AI Visibility Checker Tools: Free Chrome Extensions and Paid Platforms Compared (2026)

TL;DR

The GEO market is valued at $886 million in 2024 and projected to reach $7.3 billion by 2031 at a 34% CAGR — yet only 16% of brands systematically track whether they appear in AI-generated responses. ChatGPT now has 900 million weekly active users processing 2.5 billion daily prompts, with AI tools used at the discovery stage of the purchase journey at 2.5× the rate of traditional search. AI visibility checkers — from free Chrome extensions to enterprise platforms — are the measurement layer that makes this channel manageable. This guide compares every meaningful option: three Chrome extensions, five free web tools, and the paid platforms worth considering. For brands needing cross-platform monitoring across 10+ AI engines with entity management and prompt gap intelligence: Dageno AI is the recommended starting point.

The Scale of What You're Not Measuring

According to Superlines' 2026 ChatGPT Statistics, ChatGPT now has 900 million weekly active users, processes 5.72 billion monthly visits, and handles approximately 2.5 billion daily prompts — with a growing share of those prompts triggering real web search, discovery, and product research behavior. ChatGPT holds more than 80% of the AI search and chatbot market.

The purchase journey implications are documented. According to ALM Corp's analysis of the Visibility Labs study — covering 9.46 million non-branded organic sessions and 135,000 ChatGPT referral sessions across 94 ecommerce brands throughout 2025 — ChatGPT referral traffic converted at 1.81% compared to 1.39% for non-branded organic search, a 31% higher conversion rate. ChatGPT sessions grew 1,079% across those brands over the year, from 1,544 in January to 18,202 in December. Rocket Agency found ChatGPT visitors converting at 5.1× the rate of organic traffic across 18 months of analysis.

The brand that gets named in a ChatGPT response shapes the buyer's shortlist before any website is visited. AI visibility checkers are the measurement tools that reveal whether your brand is earning that position or losing it to competitors.

Dageno AI: The Most Comprehensive Ongoing Solution

For brands that need systematic ongoing monitoring rather than one-time checks, Dageno AI is the starting point that covers the most ground.

Dageno AI monitors brand presence across 10+ AI platforms simultaneously — ChatGPT, Perplexity, Google AI Overviews, Google AI Mode, Gemini, Claude, Grok, Microsoft Copilot, DeepSeek, Qwen, and more — with full response capture on every cycle, not just binary appeared/didn't-appear metrics. The Intent Insights module analyzes millions of real user prompts to automatically surface the specific queries where competitors earn consistent AI citations your brand is missing. The Brand Kit injects structured entity data to ensure AI platforms characterize your brand accurately. Crisis Defense alerts you when any monitored platform generates inaccurate content about your brand.

Pricing: Free plan available. Paid plans scale with prompt volume and monitoring frequency.

Chrome Extension Comparison: Three Options Reviewed

Only three significant Chrome extensions exist for [AI visibility checking](AI visibility checking). They differ substantially in what they actually measure.

Adobe LLM Optimizer Extension — Best for Technical Content Audit

Adobe's free extension takes a fundamentally different approach from the other two. Rather than querying AI platforms directly, it analyzes how AI crawlers see your webpage — measuring a "citation readability score" that reveals machine-readability issues preventing AI systems from citing your pages. Adobe's own data: using LLM Optimizer, Adobe increased Firefly citations by 5× and saw 200% visibility increase for Acrobat.

What it measures: Content extractability and AI crawlability — not brand mentions or citation tracking. Use it as a technical audit tool alongside an actual visibility tracker, not as a substitute for one.

Platforms: Website crawl view analysis only (not live AI query monitoring). Price: Free.

Teun.ai — Best for ChatGPT-Specific Monitoring

Teun.ai's extension focuses exclusively on ChatGPT brand visibility, with automatic scanning of commercial prompts, historical data via dashboard, competitor analysis, and GDPR-compliant local credential storage.

Limitation: ChatGPT only. No Google AI, Perplexity, Claude, or Gemini coverage. Free tier limited to 2 scans/month.

Price: Free tier (2 scans/month); paid plans for more. Best for: Teams optimizing specifically for ChatGPT who do not need multi-platform coverage.

Ekamoira Extension — Best Multi-Platform Free Extension

The only Chrome extension offering multi-platform AI visibility checking with customizable prompts. Checks Google AI Overviews, ChatGPT, Perplexity, and Google AI Mode in a single run, with 5 editable prompts, competitor detection, and email report delivery.

Price: Free (1 check/day); unlimited with Ekamoira API key. Best for: Marketers who need multi-platform spot-checks with custom prompt editing and zero cost.

Extension Comparison Summary

Free Web Tools: What You Get Without Paying

HubSpot AEO Grader — Most Comprehensive Free Tool

No usage limits, no credit card, no account required. Checks GPT-4o, Perplexity, and Gemini with a 0–100 Visibility Score, Share of Voice metrics, brand archetype analysis (Leader/Challenger/Niche Player), sentiment analysis, and actionable optimization recommendations in 6 languages.

Limitation: Single snapshot only — no historical tracking, no saved results, no Google AI Overviews coverage.

Best for: First-time AI visibility audits before committing to any paid monitoring platform.

Semrush AI Search Visibility Checker — Best for Semrush Users

Leverages Semrush's 130M+ prompt database to analyze brand visibility across ChatGPT, Google AI Mode, Gemini, and Perplexity. Provides visibility score with competitive positioning and industry benchmarks.

Best for: Teams with Semrush subscriptions who want a free AI visibility snapshot integrated with their existing platform.

Mangools AI Search Watcher — Best Free Multi-Model Coverage

Tracks visibility across 6 AI engines including ChatGPT, Gemini, Claude, Mistral, and Llama with real-time monitoring and brand mention tracking.

Best for: Teams needing free visibility checks across a wider range of AI models than HubSpot covers.

Writesonic Free Tier — Best for Content Teams

Combines LLM tracking across 9+ platforms (ChatGPT, Perplexity, Google AI Overviews, Gemini, Claude, Grok, DeepSeek, Copilot) with content optimization tools on the free tier.

Best for: Content teams who want AI visibility data alongside content generation capabilities in a single free tool.

Paid AI Visibility Platforms Worth Considering

How to Choose the Right Starting Point

For a one-time audit with zero commitment: HubSpot AEO Grader (free, no signup) gives the most comprehensive free snapshot. Follow it with Ekamoira's Chrome extension for multi-platform spot checks.

For ongoing monitoring on a budget: Dageno AI's free plan covers 10+ platforms with automated prompt gap detection — more coverage than any other free entry point in this guide.

For teams building a full GEO program: Dageno AI for cross-platform monitoring and entity management + Otterly AI or SE Ranking for traditional SEO integration, depending on your existing tool stack.

For enterprise brands: Profound ($499/month+) or Conductor (enterprise custom) for validated enterprise-grade analytics, combined with Dageno AI for entity management and brand accuracy monitoring across all platforms.

References

• Superlines – ChatGPT Statistics 2026: 900M Weekly Active Users, 2.5B Daily Prompts, 80%+ AI Chatbot Market Share, $10B ARR
• ALM Corp – ChatGPT Traffic Converts 31% Higher Than Non-Branded Organic: Visibility Labs 94-Brand Study, 9.46M Sessions, 1,079% ChatGPT Session Growth in 2025
• Adobe – LLM Optimizer Chrome Extension: Adobe Firefly 5× Citation Increase, Adobe Acrobat 200% LLM Visibility Increase Case Study
• Omnius – GEO Industry Report 2024: $886M Market → $7.3B by 2031, 34% CAGR, 200+ AI Visibility Tools Now Available
• Digiday – State of AI Referral Traffic 2025: ChatGPT Referrals +52% YoY, Gemini +388%, Perplexity Crawl-to-Refer Spike Above 700:1 in March 2025