Why AI SEO Tools Exist
Traditional SEO tools (Ahrefs, SEMrush, Moz) measure Google rankings. They have zero visibility into how AI engines like ChatGPT, Claude, Perplexity, and Gemini decide which brands to recommend. By 2026, an estimated 30–40% of informational searches start in an AI engine — and that number is still climbing.
AI SEO tools — sometimes called AEO (Answer Engine Optimization) tools — fill that gap. They query AI engines directly, track whether your brand is mentioned, score your visibility, and identify why you're being left out of AI-generated recommendations.
Feature Matrix: What Each Tool Actually Does
✅ Full support · ⚡ Partial / limited · ❌ Not available
| Feature |
AISearch
StackHub
|
Profound | Otterly.AI | Peec AI | AthenaHQ |
HubSpot
AEO Grader
|
|---|---|---|---|---|---|---|
| Engine Coverage | ||||||
| ChatGPT tracking | ✅ | ✅ | ✅ | ✅ | ✅ | ⚡ |
| Claude tracking | ✅ | ⚡ | ❌ | ⚡ | ✅ | ❌ |
| Perplexity tracking | ✅ | ⚡ | ✅ | ✅ | ✅ | ❌ |
| Gemini tracking | ✅ | ❌ | ❌ | ⚡ | ⚡ | ❌ |
| Engines covered (total) | 4 | 2 | 2 | 3 | 3 | 1 |
| Visibility Tracking | ||||||
| Unified visibility score (0–100) | ✅ | ❌ | ⚡ | ⚡ | ⚡ | ⚡ |
| Citation gap analysis | ✅ | ✅ | ⚡ | ⚡ | ✅ | ❌ |
| Competitor tracking | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ |
| Hallucination detection | ✅ | ✅ | ⚡ | ❌ | ⚡ | ❌ |
| Historical trend charts | ✅ | ✅ | ✅ | ✅ | ⚡ | ❌ |
| Scan frequency (fastest plan) | Daily | Daily | Weekly | Weekly | Weekly | On-demand |
| Reporting & API | ||||||
| Exportable PDF reports | ✅ | ✅ | ✅ | ✅ | ⚡ | ❌ |
| Slack / email alerts | ✅ | ✅ | ⚡ | ✅ | ⚡ | ❌ |
| API access | ✅ Enterprise | ✅ Pro+ | ⚡ Beta | ✅ Growth+ | ❌ | ❌ |
| White-label / agency mode | ✅ Enterprise | ✅ | ❌ | ✅ | ❌ | ❌ |
| AEO Optimization Features | ||||||
| Content recommendations | ✅ | ✅ | ⚡ | ⚡ | ✅ | ✅ |
| Asset library / citation bank | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ |
| Free scan / free tier | ✅ Always free | ❌ | ⚡ Limited | ❌ | ❌ | ✅ Always free |
* Feature availability verified May 2026. Tool roadmaps change — verify current availability on vendor sites.
See How Your Brand Scores Across All 4 Engines
Free scan. 60 seconds. ChatGPT, Claude, Perplexity, and Gemini — your visibility score, top gaps, and actionable fixes.
Run Your Free Scan →Pricing Comparison 2026
Pricing as of May 2026. All figures in USD/month (annual billing where available). Contact vendors for current enterprise quotes.
| Tool | Free Tier | Starter | Growth / Pro | Enterprise |
|---|---|---|---|---|
| AISearchStackHub | ✅ Free scan | $99/mo 1 brand · weekly |
$299/mo 3 brands · daily |
$2,499/mo API + agency mode |
| Profound | ❌ | ~$200/mo | ~$500/mo | Custom |
| Otterly.AI | ⚡ 5 queries | ~$79/mo | ~$199/mo | Custom |
| Peec AI | ❌ | ~$99/mo | ~$299/mo | Custom |
| AthenaHQ | ❌ | ~$149/mo | ~$399/mo | Custom |
| HubSpot AEO Grader | ✅ Fully free | — | — | — |
* Competitor pricing estimated from public pages and review sites. May not reflect current promotions or recent changes.
Value-per-dollar comparison
At $99/mo, AISearchStackHub's Starter plan covers all 4 AI engines with weekly scans and specific citation gap recommendations. The equivalent coverage from competitors requires piecing together 2–3 tools at $79–199/mo each — for 2-engine coverage at best.
The free scan also has no equivalent: you get a real 0–100 score across all 4 engines with your top 3 gaps identified before spending a dollar.
Tool Profiles: Strengths, Weaknesses, Who It's For
AISearchStackHub
The only tool with full 4-engine coverage (ChatGPT, Claude, Perplexity, Gemini) in a single scan. The 0–100 unified score makes it easy to benchmark and track progress month-over-month. Citation gap analysis goes beyond "your score dropped" — it identifies the specific content types and authority signals you're missing and ranks them by impact. The asset library compounds over time, giving long-term brand authority that doesn't reset with algorithm changes.
✅ Strengths
- → All 4 engines in one platform
- → Free scan with real scores (not a gimmick)
- → Citation gap analysis with prioritized fixes
- → Asset library builds compounding authority
- → Hallucination detection + score-drop alerts
- → Daily scanning on Growth plan ($299)
⚠️ Limitations
- → Newer platform vs established competitors
- → API only on Enterprise plan ($2,499)
- → Fewer third-party integrations than Profound
Profound
Profound focuses on ChatGPT-first analytics with strong enterprise workflow features: team seats, shared dashboards, and custom reporting. Deep integration with ChatGPT tracking and prompt monitoring, plus solid content gap recommendations. Enterprise customers get dedicated support and custom data pipelines. Perplexity and Claude coverage is more limited.
✅ Strengths
- → Deep ChatGPT analytics and prompt tracking
- → Strong enterprise workflow and team features
- → Good citation gap and content recommendations
- → API access on Pro+ plans
⚠️ Limitations
- → Limited Gemini coverage
- → No free tier — trial only
- → Higher price point for equivalent features
- → ChatGPT-centric; misses Claude's full picture
Otterly.AI
Otterly.AI has a clean UX focused on prompt monitoring — you define specific prompts to track and it monitors your appearance across ChatGPT and Perplexity. Good for teams who already know which queries matter and want alerts when something changes. Historical trend data is solid. The platform is lighter on AEO optimization guidance.
✅ Strengths
- → Clean, focused UX for prompt monitoring
- → ChatGPT + Perplexity coverage
- → Good historical tracking and alerts
- → More affordable entry price than Profound
⚠️ Limitations
- → No Claude or Gemini tracking
- → Limited AEO optimization guidance
- → No asset library or citation bank
- → API in beta only
Peec AI
Peec AI is built for agencies managing multiple client brands. Multi-client dashboards, white-label PDF reports, and solid API access on Growth plans make it a practical choice for agency teams. Coverage spans ChatGPT, Perplexity, and partial Gemini. Limited Gemini depth and no free trial are the main friction points.
✅ Strengths
- → Multi-client dashboard design
- → White-label reports
- → API access on Growth plan
- → Good Slack + email alerting
⚠️ Limitations
- → No Claude tracking
- → Gemini coverage is partial
- → No free tier
- → Lighter on AEO guidance vs AISearchStackHub
AthenaHQ
AthenaHQ is a newer entrant with 3-engine coverage (ChatGPT, Claude, Perplexity) and solid content recommendation features. The platform is building out its feature set actively and has a modern dashboard design. No free tier or API yet limits adoption. Watch this one — the trajectory is strong but it's not yet at feature parity with the leaders.
✅ Strengths
- → Claude + ChatGPT + Perplexity coverage
- → Modern UX and clean dashboard design
- → Good content recommendation quality
⚠️ Limitations
- → No Gemini tracking
- → No API access yet
- → No free tier
- → Smaller feature set vs mature platforms
HubSpot AEO Grader
HubSpot's AEO Grader is a content-structure scoring tool — it evaluates whether your page follows AEO best practices (clear answer formatting, FAQ blocks, schema markup, etc.). It does NOT query live AI engines or measure actual brand visibility. Think of it as an AEO audit checklist, not a visibility measurement tool. Useful for quick content audits; not a replacement for actual AI engine monitoring.
✅ Strengths
- → Completely free, no signup required
- → Good starting checklist for AEO content structure
- → HubSpot brand credibility
⚠️ Limitations
- → No live AI engine queries
- → Doesn't measure actual brand visibility
- → No competitor tracking or monitoring
- → Single-page audit only
The Verdict: Which Tool Should You Use?
⚠️ The coverage gap nobody talks about
Most tools track 1–2 engines. But brands score differently across all four — a brand can be at 80/100 on ChatGPT and 30/100 on Claude simultaneously. If you're only monitoring one engine, you have a false sense of your AI visibility. The minimum viable AEO stack requires 4-engine coverage to see the full picture.
Don't Guess. Get Your Actual Score.
Free scan across ChatGPT, Claude, Perplexity, and Gemini. Your 0–100 visibility score, top 3 citation gaps, and what to do about them. No credit card.
Run Your Free Scan →Frequently Asked Questions
What is the best AI SEO tool in 2026?
For multi-engine AEO, AISearchStackHub is the most comprehensive option — it tracks all four major AI engines (ChatGPT, Claude, Perplexity, Gemini) with a unified 0–100 score and citation gap analysis. For enterprise ChatGPT focus, Profound. For a free content audit, HubSpot AEO Grader.
What is AEO and how is it different from SEO?
AEO (Answer Engine Optimization) optimizes your brand to be cited by AI models like ChatGPT, Claude, Perplexity, and Gemini. Traditional SEO targets Google's ranked results. AI engines select brands based on entity clarity, structured content, and citation authority — not backlink graphs. The two practices overlap but are not the same. Learn more at our What is AEO? guide.
Do AI SEO tools track all four major AI engines?
Most don't. Otterly.AI and Peec AI focus on 2–3 engines. AthenaHQ covers 3. Only AISearchStackHub tracks ChatGPT, Claude, Perplexity, and Gemini in a single scan — with one unified score rather than four separate dashboards.
How much do AI SEO tools cost in 2026?
Free tiers: AISearchStackHub (free scan), HubSpot AEO Grader (fully free). Paid plans: $79–$200/mo for single-brand entry. $299–$500/mo for multi-brand or daily scanning. $899–$2,499/mo for enterprise with API and agency mode.
What features should I look for in an AI SEO tool?
Five non-negotiables: (1) coverage of all 4 major engines; (2) citation gap analysis; (3) monitoring frequency (weekly minimum); (4) actionable recommendations, not just scores; (5) API access if you have reporting integrations. Most tools only check 2 or 3 of these boxes.
Is there a free AI SEO tool?
Yes. AISearchStackHub's free scan gives a real 0–100 score across all 4 AI engines with your top 3 citation gaps — no signup or credit card required. HubSpot's AEO Grader is also free but limited to content structure scoring without live AI engine checks.