Claude Code vs Antigravity: 100 Hours Testing Both — Which Should You Learn?

What you can actually set up from this

Extracted from the video's own transcript — the specifics the original summary left out.

Reproducible steps

1. The structural difference, before any benchmark

   Claude Code is terminal-first — a CLI that plugs into the environment you already use, so your editor, keybindings and extensions stay put. You build the workflow on top of the tool. Antigravity is a standalone IDE (widely taken to be a VS Code fork), so extensions and shortcuts carry over but you are opening a different application. It has a manager view showing multiple agents working in parallel across workspaces and a built-in browser agent. One gives you primitives, the other gives you an environment to move into.

2. Entry points differ sharply

   Claude Code has four: the terminal CLI (installed with npm, the most feature-complete mode), a VS Code extension with inline diffs and plan review, a desktop app, and a browser version with no install. A few advanced features are CLI-only. Antigravity has one front door — you download the app; its CLI command only launches the IDE.

3. Where each is stronger

   Claude Code's advantages are planning depth (a read-only plan mode that maps multi-file work and asks clarifying questions before touching anything, with adjustable reasoning depth) and codebase fit — it reads existing patterns and naming conventions so generated code matches rather than feeling bolted on. Antigravity's advantage is building full apps and front ends from scratch, and specifically design taste on UI/UX work.

4. Both let the model do the deciding

   Claude Code defaults to Claude models, Antigravity to Gemini; both can be switched with some configuration. Both tools are free — you pay for tokens. The harness shapes how the model works, but the model sets the ceiling, so a comparison between the tools at different model tiers tells you almost nothing.

Gotchas

• <strong>Antigravity drifts from its own rules on long projects.</strong> It can build perfectly to spec on day one and gradually ignore the original guidelines by day three. This is a documented pattern with a thread on Google's own developer forums. The presenter notes it is broadly true of any coding agent, but calls it out as more pronounced here.
• Benchmark figures cited, with their caveat: Claude Opus 4.6 in Claude Code at 80.9% on SWE-bench Verified against Gemini 3 Pro in Antigravity at ~76.2%. Both are full harness-plus-model scores, and Google has not published its testing methodology the way Anthropic has, so this is not apples to apples.
• Productivity claims, neither of which is a controlled study: Anthropic's engineering team reported a 50% productivity gain and 67% more pull requests merged per engineer per day; an independent 21-day test across 12 projects reported 60-70% faster development for Antigravity, 94% of generated code passing linting clean, and 73% of tasks completed with no human intervention.
• <strong>Both have burned users on cost or quota.</strong> Claude Code had a caching bug in March 2026 that inflated token costs by roughly 10-20x, draining Max-plan session limits in under two hours. Antigravity's quota system has locked Pro users out for a full week after hitting limits, on a credit system that does not clearly explain what a credit buys.
• Maturity gap: Claude Code is production-released with multiple updates per week. Antigravity was still in public preview as of April 2026, with reported login issues, Windows bugs and agents getting stuck in loops.
• One independent task-speed test had Claude Code at ~4 minutes against Antigravity's ~8 — which contradicted the presenter's own impression that Antigravity felt faster. Worth noting as a case where a single measured number disagrees with lived experience.
• Context loss is real on both, even at a 1M-token window, once you are 40+ prompts deep with heavy tool use on a real codebase.