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Claude Code vs Codex vs Antigravity: Rebuilding an App From Screenshots

In one qualitative Foqos screenshot recreation, Codex was judged the closest visual match, Claude Code had working toggles but added unseen controls, and Antigravity was polished but less faithful in details.
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In one screenshot-only recreation of Foqos, an open-source focus app, Codex was judged the closest visual match overall. Claude Code reportedly produced working toggles but added controls that were not visible in the supplied screenshots, while Google Antigravity made a polished version that missed some visual details. The comparison is a single author’s qualitative account—not a measured benchmark—so it suggests what each tool did in that run, not which one will always reproduce an interface best.

What the screenshot-only test asked the agents to do

The comparison used screenshots of Foqos, an app for blocking distracting apps and staying off the phone. Each coding agent received the same reference images in its own directory and was asked to recreate the visible screens, navigation, and interactions in React. No original source code or design files were supplied, according to the article.

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For features that would ordinarily depend on a backend or operating-system access, the implementations could use mock or local data. The prompt also told the agents not to look online or search GitHub, documentation, or other sources for the original app. The author chose Foqos because it is relatively niche and visually distinctive, aiming to make the exercise about reading the screenshots rather than recognizing a famous interface.

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How the three recreations compared

Agent What the author observed Reported limitation
Codex Closest overall match, particularly in layout proportions, spacing, card shapes, icon treatment, and typography. The app name appeared as “Fogos” instead of “Foqos.”
Claude Code Reported as the only version with working toggles. Added “Enable Live Activity” and “Strict Mode” controls that were not in the supplied partial screenshot of the new-profile page.
Google Antigravity Described as polished. Took more design liberties and missed some subtle spacing and activity-grid color distinctions.

The author says the added Claude controls are present in the real app, but not in the screenshot provided for that page. The article reports that Claude explained them as an inference from common focus-app conventions; that is the author’s account of the exchange, not independent evidence of the model’s internal reasoning.

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Which agent was best at rebuilding the app?

For this particular run, the author’s answer was Codex on overall visual resemblance. That judgment was based on visual qualities such as spacing and typography, not a published score. It does not establish that Codex is consistently the best choice for screenshot-based interface work, or that it would win on a different app, prompt, or set of screenshots.

The results also show why visual similarity and implementation behavior should be assessed separately. Claude’s toggles were a reported interaction strength, while the added controls illustrate a fidelity risk: a plausible feature can still be wrong when the task is to reproduce only what the reference shows. Antigravity’s polish likewise did not guarantee the closest match to small visual details.

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What this comparison does—and does not—prove

The account says none of the three recreations was perfect. It offers useful qualitative observations from one exercise, but no numerical visual-fidelity scores, blind ratings, repeated trials, independent evaluator, publicly inspectable screenshot set, source code, or timing data. “Almost pixel for pixel” should therefore be read as an impression, not a measured accuracy result.

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The reported configurations were “Opus 5” for Claude Code, “GPT-6 Sol” for Codex, and “Gemini 3.1 Pro” for Antigravity, with higher reasoning enabled. These are details given in the article’s account; they are not independently verified here as product versions or fully specified configurations.

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How to make a more useful comparison yourself

If you are choosing an agent for a real screenshot-to-React task, use the same inputs and conditions for every run. Judge more than the first visual impression:

  • Visual fidelity: compare layout, spacing, typography, colors, and icon shapes against the reference.
  • Coverage: check whether all supplied screens and visible navigation states are represented.
  • Interaction: test the controls that appear in the screenshots, rather than assuming they work because the page looks right.
  • Invented content: note added labels or controls that are not supported by the images.
  • Effort: record time and iteration count if speed matters to your project.

Keep the screenshot set, framework, prompt, and runtime conditions consistent, and repeat the comparison if you want to draw conclusions beyond a single run. The Foqos account discusses several relevant dimensions, but does not supply a standardized scoring method or timing results.

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