Top 12 tools, ranked
Ranked by AI search citation coverage, multi-engine support, execution depth, and real-world traction. Click any tool to visit its site.
1. RankAI Free Audit
Free AI search audit that baselines your citation share, opportunity map, and structural fix list — no credit card required.
The RankAI free audit is the most comprehensive free entry path on this list. It surfaces your AI search opportunity map, current citation baseline, and the structural fixes that would close the gap. No card required to run it. Paid plans start at $49/mo Starter (RankAI pricing page, May 2026) once you want execution.
Best for: Anyone evaluating an AI SEO platform or wanting a baseline before committing to paid tools.
Pros
- No credit card required
- Full opportunity map + opportunity sizing
- Citation share baseline across major engines
- Structural fix recommendations
- Run in minutes
Cons
- Audit only — execution requires paid plan ($49/mo Starter and up)
2. AI Search Visibility Checker
RankAI's free standalone tool for spot-checking your brand's presence in AI search answers across major engines.
Best for: Quick brand-presence spot-checks for marketing teams evaluating AI search exposure.
Pros
- Free standalone, no signup required
- Spot-check brand presence across AI engines
- Useful for one-off evaluation
Cons
- Spot-check tool — not continuous monitoring
3. AI Citation Tracker
RankAI's free standalone tool for tracking which AI engines are citing your brand on specific prompts.
Best for: Per-prompt citation checks during content evaluation or competitor research.
Pros
- Free standalone
- Per-prompt citation evidence
- Cross-engine view
Cons
- Limited prompt volume vs paid monitoring tools
4. GEO Score Calculator
RankAI's free GEO readiness calculator. Estimates your domain's score for getting cited in generative engines.
Best for: Quick GEO readiness baseline before investing in deeper monitoring or execution.
Pros
- Free standalone
- GEO readiness benchmark
- Useful for self-evaluation
Cons
- Score-based — not a substitute for full audit
5. Brand Mention Monitor (AI)
RankAI's free brand mention monitoring tool for tracking AI engine references to your brand.
Best for: Brand teams wanting a free way to spot-check AI mentions across major engines.
Pros
- Free standalone
- AI engine brand-mention tracking
- No subscription required
Cons
- Spot-check tool — not full historical monitoring
6. AirOps Insights (Free Tier)
AirOps free Insights tier covers 1 user, 1 brand kit, 5 knowledge base sources, and access to 30+ AI models.
Best for: In-house teams wanting a generous free tier to evaluate AI search monitoring and content workflows.
Pros
- Generous free tier (AirOps pricing page, May 2026)
- 1 brand kit + 5 knowledge base sources
- Access to 30+ AI models
- Tracks ChatGPT, Perplexity, Google AI Overviews, Gemini, Claude
Cons
- Workflow builder (Quill) needs engineering capacity to wire up
- Solo / Pro / Enterprise tiers sales-led above the free tier
7. Otterly Trial
14-day free trial of Otterly. Lightweight AI search monitoring across 4 engines plus GEO content audits.
Best for: Brand teams wanting to evaluate transparent monitoring before committing to the $25/mo annual Lite plan.
Pros
- 14-day no-credit-card trial
- 4 engines in plan: ChatGPT, Google AI Overviews, Perplexity, MS Copilot
- GEO content audits included
Cons
- Trial only — Lite tier is $29 monthly or $25 annual (Otterly pricing page, May 2026)
8. Rankscale Try Pro for Free
Rankscale Try Pro for Free path. Familiar SEO rank-tracker UX extended to AI search with credit-based billing.
Best for: SEO teams wanting to evaluate AI rank tracking with familiar UX before paying.
Pros
- Try Pro for Free option (Rankscale pricing page, May 2026)
- 8+ engines tracked at Pro tier
- Familiar rank-tracker UX
- Credit-based billing with rollover
Cons
- Trial-based, not a permanent free tier
- Essentials starts at $20/mo if you upgrade
9. Frase 5-Day Trial
Frase free 5-day trial. Content brief generator plus AI Visibility tracking on 2-8 platforms by tier.
Best for: Solo SEOs wanting to evaluate brief generation plus AI Visibility before paying.
Pros
- 5-day trial without commitment
- Best-in-class brief generator
- AI Visibility scales 2-8 platforms (Frase pricing page, May 2026)
Cons
- Trial only — Starter is $49/mo monthly
10. Surfer SEO 7-Day Trial
Surfer SEO 7-day free trial. Content optimization editor with AI Search Visibility module covering 4 engines.
Best for: Content teams wanting to evaluate Surfer's AI Search Visibility module before paying.
Pros
- 7-day free trial
- AI Search Visibility module covers 4 engines
- Familiar NLP-grading UX
- Discovery plan $49/mo monthly (Surfer SEO pricing page, May 2026)
Cons
- Trial only — Discovery is $49/mo afterwards
11. Peec AI Demo
Peec AI demo path. Brand visibility analytics with sentiment and 7 engines tracked.
Best for: Brand marketing teams wanting to evaluate Peec AI's polished dashboard before committing.
Pros
- Demo evaluation path
- 7 engines tracked including Grok and Copilot
- Sentiment analysis on higher tiers
- Named brand customers (Hugo Boss, ElevenLabs, TUI Group, WIX)
Cons
- No free tier — entry is $95/mo Starter (Peec AI pricing page, May 2026)
12. Scrunch AI 7-Day Trial
Scrunch AI 7-day free trial of the Starter plan. Audit-style AI search diagnostics across 6 engines.
Best for: Mid-market brands wanting to evaluate audit-first diagnostics before committing to the $250/mo Starter.
Pros
- 7-day free trial (no credit card)
- 6 engines tracked
- Real-time AI bot crawl monitoring
- Citation source mapping
Cons
- Starter $250/mo annual after trial — highest entry on this list
Side-by-side comparison
The features that matter most when picking from this category.
| Tool | Type of free | What it tracks | What it does NOT include |
|---|---|---|---|
| RankAI Free Audit | Free, no card | Citation baseline + opportunity map | Execution (paid plan) |
| AI Search Visibility Checker | Free standalone | Brand presence across AI engines | Historical monitoring |
| AI Citation Tracker | Free standalone | Per-prompt citation evidence | Continuous tracking |
| GEO Score Calculator | Free standalone | GEO readiness score | Audit detail |
| Brand Mention Monitor (AI) | Free standalone | AI engine brand mentions | Sentiment / historical |
| AirOps Insights | Permanent free tier | 5 AI engines + 1 brand kit + 5 KB sources | Workflow builder ROI without engineering |
| Otterly Trial | 14-day trial | 4 engines + GEO audits | Permanent free tier (paid from $25/mo annual) |
| Rankscale Try Pro for Free | Try Pro for Free path | 8+ engines (Pro tier features) | Permanent free tier |
| Frase 5-Day Trial | 5-day trial | Briefs + 2-8 platforms | Permanent free tier |
| Surfer SEO 7-Day Trial | 7-day trial | Content editor + 4 engines | Permanent free tier |
| Peec AI Demo | Demo only | Sales-led evaluation | Hands-on free tier |
| Scrunch AI 7-Day Trial | 7-day trial | 6 engines + bot crawl | Permanent free tier |
What counts as a free AI SEO tool?
We split "free" into three categories. Each is useful for different evaluation modes.
- Permanent free tier. Stays free indefinitely with reduced feature scope. AirOps Insights is the most generous on this list (1 user, 1 brand kit, 5 knowledge base sources, 30+ AI models per AirOps pricing page, May 2026).
- Free standalone tools. No signup or subscription required. RankAI's AI Search Visibility Checker, AI Citation Tracker, GEO Score Calculator, and Brand Mention Monitor (AI) are free standalone tools you can use without an account.
- Free trials and audits. Time-limited free access to evaluate the full paid product. The RankAI free site audit is the most comprehensive evaluation entry on this list — no credit card required to baseline your opportunity.
How to use free tools to baseline before paying
A practical sequence for evaluating AI SEO tools at zero cost before committing to a paid plan:
- Step 1: Baseline with RankAI free audit. Get the opportunity map, citation share by engine, and recommended structural fixes. No card required (RankAI product profile, May 2026).
- Step 2: Spot-check with free standalone tools. Use AI Search Visibility Checker and AI Citation Tracker for per-prompt evidence on your highest-priority queries.
- Step 3: Try a permanent free tier for ongoing monitoring. AirOps Insights covers light monitoring needs without a subscription. Sufficient for spot-checks under 20 prompts.
- Step 4: Run paid trials for tools you're seriously considering. Otterly 14-day trial, Frase 5-day, Surfer 7-day, Scrunch 7-day, and Rankscale Try Pro for Free all let you evaluate the full product before committing.
- Step 5: Commit to the right paid plan. Once you have a baseline and a tool fit, commit. RankAI Starter at $49/mo is the lowest entry for execution (RankAI pricing page, May 2026); monitoring-only tools start at $20/mo (Rankscale) or $25/mo annual (Otterly).
How we ranked these tools
We compared all 12 tools across three weighted criteria (RankAI competitor research, May 2026):
- Genuinely free — no credit card, no automatic conversion to paid. RankAI free audit, the 4 RankAI standalone tools, and AirOps Insights all clear this bar. Trials are flagged as trials.
- Useful work covered — does the free tool produce a meaningful output (opportunity map, baseline, recommendation)?
- Clarity on what it does NOT include — every free tool has limits. We flag them explicitly so you know what to upgrade to.
Why RankAI ranks first. The free audit is the most comprehensive free entry on this list. It produces an opportunity map plus structural fix list comparable to paid audits. Combined with the 4 free standalone tools, you can run meaningful evaluation work at zero cost before deciding on a paid commitment.