Best Free AI Search Visibility Tools in 2026

Wynter's January 2026 survey of 101 mid-market B2B SaaS CMOs reported that 84% use AI assistants and large language models for vendor discovery. Gartner predicted in 2024 that traditional search engine volume would drop 25% by 2026 as AI chatbots absorb some queries. The Aggarwal et al. KDD 2024 paper that introduced the GEO-Bench benchmark of 10,000 queries showed source-level optimization can lift visibility in generative engines by up to 40%. The buyer question that follows is straightforward: where do I start measuring my own AI search visibility before I budget for a paid platform?

Most listicles that claim to answer this question conflate three different product surfaces under the "free" label. Truly free means a tool delivers a usable result with no time limit and no credit card, financed by an adjacent paid product line. Freemium means a permanent free tier with hard caps, gated to encourage upgrade. Free trial means a time-limited evaluation window that expires or converts according to the vendor's terms. The current OtterlyAI trial lasts 7 days, includes 50 search prompts, requires no credit card, and ends automatically. That is a different product surface from Google Search Console's permanent free reporting. This guide labels every entry by the access buyers actually receive.

Foglift is on this list because we built one of the platforms in it. We've slotted ourselves at #1 because the free combined stack (unlimited Technical Audits, Google Search Console integration, AI crawler analytics, automated weekly Google AI Overview monitoring for one prompt per category, an MIT-licensed open-source CLI on npm, and a Model Context Protocol server on npm) is structurally distinct from anything else here. For a single one-shot brand snapshot in three engines and nothing more, HubSpot's AEO Grader (#2) is the simpler choice. HubSpot says no account is required. Users enter brand information, then complete a short form to unlock the full report. For site owners who want AI Overview and Microsoft Copilot data merged with their existing search analytics, the platform-native tools (Google Search Console, Bing Webmaster Tools, Ahrefs Webmaster Tools) cover that surface for free with site verification. The eight verified entries are below; the comparison table and runnable evaluation script will let you re-rank against your own priorities.

If you are past the free-tool evaluation stage, the broader AI search optimization tools buyer guide compares paid monitoring platforms, developer access, citation-source reporting, and pricing. The AI search monitoring tools guide narrows that list to recurring brand-mention tracking.

How we evaluated and categorized

Five criteria, weighted equally:

1. Honest categorization. Truly free, freemium, or one-shot snapshot. No time-limited trials masquerading as free. Vendors get one slot only and the label is the vendor's own /pricing or product-page wording where it exists. Vendor wording gets priority over listicle-industry interpretation.
2. AI engine coverage. Bonus weight for tools that cover the full five (ChatGPT, Perplexity, Claude, Gemini, Google AI Overview) inside the free surface. Single-ecosystem tools (GSC for Google, BWT for Microsoft) score on coverage of their own platform.
3. Friction to first result. Whether a buyer can get a usable score with no signup, with a signup form, with site verification, or with vendor-specific account creation. Lower friction scores higher.
4. Verifiability of the free claim. Tools whose free tier we could verify directly against the vendor's own pricing or product page in April 2026 are in the main list. Tools that adjacent listicles claimed had free tiers but where our fresh fetch failed are listed transparently in the unverifiable-claims sidebar rather than dropped silently.
5. Continuous vs one-shot. A free monthly snapshot is structurally different from a permanent monitoring layer. The comparison table calls this out per entry so a buyer treating this as an evaluation budget can pick the right shape.

What the free AI visibility checker queries are really asking

The phrase "free AI visibility checker" bundles three different jobs. Some searchers want an instant URL-level audit with no signup. Some want a brand snapshot across ChatGPT, Perplexity, and Gemini. Others want recurring monitoring without a paid plan. Treating those as one product category is why free-tool listicles get confusing.

1. Foglift: Freemium (combined free stack)

Foglift sits at #1 because the free surface combines four distinct product layers in one $0 stack: unlimited Technical Audits on any URL, a free Foglift account with Google Search Console integration, AI crawler analytics, automated weekly Google AI Overview monitoring for one prompt per category, one tracked brand and one user, and the open-source foglift-scan CLI on npm under the MIT license plus the foglift-mcp Model Context Protocol server on npm. The hosted Technical Audit produces an eight-dimension AI Readiness score (Structured Data Richness, Heading Clarity, FAQ Quality, Entity Identity, Content Depth, Citation Formatting, Topical Authority, AI Crawler Access) with prioritized fixes. The free Foglift account adds recurring Google AI Overview monitoring, so a single brand can move from a one-shot technical baseline to a weekly visibility signal without a credit card. Full five-engine monitoring starts on the paid Launch tier.

Key specs (free tier)

• Technical Audits: unlimited, any URL, eight-dimension AI Readiness score with action plan
• Free account: 1 brand, 1 user, Google Search Console integration, AI crawler analytics
• AI engines covered (free monitoring): weekly Google AI Overview for one prompt per category
• Open-source CLI on npm: foglift-scan, MIT license
• Open-source MCP server on npm: foglift-mcp for Cursor, Claude Code, Windsurf
• Paid tiers: Launch $49/mo (4,000 tokens), Growth $129/mo (11,500 tokens), Enterprise $299/mo (27,000 tokens). Verified at foglift.io/pricing, July 15, 2026
• Best for: developers and SaaS teams that want a real evaluation surface (one-shot scoring, ongoing AI Visibility monitoring, and CLI/MCP integration) without paying first

The July 15 Actions Engine pull shows buyers also compare Foglift against low-cost monitoring products in the same query family. For that use case, the first decision is the evaluation shape: no-signup technical checker, one-shot brand report, verified site-owner analytics, recurring single-engine monitoring, or five-engine AI Visibility monitoring. The product names matter only after that split.

2. HubSpot AEO Grader: Truly free (no account required)

HubSpot AEO Grader is the simplest free option for a single brand snapshot. The grader produces a composite score across sentiment, presence quality, brand recognition, share of voice, and market positioning, plus a written interpretation of what the results mean for your AI representation. There is no per-use cost. HubSpot says no account is required. Users enter brand information, then complete a short form to unlock the full report. The product is a one-shot analysis (HubSpot's own FAQ recommends re-running it monthly since AI models update) rather than continuous monitoring. The engine coverage is ChatGPT (GPT-5.2), Perplexity (Sonar), and Gemini 2.0 Flash; Claude is not analyzed. For an existing HubSpot customer this is also the cleanest read of AI-search-driven brand presence inside an ecosystem they already run their marketing in.

Key specs (free)

• Cost: free, no per-use charge
• Friction: HubSpot says no account is required. Users enter brand information, then complete a short form to unlock the full report.
• AI engines covered: ChatGPT, Perplexity, Gemini (no Claude, no Google AI Overview)
• Frequency: one-shot snapshot; HubSpot recommends monthly re-runs
• Best for: a single quick brand snapshot in three engines, especially for existing HubSpot customers

3. Profound AEO Report: Truly free (signup required)

Profound publishes a free AEO Report at tryprofound.com/aeo-report that delivers AI Visibility, Source Citations, Brand Sentiment, and Content AEO insights for a single brand. Engine coverage is ChatGPT, Perplexity, and Google AI Overview. The full Profound platform now has public self-serve pricing: Starter at $99/month billed yearly for ChatGPT tracking only, Growth at $399/month billed yearly for three answer engines, and custom Enterprise packaging for broader engine coverage, API access, SSO, and dedicated support. The free report is the no-cost evaluation surface that maps to the platform's analyzer outputs. For an enterprise marketing team considering Profound as a paid AI Visibility platform, the free report is a low-friction way to see the analyzer output before committing budget. For a smaller team that wants recurring monitoring at the lowest commitment level, check whether a permanent free tier or a $49/month five-engine plan fits better than a $99/month ChatGPT-only plan.

Key specs (free)

• Cost: free
• Friction: brand-information capture before the report displays
• AI engines covered: ChatGPT, Perplexity, Google AI Overview (no Claude, no Gemini)
• Frequency: one-shot
• Paid tiers: Starter $99/month billed yearly, Growth $399/month billed yearly, Enterprise custom. Verified at tryprofound.com/pricing, July 15, 2026
• Best for: enterprise marketing teams previewing the Profound analyzer before a sales conversation

4. Knowatoa: Freemium (free 60-second audit)

Knowatoa offers a free audit billed at roughly 60 seconds with no credit card, returning a one-shot visibility snapshot across multiple AI engines and surfacing content gaps where competitors are outranking the audited brand. The paid tiers (Starter $59/month, Growth $199/month) add weekly monitoring, dedicated support, and on the Growth tier 7-engine coverage with API access and automated content drafting. The vendor pricing page does not publish per-engine question quotas for the free tier; it is best treated as a single evaluation snapshot. For a lean team considering a paid AI visibility tool in the under-$200/month bracket, Knowatoa's free audit is a low-friction way to see the analyzer's output before paying.

Key specs (free)

• Cost: free; no credit card required for the audit
• Friction: contact-information capture before the audit runs
• AI engines covered: ChatGPT, Claude, Gemini, and adjacent engines per Knowatoa marketing copy
• Frequency: one-shot audit
• Paid tiers: Starter $59/month, Growth $199/month. Verified at knowatoa.com, April 2026
• Best for: teams previewing a paid AI visibility tool in the sub-$200 monthly bracket

5. Geoptie: Freemium (free standalone tools)

Geoptie publishes a set of free standalone tools that map to the components of a paid AI Visibility platform without bundling them into a paid subscription: a GEO Audit (comprehensive website analysis), a Rank Tracker, a Content Checker, a Keyword Finder, a Cannibalization Checker, and a Backlink Finder. The full monitoring platform (covering ChatGPT, Claude, Gemini, Perplexity, Copilot, and Grok with rank tracking, prompt research, and competitor analysis) is on three annually-billed paid tiers. The free standalone tools are useful for a one-time technical check or for spot work, but a buyer who needs continuous AI search visibility monitoring will need to graduate to one of the paid tiers. Geoptie's adjacent listicle coverage in April 2026 was inconsistent. Some sources flagged it as "free open beta," while the vendor's own pricing page surfaces the three paid tiers and a separate set of free standalone tools. We describe the free surface as we found it on geoptie.com directly.

Key specs (free)

• Cost: free for the standalone tools (Audit, Rank Tracker, Content Checker, Keyword Finder, Cannibalization Checker, Backlink Finder)
• Friction: vendor sign-up flow on tools that require a saved project
• AI engines covered (paid platform): ChatGPT, Claude, Gemini, Perplexity, Copilot, Grok
• Paid tiers (annual billing): Starter $490/yr (15 prompts, 2 brands), Professional $990/yr (100 prompts, 10 brands), Enterprise $1,990/yr (400 prompts, 50 brands). Verified at geoptie.com, April 2026
• Best for: spot-checking a single page or running standalone audits without committing to a monthly subscription

6. Ahrefs Webmaster Tools: Truly free (verified site owners)

Ahrefs Webmaster Tools is the free Ahrefs surface for verified site owners: Web Analytics for traffic and visitor data in real time, a Site Audit identifying 170+ technical and on-page SEO issues with prioritization, and a Site Explorer view of organic keywords and backlink profile. Free users can view up to 1,000 backlinks and keywords per query and get 5,000 monthly crawl credits per verified project, with unlimited verified websites per account. Brand Radar (Ahrefs' AI search visibility product covering ChatGPT, Perplexity, AI Overviews, AI Mode, Microsoft Copilot, Gemini, and Grok across tracked prompts) is sold as a separate paid subscription. Ahrefs Webmaster Tools and the core Ahrefs plans do not include it. Brand Radar pricing starts at $398/month (Select Platforms) or $699/month (All Platforms, with 2,500 prompt checks included). The honest framing: AWT covers the traditional SEO and crawl-diagnostics side of an AI search program for free but does not cover AI search visibility tracking. For that side of the program, pair AWT with one of the dedicated free AI visibility tools above.

Key specs (free)

• Cost: free for verified site owners; no credit card
• Friction: Ahrefs account creation plus site-ownership verification
• Coverage: Web Analytics, Site Audit (170+ issue checks), Site Explorer (organic keywords, backlinks)
• Limits: 1,000 backlinks/keywords per query, 5,000 monthly crawl credits per project, unlimited verified projects
• NOT included free: Brand Radar, AI search referral data. Sold as a separate standalone subscription, $398/month (Select Platforms) or $699/month (All Platforms)
• Best for: existing or aspiring Ahrefs users wanting the technical-SEO and crawl-diagnostics side of an AI search program at no cost

7. Google Search Console: Truly free (verified site owners)

Google Search Console is the platform-native truly-free option for AI Overview reporting. Site owners verify ownership of the property (DNS, HTML file, HTML tag, Google Analytics, or Google Tag Manager) and get the full Performance report including impressions, clicks, position, and click-through rate across all Google search surfaces: Web, Image, Video, News, Shopping, and AI Overviews. AI Overview impressions and clicks are merged into the regular Performance totals rather than reported on a separate dashboard, but the dimension filter and the URL Inspection tool both surface AIO appearances per page. The trade-off versus a dedicated AI search visibility platform: GSC tells you when your page appears in an AI Overview but says nothing about ChatGPT, Perplexity, Claude, or Gemini citations. For the Google AI Overview side of an AI search program, though, no paid tool reports the same data more reliably than the platform-native source.

Key specs (free)

• Cost: free, no token quota, no usage cap
• Friction: site-ownership verification (multiple methods supported)
• Coverage: Google Search and Google AI Overview impressions, clicks, position, CTR
• Reports: Performance, Index Coverage, URL Inspection, Sitemaps
• Limits: 16-month historical data window; one-day reporting lag
• Best for: every site owner serious about AI Overview visibility. This is the canonical Google source

8. Bing Webmaster Tools: Truly free (verified site owners)

Bing Webmaster Tools is the Microsoft-side companion to GSC, free for verified site owners, with site-ownership verification analogous to Google's. The platform reports Bing search traffic, crawl data, and a sitemap surface; site owners running content that targets the Microsoft ecosystem (Edge default search, Microsoft Copilot grounding) should have it verified. The specific shape of Bing's AI / Copilot performance reporting was not fully verifiable from the public help-center surface during our April 2026 fact-check pass, so we describe the free tier conservatively as "site analytics and crawl reporting" rather than asserting a specific Copilot citation dashboard. Like GSC, the value here is platform-native. Paid tools do not replicate the exact surface Microsoft owns.

Key specs (free)

• Cost: free
• Friction: site-ownership verification
• Coverage: Bing search analytics, crawl data, sitemap submission
• AI / Copilot reporting surface: not fully verifiable from the public help center as of April 2026; check current product page before relying on a specific Copilot dashboard
• Best for: site owners who want Microsoft-ecosystem visibility data alongside their Google data

Comparison table

Four columns: tool, who it's best for, the free surface (truly free / freemium / one-shot), and the paid starting price when one exists. All free-tier limits and paid pricing were verified by direct WebFetch against each vendor's own pricing or product page, with Foglift, Profound, and OtterlyAI pricing rechecked on July 15, 2026.

How to evaluate the free tier of every tool above without paying anything

The cleanest way to compare free AI search visibility tools is to run a baseline scan against your homepage with each one and compare the outputs. The script below uses the open-source foglift-scan CLI (MIT-licensed, on npm) to produce an eight-dimension AI Readiness score with no API key. Run it before completing any of the form-unlocked free reports, so you approach them with prior data and can sanity-check their output against an independent baseline.

#!/usr/bin/env bash
# evaluate-free-aeo-stack.sh
# Run this first, BEFORE signing up for any free AI search tool.
# Establishes a no-signup baseline you can sanity-check the others against.
# Usage: ./evaluate-free-aeo-stack.sh https://your-site.com

set -euo pipefail
URL="${1:?usage: evaluate-free-aeo-stack.sh https://your-site.com}"
OUT="$(mktemp -d)"

# 1. Baseline AI Readiness score on YOUR homepage, no API key, no signup.
npx -y foglift-scan "$URL" --json > "$OUT/aeo.json"

# 2. Print the eight-dimension breakdown sorted weakest first.
node -e '
  const r = require("'"$OUT"'/aeo.json");
  const d = r.aeo?.dimensions || {};
  Object.entries(d).sort((a,b)=>a[1]-b[1]).forEach(([k,v]) => console.log(k.padEnd(28), v));
'

# 3. Now run the same scan against two competitors so you have a benchmark.
for u in https://competitor-a.com https://competitor-b.com; do
  npx -y foglift-scan "$u" --json > "$OUT/$(echo "$u" | tr / _).json" || true
done

# 4. With this data in hand, run HubSpot AEO Grader, Profound AEO Report,
#    and Knowatoa. Verify each tool's output against the
#    eight-dimension baseline above. Tools that disagree wildly with the
#    baseline are worth a closer look. Either they're seeing something
#    foglift-scan isn't, or they're surfacing noise.

echo "Baseline + competitor data in: $OUT"
echo "Now run the form-unlocked free tools and compare against this baseline."

The point is not that foglift-scan replaces any of the other free tools. It does not have recurring AI Visibility monitoring on its own; that lives in the hosted Foglift account. It is a no-friction baseline that lets you sanity-check the form-unlocked reports. If HubSpot's AEO Grader and Profound's AEO Report converge on the same weak dimensions the CLI flagged, you have triangulated. If they disagree, either they are seeing engine-specific signals the CLI cannot or they are surfacing noise. Worth investigating either way.

Free trials masquerading as free (deliberate exclusions)

Several tools that appear in adjacent industry listicles labelled as "free" or "freemium" are in fact time-limited evaluation trials. We exclude them from the main list so the categorization stays honest:

• Otterly.ai: The current OtterlyAI trial lasts 7 days, includes 50 search prompts, requires no credit card, and ends automatically. Otterly changed the trial duration on June 30, 2026. That is a time-limited evaluation rather than a permanent free tier. Otterly is a strong paid tool starting at $29/month Lite; we do not classify it as free here.
• ZipTie: adjacent listicles describe ZipTie as having a free tier; the vendor's public surface during our April 2026 fetch flagged it as a 14-day trial.
• Morningscore: 14-day evaluation trial rather than a permanent free tier.
• Similarweb: 7-day evaluation trial rather than a permanent free tier.
• Semrush AI Search Visibility Checker: Semrush publishes a 7-day trial with no credit card and several permanent-free SEO tools (SEO Checker, Website Traffic Checker, Keyword Tool), but the AI Search Visibility surface itself was not separable from the paid Semrush platform during our April 2026 verification. If you are an existing Semrush customer the AI Visibility module is included; if you are not, treat the surface as a trial rather than a free tier.

Tools we tried to verify but could not (transparency)

Per our pre-publication rule, every tool included in the main list has its free-tier specifics verified directly against the vendor's own pricing or product page. Several tools that adjacent listicles flagged as free were not verifiable from their own surface during our April 2026 pass. We list them transparently rather than risk asserting limits that turn out to be inaccurate:

• SE Ranking AI Search Visibility Tool: adjacent listicles claim a free daily-check tier; our fresh fetches against seranking.com's AI Search Visibility URLs returned 404. The product appears to exist (it is referenced from the main SE Ranking site) but the standalone landing page was not reachable. Recommend checking seranking.com directly for the current free-tier shape before relying on it.
• Mangools AI Search Watcher: Mangools' own product page describes a "Start in 30 seconds. No credit card required" signup, but the pricing page during our fetch did not surface specific free-tier brand-prompt limits or tracking-frequency caps. The free tier almost certainly exists; its quotas are not publicly documented in a way we could verify.
• Hall: the vendor URL did not resolve consistently during our April 2026 fact-check. Adjacent listicles describe a Lite plan at 25 questions/month; we cannot confirm against the vendor's own page.
• Amsive AI Visibility Grader: vendor URL returned 404 during our fetch. Adjacent listicles flag it as a free diagnostic checklist; cannot confirm.

We will refresh this section quarterly. If you are evaluating one of these tools, the safest path is to visit the vendor's pricing page directly and verify the current free-tier shape before budgeting around it.

FAQ

Sources & data freshness

Pricing, free-tier limits, and engine coverage were checked against each vendor's own page, with HubSpot's access flow and OtterlyAI's trial terms rechecked on July 15, 2026. Free tiers in this category change more frequently than paid tiers; we re-verify quarterly. Search Console query data refreshed on 2026-06-23, and Actions Engine evidence refreshed from the production recommendations payload generated on 2026-07-15T07:32:20.492Z.

1. Aggarwal, Murahari, Rajpurohit, Kalyan, Narasimhan, Deshpande: "GEO: Generative Engine Optimization" (KDD 2024, arXiv:2311.09735). Introduces GEO-Bench (10,000 queries) and shows source-level optimization lifts generative-engine citation visibility by up to 40%.
2. Wynter, 2026 B2B CMO Survey. The January 2026 survey of 101 mid-market B2B SaaS CMOs found that 84% use AI assistants and large language models for vendor discovery.
3. Gartner: "Search Engine Volume Will Drop 25% by 2026, Due to AI Chatbots and Other Virtual Agents" (February 2024 prediction).
4. Vendor pricing & product pages: Foglift (foglift.io/pricing), Profound (tryprofound.com/pricing, rechecked July 15, 2026), OtterlyAI (current free-trial terms, updated June 30, 2026), HubSpot (AEO Grader access and report flow), Knowatoa (knowatoa.com), Geoptie (geoptie.com), Ahrefs Webmaster Tools (ahrefs.com/webmaster-tools), Google Search Console (search.google.com/search-console/about), Bing Webmaster Tools (bing.com/webmasters/about). Pricing subject to change; verify against the vendor's own page before relying on the data.
5. Foglift free-tier specifics: rechecked 2026-07-15 from the current product context: unlimited Technical Audits, one free tracked brand, one user, Google Search Console integration, AI crawler analytics, and weekly Google AI Overview monitoring for one prompt per category. Paid plans add all five tracked engines and higher monitoring cadence.
6. Foglift Google Search Console property, exact URL query data for /blog/free-ai-search-visibility-tools: March 25 to June 23, 2026. Rows used in this refresh include ai visibility checker free, ai visibility checker free online, ai ranking/visibility checker / free, and ai search monitoring free trial.
7. Foglift Actions Engine recommendation payload: production /api/recommendations cache generated 2026-07-15T07:32:20.492Z for foglift.io. The query cheapest AI brand visibility tracking tool had 0 of 5 engine mentions, 0% top-three win rate, 0% share of voice, and 83% competitor pressure across 46 runs. tryprofound.com was the strongest prompt-level competitor signal at 544 mentions.
8. Foglift CLI visibility history and sentiment: run July 15, 2026 at 9:00 a.m. PDT. The visible 30-day ChatGPT history returned 50 rows with brand_mentioned=no. Sentiment covered 646 analyzed responses, with tryprofound.com at 1,261 tracked competitor mentions, otterly.ai at 1,094, peec.ai at 990, semrush.com at 856, and ahrefs.com at 632.

Fundamentals: Learn about GEO (Generative Engine Optimization) and AEO (Answer Engine Optimization) (the two frameworks for optimizing your content for AI search engines).