What is an AI visibility tool?

An AI visibility tool asks AI answer engines such as ChatGPT, Perplexity, Gemini and Google AI Overviews the questions your buyers ask, on a schedule, and records whether your brand is mentioned and whether your site is cited as a source. Because AI answers vary from run to run, the useful output is a trend across many samples, not a single rank.

What is the cheapest AI visibility tool?

Among the tools here, Terradium Starter and Otterly.AI Lite both cost $29 a month for 15 tracked prompts. Otterly runs them daily on 4 engines. Terradium runs them weekly on 3 engines and includes 30 AI-written articles a month.

How much does Profound cost?

Profound doesn't publish a price for its paid plan. Its pricing page lists a free 7-day trial (50 prompts run daily on ChatGPT, Gemini and Google AI Overviews) and a custom-priced Enterprise plan.

Should I track prompts daily or weekly?

Daily tracking gives you more samples, so trends settle faster and you catch short-lived changes. Weekly tracking costs less and is usually enough to see whether new content is starting to get cited, because AI answers change on the scale of weeks, not hours.

What does cost per 100 prompts mean?

It's the plan's monthly price divided by the number of prompts it tracks, times 100. It makes plans of different sizes comparable. Because a daily plan samples each prompt about seven times as often as a weekly one, we also show the cost per 100 sampled answers.

Do AI visibility tools improve my visibility?

Most of them only measure it. To improve visibility you need content that AI engines can find, read and quote, and a site their crawlers can access. Terradium pairs the tracking with an AI writer for that, and the free AI crawler checker shows whether crawlers can read your site.

Comparison

The best AI visibility tools in 2026

Last updated 10 October 2026Prices checked 10 October 2026

How we compared them

We read every price off each vendor's own pricing page on the date at the top of this page, and every price in the table links to that page. We compare entry plans billed monthly, because that's what most teams start on. Where a vendor doesn't publish a number, the table says so instead of guessing.

Tool	Entry plan	Prompts	Runs	Engines	Free trial
TerradiumSmall teams that want tracking and the articles that fix the gaps	$29/moStarter. Includes 30 AI-written articles a month	15	Weekly	3 of 4ChatGPT, Perplexity, Google AI Overviews, Gemini	7 days
Otterly.AISolo marketers, SMBs and agencies	$29/moLite. AI Mode and Gemini $9/mo each, Claude $29/mo as add-ons	15	Daily	4 of 7ChatGPT, Google AI Overviews, Perplexity, Microsoft Copilot, Google AI Mode, Gemini, Claude	Yes
Peec AISEO and content teams	$95/moStarter. $80/mo billed annually; extra model $35/mo	50	Daily	3 of 6ChatGPT, Google AI Overviews, Google AI Mode, Gemini, Microsoft Copilot, Naver AI	Yes (length not stated)
SemrushTeams already on Semrush for SEO	$99/moAI Visibility Toolkit. +50 prompts for $60/mo; SEO + AI Search bundles from $199/mo	25	Daily	2 of 2ChatGPT, Google AI Mode	None
RankscaleBusinesses and agencies that want to set their own cadence	$99/moPro. 1,200 credits; cadence per prompt, hourly to monthly	Not published	Not published	9ChatGPT, Perplexity, Google AI Overviews, Google AI Mode, Gemini, Claude, Microsoft Copilot, DeepSeek, Mistral	7 days (Pro)
Ahrefs Brand RadarMarket research across Ahrefs' 470M+ prompt index	$199/moBrand Radar AI. From $199/mo; your own prompts billed per check from $50/mo	Not published	Daily	7Google AI Overviews, Google AI Mode, Perplexity, Microsoft Copilot, Gemini, ChatGPT, Claude	None
ScrunchBrands benchmarking before an enterprise rollout	$250/moCore. 5 seats, 1 brand; 9 engines on Enterprise	125	Not published	4 of 4ChatGPT, Perplexity, Google AI Overviews, Microsoft Copilot	7 days
AthenaHQSMBs that want many engines, billed per answer	$295/moStarter. 3,600 credits a month (1 credit = 1 AI answer)	Not published	Not published	11ChatGPT, Perplexity, Google AI Overviews, Google AI Mode, Gemini, Claude, Microsoft Copilot, Grok, DeepSeek, Meta AI, Mistral	Free plan (300 credits)
ProfoundEnterprises running AI search at scale	Contact salesEnterprise. Custom pricing; up to 9 answer engines	Not published	Daily	9ChatGPT, Perplexity, Google AI Overviews, Google AI Mode, Gemini, Microsoft Copilot, Claude, DeepSeek, Exa Search	7 days (50 prompts, daily)

Cost per 100 prompts

Prompt counts alone hide the biggest difference between plans: how often each prompt is run, and on how many engines. A daily plan samples about seven times as many answers as a weekly one for the same prompt count.

Tool (entry plan)	Price per month	Per 100 prompts	Answers sampled per month	Per 100 answers
Terradium (Starter)	$29	$193	196	$14.81
Otterly.AI (Lite)	$29	$193	1,824	$1.59
Peec AI (Starter)	$95	$190	4,500	$2.11
Semrush (AI Visibility Toolkit)	$99	$396	1,520	$6.51
Rankscale (Pro)	$99	Not published	4,800	$2.06
Ahrefs Brand Radar (Brand Radar AI)	$199	Not published	Not published	Not published
Scrunch (Core)	$250	$200	5,000	$5.00
AthenaHQ (Starter)	$295	Not published	3,600	$8.19
Profound (Enterprise)	Not published	Not published	Not published	Not published

Per 100 prompts = monthly price ÷ prompts × 100. Answers sampled = prompts × runs per month (daily 30.4, weekly 4.35) × engines included. Per 100 answers = monthly price ÷ answers × 100. Entry plans, billed monthly, as listed on each vendor's pricing page.

Who should pick which tool

Pick Profound if…

You're an enterprise team that wants the widest engine coverage (up to 9 engines), agent analytics and built-in AI marketing agents, and you're happy to go through sales for a custom price.

Pick Peec AI if…

You want daily tracking with clean source and citation analytics, unlimited seats, and a self-serve price. 50 prompts across 3 engines of your choice is a solid starting size for one brand.

Pick Otterly.AI if…

You want the cheapest daily tracking. The $29 Lite plan covers 4 engines but caps you at 15 prompts with no way to add more, so plan to move up to Standard ($189) once you outgrow it.

Pick Semrush if…

Your team already lives in Semrush. The AI Visibility Toolkit adds daily prompt tracking for ChatGPT and Google AI Mode next to your SEO data, and the SEO + AI Search bundles include more prompts.

Pick Ahrefs Brand Radar if…

You want to research a market rather than track a short list of questions. Brand Radar's index of over 470 million prompts shows how any brand appears across AI answers, and you can add your own prompts on top.

Pick Rankscale if…

You want to set the cadence prompt by prompt, from hourly to monthly, and pay per answer with credits.

Pick Scrunch if…

You're benchmarking AI visibility before an enterprise rollout and want site audits and AI bot traffic alongside the tracking.

Pick AthenaHQ if…

You want the widest engine list on a self-serve plan (11 engines on Starter) and are comfortable budgeting in credits, where one credit is one AI answer.

Pick Terradium if…

You're a small team that wants to know where you're missing from AI answers and to close the gap without hiring a writer. Each week Terradium samples your questions on 3 of ChatGPT, Perplexity, Google AI Overviews and Gemini, lists what to write next, and writes it: 30 articles a month, published to a built-in CMS or your own site.

What to check before you buy

Can AI crawlers read your site at all? If your robots.txt blocks them or your pages are client-rendered, no tracker will show you being cited. Run the free AI crawler checker first.
Cadence and engines, not just prompts. Compare answers sampled per month, as in the table above.
Which engines matter to your buyers. Ask a few customers which assistants they use, and check that every tool on your shortlist covers them on the plan you'd buy, not as a paid add-on.
Whether you need to act on the data. Most trackers stop at measurement. Decide who will write the content that closes the gaps.

Questions

What is an AI visibility tool?: An AI visibility tool asks AI answer engines such as ChatGPT, Perplexity, Gemini and Google AI Overviews the questions your buyers ask, on a schedule, and records whether your brand is mentioned and whether your site is cited as a source. Because AI answers vary from run to run, the useful output is a trend across many samples, not a single rank.
What is the cheapest AI visibility tool?: Among the tools here, Terradium Starter and Otterly.AI Lite both cost $29 a month for 15 tracked prompts. Otterly runs them daily on 4 engines. Terradium runs them weekly on 3 engines and includes 30 AI-written articles a month.
How much does Profound cost?: Profound doesn't publish a price for its paid plan. Its pricing page lists a free 7-day trial (50 prompts run daily on ChatGPT, Gemini and Google AI Overviews) and a custom-priced Enterprise plan.
Should I track prompts daily or weekly?: Daily tracking gives you more samples, so trends settle faster and you catch short-lived changes. Weekly tracking costs less and is usually enough to see whether new content is starting to get cited, because AI answers change on the scale of weeks, not hours.
What does cost per 100 prompts mean?: It's the plan's monthly price divided by the number of prompts it tracks, times 100. It makes plans of different sizes comparable. Because a daily plan samples each prompt about seven times as often as a weekly one, we also show the cost per 100 sampled answers.
Do AI visibility tools improve my visibility?: Most of them only measure it. To improve visibility you need content that AI engines can find, read and quote, and a site their crawlers can access. Terradium pairs the tracking with an AI writer for that, and the free AI crawler checker shows whether crawlers can read your site.

See where AI answers leave you out

Terradium samples ChatGPT, Perplexity, Google AI Overviews and Gemini for the questions your buyers ask, then writes the articles that close the gaps. $29 a month, 7 days free.

Start free for 7 days