What is the best AI visibility audit tool in 2026?

RadarLLM offers the best value for SMBs: full audit across 4 AI engines, deployable fix files (robots.txt, llms.txt, JSON-LD), professional PDF report and one-time payment with no subscription. For continuous agency monitoring, Otterly.ai is a complementary alternative.

Do you need a monthly subscription to audit your AI visibility?

No. Most tools offer monthly subscriptions ($29 to $989/month), but RadarLLM offers a complete audit as a one-time payment ($49-199). Continuous monitoring is useful for large brands, but for SMBs, a one-shot audit with fix files delivers better ROI.

2026-04-0812 minComparison

7 best AI visibility audit tools in 2026 (comparison)

Cyril Cretin

Founder RadarLLM.ai

The AI visibility market is booming in 2026, but it remains fragmented. Dozens of tools promise to measure your presence on ChatGPT, Gemini and Perplexity. The problem: most monitor, very few fix. Here’s our honest ranking of the 7 best tools, from enterprise to SMB.

For this comparison, we evaluated each tool on 5 criteria: AI engine coverage, technical audit depth, fix file generation, pricing model, and value for money for SMBs.

The 7 best tools ranked

1. RadarLLMOur pick

$49-199 one-time

“The AI audit that fixes, not just measures”

✓One-time payment (no subscription), fix files ZIP included (robots.txt, llms.txt, JSON-LD)

✓4 AI engines tested live (ChatGPT, Gemini, Perplexity, Claude) + professional PDF report

✓Full EEAT analysis + AI-Ready score out of 100 with 6 modules (Performance, SEO, LLM, AEO, GEO, EEAT)

–No continuous monitoring (one-shot audit, re-audit at D+30 for Expert tier)

–Newer player in the market (launched in 2026)

Best for: SMBs, freelancers and agencies wanting immediately actionable results

2. Otterly.ai

$29-989/month

“Daily AI search monitoring for agencies”

✓25+ GEO audit factors, geographic intelligence, prompt tracking

✓Multi-client dashboard ideal for agencies

✓Citation data and trend tracking over time

–No fix file generation (robots.txt, llms.txt, JSON-LD)

–Monthly subscription only, no one-time payment option

Best for: Agencies managing multiple brands needing daily tracking

3. Profound

$99-$399+/month

“Enterprise AI visibility intelligence”

✓10+ AI engines analyzed, patented "Query Fan-outs" technology

✓HIPAA compliant, suitable for regulated industries (healthcare, finance)

✓Advanced analytics dashboard with market segmentation

–$399+/month minimum, overkill for SMBs

–No fix files or downloadable PDF report

Best for: Fortune 500 companies and enterprise marketing teams

4. Peec AI

€89-499/month

“Brand sentiment tracking across AI engines”

✓Sentiment tracking (positive/neutral/negative) per AI engine

✓Multi-country and multi-language coverage

✓Fast-growing: 4M+ ARR, constantly evolving product

–No technical depth (no robots.txt, schema, or EEAT analysis)

–Expensive at scale for multiple brands

Best for: Mid-market brands tracking their AI reputation

5. HubSpot AEO Grader

Free

“Free baseline diagnostic to get started”

✓Completely free, 5-dimension score

✓Native CRM integration with HubSpot

✓Good entry point to discover AEO

–Surface-level analysis only (no real LLM testing)

–No fix files, no detailed technical audit

Best for: First-time assessment, HubSpot users

6. LLMrefs

Freemium

“Affordable AI keyword tracking”

✓10+ AI engines tracked, accessible freemium model

✓SEO-friendly interface familiar to search professionals

✓Very low entry cost to start AI tracking

–No technical audit (no robots.txt, schema, or EEAT analysis)

–Limited insights: position tracking without actionable recommendations

Best for: SEO professionals adding AI tracking to their existing stack

7. Semrush AI Toolkit

+$99/month

“AI add-on for the Semrush SEO suite”

✓130M+ prompts analyzed, integrated with Semrush SEO data

✓Broad coverage if you already use Semrush

✓Historical SEO data combined with AI data

–+$99/month on top of existing Semrush subscription

–AI remains secondary in the Semrush ecosystem, not specialized

Best for: Existing Semrush users wanting to add the AI layer

Summary comparison table

Tool	Pricing	Fix Files	AI Engines	Best For
RadarLLM	$49-199 one-time	ZIP included	4	SMBs, freelancers
Otterly.ai	$29-989/mo	No	6+	Agencies
Profound	$99-399+/mo	No	10+	Enterprise
Peec AI	€89-499/mo	No	5+	Mid-market brands
HubSpot AEO	Free	No	0	Discovery
LLMrefs	Freemium	No	10+	SEO pros
Semrush AI	+$99/mo	No	4+	Semrush users

Our verdict

Most tools in this comparison monitor your AI visibility. That’s useful, but not enough. Knowing you’re invisible doesn’t make you visible. RadarLLM is the only tool that audits AND delivers deployable fix files (robots.txt, llms.txt, JSON-LD, meta tags) in a one-time payment, no subscription.

For agencies managing multiple brands with daily tracking needs, Otterly.ai is an excellent complement. For enterprise teams with compliance requirements, Profound remains the reference. And for a free first assessment, HubSpot AEO Grader gets the job done. But if you want a full audit with ready-to-upload fixes, RadarLLM offers the best value on the market.