Best Free AI Search Visibility Tools in 2026

Wynter's 2026 B2B CMO survey reported 84% of B2B chief marketers now use AI assistants and large language models for vendor-discovery research before booking a sales call. Gartner projects search engine volume will drop 25% by 2026 as AI chatbots absorb the top of the funnel. 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 converts to paid unless cancelled. A 14-day Otterly trial is not the same product surface as Google Search Console's permanent free reporting, and treating them interchangeably leads buyers to budget against tools that lapse mid-quarter. This guide labels every entry with one of the three categories.

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 unauthenticated AEO scans, a persistent 200-token monthly AI Visibility allotment across all five major engines, 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 with no signup beyond a contact form. 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.

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, not the 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.

1. Foglift — Freemium (combined free stack)

Foglift sits at #1 because the free surface combines four distinct product layers in one $0 stack: unlimited unauthenticated AEO scans on any URL (no signup), a free Foglift account with 200 monthly tokens for AI Visibility prompts across all five major engines, a brand and one team member, 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 unauthenticated scan produces an eight-dimension AEO 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 AI Visibility tracking — at 17 tokens per five-engine prompt (Gemini 1, ChatGPT 3, Google AI Overview 3, Claude 5, Perplexity 5), 200 tokens covers roughly 11 full five-engine checks per month. That is enough to baseline a brand, compare against one competitor, and re-test after a content edit, all without a credit card.

Key specs (free tier)

• Unauthenticated AEO scan: unlimited, no signup, any URL — eight-dimension score with action plan
• Free account allotment: 200 tokens/month, 1 brand, 1 team member, manual scans
• AI engines covered (free): ChatGPT, Perplexity, Claude, Gemini, Google AI Overview
• 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, April 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

2. HubSpot AEO Grader — Truly free (signup 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. The one friction point is a signup form (company name, location, industry, products and services) before the full report displays. 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: signup form before full results — company name, location, industry, products
• 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 is sales-led with no public starting price; 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 GEO platform, the free report is a no-friction way to see the analyzer output before booking a demo. For a smaller team that wants ongoing monitoring rather than a one-shot read, this is not the right shape — it is structurally a sales lead-magnet, well-built but bounded.

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
• 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 GEO 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 — so 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, not bundled into Ahrefs Webmaster Tools or any core Ahrefs plan. 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-issue side of an AEO 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 side of an AEO 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 GEO 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 AEO 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 in April 2026.

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

The cleanest way to compare free GEO 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 AEO score with no API key. Run it before signing up for any of the signup-gated free reports, so you walk into 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 AEO 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, go sign up for 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 signup-gated 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 AI Visibility tracking on its own (that lives in the hosted Foglift account). It is a no-friction baseline that lets you sanity-check the signup-gated 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 — Otterly's own /pricing FAQ in April 2026 describes the entry surface as a "free trial for new users," which is a time-limited evaluation, not a permanent free tier. Otterly is a strong paid tool starting at $29/month Lite; we just 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, not a permanent free tier.
• Similarweb — 7-day evaluation trial, not 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

What is the difference between truly free, freemium, and free trial?

Truly free means the tool delivers a usable result with no time limit, no credit card, and (often) no signup, financed by an adjacent paid product line — Google Search Console, Bing Webmaster Tools, Ahrefs Webmaster Tools all sit here. Freemium means a permanent free tier with hard usage caps gated to encourage upgrade — Foglift's 200-token free account, Knowatoa's free audit, Geoptie's standalone tools. Free trial means a time-limited evaluation window that converts to paid unless cancelled — Otterly, ZipTie, Morningscore, Similarweb. The three are routinely conflated; treating them interchangeably leads buyers to budget against tools that lapse mid-quarter.

Which free AI search visibility tools work without any signup?

Foglift's unauthenticated AEO scan is the only tool in this list that returns a full eight-dimension AEO score with no signup, no credit card, and no email — paste any URL into foglift.io/scan or run npx foglift-scan from the open-source CLI. Google Search Console, Bing Webmaster Tools, and Ahrefs Webmaster Tools are free for verified site owners, which requires authentication. HubSpot AEO Grader, Profound AEO Report, and Knowatoa all require contact-information capture before showing results.

Is HubSpot AEO Grader free?

Yes. HubSpot's AEO Grader at hubspot.com/aeo-grader is completely free. It does require a signup form (company name, location, industry, products and services) before the full report displays. Engine coverage is ChatGPT, Perplexity, and Gemini; it does not analyze Claude. It is a one-shot snapshot, not continuous monitoring.

Can I track AI Overview impressions with Google Search Console?

Yes, partially. GSC reports AI Overview appearances inside the regular Performance report — AI Overview impressions and clicks are merged into the same totals as classic search results. Site owners must verify ownership to access the data. The trade-off versus a dedicated GEO platform is that GSC tells you when your page appears in an AI Overview but says nothing about ChatGPT, Perplexity, Claude, or Gemini citations. For those engines a dedicated AI Visibility tool is required.

What is Foglift's free tier, and what fits inside 200 tokens per month?

The Foglift free tier includes unlimited unauthenticated AEO scans on any URL (no signup), a free Foglift account with 200 monthly tokens for AI Visibility prompts, 1 tracked brand, 1 team member, and manual scans. At 17 tokens per five-engine prompt — Gemini 1, ChatGPT 3, Google AI Overview 3, Claude 5, Perplexity 5 — 200 tokens covers roughly 11 full five-engine AI Visibility checks per month. That is enough to baseline a brand, run a competitor comparison check, and re-test after a content edit. Scheduled scans, multi-brand workspaces, and larger token allotments start at the Launch tier ($49/month, 4,000 tokens).

Are there genuinely free GEO tools that cover all five major AI engines?

Foglift's free tier is the only entry in this list that covers all five engines (ChatGPT, Perplexity, Claude, Gemini, Google AI Overview) inside its free 200-token monthly allotment. HubSpot covers ChatGPT, Perplexity, and Gemini. Profound covers ChatGPT, Perplexity, and Google AI Overview. The platform-native free tools cover their own ecosystem only — GSC for Google AIO, BWT for Microsoft. For full five-engine free coverage in one place, Foglift is the only option as of April 2026.

Why are some popular AI search tools (SE Ranking, Mangools, Hall, Amsive) not in the main list?

Per our pre-publication fact-check rule, every tool included must have its free-tier specifics verified directly against the vendor's own page. The four tools above were flagged as free in adjacent listicles, but our fresh April 2026 fetches against each vendor either returned 404, returned content without specific free-tier limits, or could not load. We list them in the transparency sidebar above rather than risk asserting limits that turned out to be inaccurate.

Sources & data freshness

Pricing, free-tier limits, and engine coverage verified by direct WebFetch against each vendor's own page in April 2026. Free tiers in this category change more frequently than paid tiers; we re-verify quarterly. Last verified: 2026-04-29.

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. SE Ranking / Search Engine Journal — "Top Factors Influencing ChatGPT Citations" (2025, 129,000-domain analysis). ChatGPT cites only 15% of retrieved pages; top 10 domains take 46% of all citations on a topic — winner-take-most distribution.
3. Wynter — 2026 B2B CMO Survey. 84% of B2B chief marketers use AI assistants and large language models as part of their vendor-discovery research before booking a sales call.
4. Gartner — "Search Engine Volume Will Drop 25% by 2026, Due to AI Chatbots and Other Virtual Agents" (February 2024).
5. BrightEdge / xseek — Structured data and AI Overview analysis (2025). Sites with FAQ schema and strong structured data see up to 40% more AI Overview appearances.
6. Vendor pricing & product pages (verified 2026-04-29) — Foglift (foglift.io/pricing), HubSpot (hubspot.com/aeo-grader), Profound (tryprofound.com/aeo-report), 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.
7. Foglift free-tier specifics — verified in source at src/lib/pricing.ts::PLANS.free and TOKEN_COSTS: 200 tokens/month, 1 brand, 1 team member, no scheduled-scan options; per-engine token costs Gemini 1, ChatGPT 3, AI Overview 3, Claude 5, Perplexity 5 (sum 17 per five-engine prompt).

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