---
title: "AI Visibility Tools Compared: Ahrefs, Semrush, Profound | Code4X"
url: "https://code4x.dev/compare"
canonical: "https://code4x.dev/compare"
description: "How Code4X differs from traditional SEO platforms, generic AI visibility trackers, and manual agencies. Deterministic scoring versus keyword estimates."
format: "markdown-mirror"
updated: "2026-09-29"
agent_ready: true
---

# AI Visibility Tools Compared: Ahrefs, Semrush, Profound

> How Code4X differs from traditional SEO platforms, generic AI visibility trackers, and manual agencies. Deterministic scoring versus keyword estimates.

- **URL**: https://code4x.dev/compare
- **Format**: Machine-readable Markdown Mirror (RFC 9727 / Accept: text/markdown)
- **Publisher**: Code4X Agent Readiness Platform

---

**COMPARISON · UPDATED SEPTEMBER 2026**

# Which AI visibility tool should you use?

> It depends which question you need answered. Ahrefs, Semrush and Profound measure demand — whether AI mentions your brand. Free agent readiness scanners measure part of the supply side — whether your site can be read. Most teams need one of each, and we would rather say that than claim we replace both.

## Demand-side tools: is AI mentioning you?

| Tool | What it does well | Where it stops |
| --- | --- | --- |
| Ahrefs Brand Radar | AI visibility across a very large prompt corpus, plus bot and referral analytics from data you already trust | No technical readiness audit, no site score, no remediation |
| Semrush AI Visibility | Visibility, sentiment and a content analyser, integrated with an existing SEO workflow | Simulated prompts, demand side only, no agent readiness, no fixes |
| Profound | Purpose-built AI search visibility and answer tracking | Monitoring rather than engineering; nothing about whether your site can be read |

If you already pay for Ahrefs or Semrush, use what you have before buying a third tool. The marginal value of a second demand-side tracker is low.

## Supply-side tools: can AI read you?

| Tool | What it does well | Where it stops |
| --- | --- | --- |
| Lighthouse Agentic Browsing | Free, already in your browser, from Google | 4 experimental checks, pass/fail only, no tracking, no fixes |
| AgentGrade | Broad signal coverage with a 0–100 score, free scan | No longitudinal tracking, no remediation, no MCP delivery |
| Agent-Ready.dev | Careful checking against the Vercel spec and llmstxt.org | No remediation, no versioned comparison, no client product |
| Agent Checker | Drives a real agent through live tasks and scores the result | Testing rather than repair; no generated fixes |
| Code4X | 55 checks, versioned scoring, generated remediation code, MCP delivery | No client case studies yet. New practice. |

Run a free scanner first. Several are good, they cost nothing, and if one comes back clean you have learned something useful for free.

## So what is actually different about Code4X?

> Two things, and check-count is not one of them.

**Generated remediation.** Every tool above tells you what is broken. We build the file — the populated llms.txt from your own page inventory, the middleware for your framework, the corrected markup with a diff. Your developer reviews a change rather than starting a project.

**Versioned proof.** The re-audit runs on the rubric version your first audit used, so the before and after are measured with the same instrument. Most tools cannot tell you whether you improved, only what your score is today.

We would rather state that plainly than claim nobody else can count checks. Several of these tools are good and some cover things we do not.

## Where this is contested

This page is written by an interested party and you should read it that way. We have tried to name what each competitor does better, and where the category has moved past claims in our own earlier material — live agent task testing, for instance, is no longer something only we do.

The check that matters: ask any vendor here what happens to their product if Google ships a full agentic score in Lighthouse. If the answer is nothing, they were only ever selling a number.

**QUESTIONS**

## Frequently asked

### What is the difference between Ahrefs Brand Radar and an agent readiness audit?

Brand Radar measures demand: whether AI mentions your brand across a large prompt corpus. An agent readiness audit measures supply: whether an AI arriving at your site can discover, read and act on it. They answer different questions and most teams need both.

### Are free agent readiness scanners any good?

Several are genuinely useful and cost nothing, so run one first. They identify problems but none of them generate the fix or track change on a fixed rubric over time.

### Do I still need Ahrefs or Semrush?

If you already pay for one, keep it. A second demand-side tracker adds little, and neither one checks whether your site can be read by an AI crawler.

### What does Code4X do that others do not?

Generated remediation code rather than recommendations, and versioned before-and-after scoring on the same rubric so improvement is measurable rather than asserted.

**RELATED**

## Next

#### Pricing

What ours costs and why.

[Read →](/pricing)

#### Agency vs in-house

An honest cost breakdown.

[Read →](/aeo-agency-vs-engineering)

#### Guides

Ten technical guides, free.

[Read →](/guides)

## Run a free scanner. Ideally ours.

> Eight checks, fifteen seconds, no email. If it comes back clean we will tell you.

[Run the free scan→](/scan)
[Services & pricing](/services)

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