecosystem integration. Here is what separates them:

• Agent Mode: Antigravity treats agentic behavior as core to the product, with planning, execution, and verification built in. Cursor offers Composer multi-file agent mode within its IDE. Claude Code is entirely agentic by design, with no non-agentic fallback
• Browser Control: Antigravity agents can drive a browser directly, allowing them to interact with web interfaces. Cursor and Claude Code have no native browser control capability
• IDE Ecosystem: Antigravity offers its own editor plus CLI and desktop app. Cursor is a standalone IDE only. Claude Code is terminal-first and pairs with any existing IDE
• Context Window: Cursor claims a 200,000-token context window for project-wide understanding. Antigravity and Claude Code both support project-wide codebase indexing, though specific token limits vary

All three tools support Model Context Protocol (MCP), a standard that allows AI agents to interact with external tools and data sources. This means developers can extend each tool's capabilities beyond what ships in the box.

Why Does This Matter for Teams Choosing an AI Coding Assistant?

Most teams choosing an AI coding assistant right now are really choosing between five tools, not three. GitHub Copilot and Windsurf remain viable options depending on budget and workflow preferences. The choice between Antigravity, Cursor, and Claude Code depends on whether a team values free access and model flexibility (Antigravity), a polished standalone editor experience (Cursor), or terminal-native integration with existing workflows (Claude Code). Each one solves the same problem, turning a prompt into working software, but picking the wrong one costs real money and real engineering time.