8 AEO tools for AI misinformation detection, compared (2026)
Four AEO tools say on their own sites that they check AI answers for false claims about your brand: Profound (FactCheck, on Enterprise), Peec AI, Brandlight and AthenaHQ. None of them is real-time in practice: they ask the engines on a schedule, the fastest schedule any of them publishes is daily, and Brandlight runs weekly. For a mid-market budget, Peec AI ($95 entry) and AthenaHQ (free tier, $295 Starter) are the two with published prices.
AI misinformation about a brand is rarely dramatic. It is a price from two years ago, a product you discontinued, a market you do not serve, a founder who left, or a competitor's feature attributed to you. Each one costs a deal quietly, because the buyer never tells you what ChatGPT said.
Detecting it takes two things most visibility dashboards do not do: a list of facts that are true about you, and a check of every answer against that list. This page sorts eight tools by whether they do that check, how often they look, and what they cost. Vendor facts come from each vendor's own pages, read on 9 November 2026. We build Stellarcast, one of the eight, so weigh our entry accordingly.
The tools, compared
| Tool | Checks answers against your facts? | How often prompts run | Alerts | Entry price |
|---|---|---|---|---|
| Profound | Yes: FactCheck, against a knowledge base you own (Enterprise) | Not stated | Not stated | Custom |
| Peec AI | Yes: compares each claim with the facts you set | Every 24 hours, every model | Not stated on pages read | $95/mo Starter |
| Brandlight | Yes: against your approved claims, with a severity per error | Weekly | Not stated | Demo, no public price |
| AthenaHQ | Hallucination detection; discrepancy detection and claim review on Enterprise | Not stated | "Real-time brand mention alerts" | Free tier; $295/mo Starter |
| Semrush AI Visibility Toolkit | No named check; sentiment, and "portrayed accurately" as a goal | Daily updates | Scheduled email reports | From $139/mo |
| Ahrefs Brand Radar | Not in Brand Radar; an "AI Fact Checker" skill via a separate add-on | Daily | Via the same add-on | $129/mo Lite |
| Otterly.AI | No; sentiment and brand profiling (attributes, objections) | Not stated | When brand mentions change | $29/mo |
| Stellarcast (ours) | Keeps the full answer text from every engine, daily, for you to read | Daily, six engines, every market | Visibility drops, by email and Slack | $39/mo |
Feature, cadence and alert columns from each vendor's own pages, read 9 November 2026. Entry prices from our AI visibility tool pricing table, checked 26 September and 17 October 2026. "Not stated" means ask the vendor.
Is real-time AI misinformation detection possible?
Not in the sense the phrase suggests. No tool watches ChatGPT's conversations with your buyers; every tool here asks the engines a set of questions on a schedule and reads the answers. The fastest schedule on the market is daily, so "real-time" in practice means within a day of the answer changing.
Daily is also roughly the right speed, for a reason that matters more than speed: AI answers vary from run to run. A wrong claim that appears once may not appear again, and an alert on a single reading is mostly noise. What you want is a claim that repeats across days or engines, flagged once, with the answer text attached so someone can judge it. Our guide to AI visibility alerts without false positives explains the design that gets you there.
Best picks for mid-market teams
- You want an automated fact check at a published price: Peec AI. It compares each claim against facts you set and re-runs every prompt daily. Confirm which plan includes the fact check before you buy.
- You want to try before procurement: AthenaHQ, which has a free tier and lists hallucination detection; its claim review sits on Enterprise.
- You are an enterprise: Profound's FactCheck or Brandlight's approved-claims check, both sold through sales.
- You want to read every answer daily, cheaply, and judge it yourself: Stellarcast from $39 a month, across six engines and each market in its own language.
Stellarcast runs every tracked prompt on Google AI Overviews, ChatGPT, Gemini, Perplexity, Google AI Mode and Microsoft Copilot daily, keeps the full answer and the domains each engine cited, and alerts you by email or Slack when your visibility drops. It also checks every answer that names your brand against the facts you have confirmed (founding year, website and category) and alerts you when an answer contradicts them. When an answer is wrong, it shows you which sources the engine leaned on, which is where the fix starts.
See what AI engines say about you right now: get a free AI visibility audit.
How to catch and fix AI misinformation, step by step
- Write your brand facts down. Prices, plans, products, markets served, founding year, leadership, integrations. A fact check is only as good as the list it checks against.
- Ask the questions that expose them. "How much does [brand] cost?", "Does [brand] work in Germany?", "What does [brand] integrate with?" Generic category prompts rarely surface factual errors.
- Run them daily on every engine you care about. A claim that repeats across three days or two engines is real; one reading is not.
- Find the source. Engines repeat what they read. Look at the pages each engine cited: an old pricing page, a review site, a directory listing, a forum thread.
- Fix the source, then your own page. Update or remove the stale page, correct third-party listings, and state the fact plainly and early on your own site, ideally in a sentence an engine can quote. See how AI engines pick sources and writing content AI cites.
- Re-measure. Keep the prompt running until the wrong claim stops appearing across engines, and keep it running after.
Sentiment is a different measurement from accuracy: an answer can be warm and wrong. Our glossary entry on AI brand sentiment covers the difference.
See what AI says about you today
The free audit asks Google AI Overviews, ChatGPT, Gemini and Perplexity the questions buyers in your market ask, and shows where a competitor is named instead of you. No card, no commitment.
Get your free visibility auditFrequently asked questions
Which AEO tools detect AI misinformation about a brand?
On their own sites, read 9 November 2026: Profound (FactCheck, on Enterprise), Peec AI (compares claims with facts you set), Brandlight (checks answers against approved claims) and AthenaHQ (hallucination detection, with claim review on Enterprise). Semrush, Ahrefs Brand Radar and Otterly.AI track sentiment rather than checking facts.
Can any tool detect AI misinformation in real time?
Not in practice. Every tool asks the engines a set of questions on a schedule and reads the answers. The fastest schedule any vendor publishes is daily, so a new false claim surfaces within about a day; Brandlight runs weekly.
What is the best AI misinformation detection tool for a mid-market company?
Peec AI and AthenaHQ are the two with published prices. Peec AI starts at $95 a month, compares claims with facts you set and re-runs every prompt daily; AthenaHQ has a free tier and a $295 Starter plan and lists hallucination detection. Confirm which plan includes the check before buying.
How does Stellarcast help with AI misinformation?
Stellarcast runs every tracked prompt on six engines daily, keeps the full answer text and the domains each engine cited, and alerts on visibility drops by email and Slack, so a team can read what each engine said and trace a wrong claim to its source. It also checks every answer that names your brand against the facts you have confirmed (founding year, website and category) and alerts you when an answer contradicts them.
How do you fix false information an AI engine says about your brand?
Find the pages the engine cited, update or remove the stale source, correct third-party listings, state the fact plainly on your own site in a quotable sentence, and keep checking the same prompt daily until the wrong claim stops appearing.