Otterly vs Lumentir: Which AI Visibility Tool Should You Use?
Both Otterly and Lumentir track how your brand appears in AI-generated answers. That's where the similarity ends. Otterly is the most popular entry point in the category: affordable, well-reviewed, and easy to start with. Lumentir is built around a different premise, that knowing you're mentioned in an AI answer is only useful if you can also see whether that mention drives actual traffic and revenue.
This comparison breaks down exactly what each tool does, where each one falls short, and which is the right fit for your situation.
What Each Tool Does
Otterly
Otterly monitors brand mentions across ChatGPT, Perplexity, Google AI Overviews, Bing Copilot, and Gemini (Claude is not covered). It runs automated queries from a prompt library, records which brands appear and how often, and produces share-of-voice comparisons against competitors. The GEO Audit checks 25+ on-page factors for AI readiness.
Otterly is widely recognized in the category: Gartner Cool Vendor 2025, G2 High Performer, 4.9/5 across 250+ reviews, and over 20,000 users. At $29/month for the Lite plan, it's the cheapest way to start tracking AI visibility. The Standard plan at $189/month (100 prompts) is more realistic for actual business use.
Lumentir
Lumentir tracks AI mentions across ChatGPT, Perplexity, Grok, Gemini, AI Overviews, and Copilot (six platforms, matching Otterly's breadth and adding Grok). Where Lumentir goes further is in what it does with that mention data.
The AI Traffic Insights module connects your GA4 data to visibility changes, so you can see when an improvement in your ChatGPT mention rate corresponds to a change in chatgpt.com referrals and downstream conversions. The Crawler Analytics module monitors AI bot activity (GPTBot, OAI-SearchBot, PerplexityBot, ClaudeBot) in your server logs and calculates the AI Click-Through Ratio per platform. The Answer Insights module provides page-level recommendations on what to fix in your content and which external pages are being cited instead of yours.
Feature Comparison
| Feature | Otterly | Lumentir |
|---|---|---|
| Starting price | $29/mo (15 prompts) | €55/mo (1 website, 100 prompts, 3,000 responses) |
| Practical entry price | $189/mo (100 prompts) | €55/mo (same prompt volume, lower price) |
| ChatGPT tracking | Yes | Yes |
| Perplexity tracking | Yes | Yes |
| Claude tracking | No | No |
| Grok tracking | No | Yes |
| Gemini tracking | Yes | Yes |
| GA4 traffic attribution | No | Yes (native) |
| Server log / crawler analytics | No | Yes (AI CTR metric) |
| Cited page analysis | Domain-level only | Page-level (own + competitor) |
| Actionable content steps | GEO Audit (25+ factors) | Per-page recommendations |
| Competitor share of voice | Yes | Yes |
| Citation accuracy monitoring | Partial | Yes |
| Answer Gap analysis | No | Yes |
| Multi-country tracking | Yes (50+ countries) | Yes |
The Core Difference: Monitoring vs. Attribution
Otterly is a monitoring tool. It answers: "Is my brand appearing in AI answers?" That's a legitimate and useful question. The problem is that the answer tells you nothing about whether those appearances are generating business results. You can have a 45% mention rate in ChatGPT and zero attributable revenue from it if the mentions are in training-data responses that don't link anywhere.
Lumentir is built to answer a second question alongside the first: "Are those mentions actually driving traffic and conversions?" The GA4 integration, crawler analytics, and AI Click-Through Ratio exist specifically to bridge that gap. If your OAI-SearchBot crawl count is high but your chatgpt.com referrals are low, Lumentir surfaces that discrepancy and flags it as a content structure problem worth fixing.
"Otterly can tell you that your brand is mentioned in ChatGPT, but it cannot tell you whether that mention drove someone to your website. That's the attribution gap most marketing teams need to close."
Where Otterly Wins
Otterly has the strongest community validation in the category. G2 High Performer status, Gartner Cool Vendor 2025, and 4.9/5 across 250+ reviews are real signals. The GEO Audit feature (checking 25+ on-page factors for AI readiness) is a useful standalone tool that Lumentir's entry plan doesn't replicate at the same level of on-page factor depth.
"Otterly's GEO Audit checks over 25 on-page factors against AI readiness criteria. It's one of the more thorough content checklists in the category for teams that want a structured audit process."
If you manage multiple international brands, Otterly's 50+ country tracking at the Lite price point is genuinely useful. And at $29/month for a quick temperature-check on whether you're appearing in AI at all, it's the lowest-friction way to start in the category.
Where Lumentir Wins
Lumentir wins on three fronts: traffic attribution, server-side data, and content actionability.
No other tool at this price point connects AI mention data to GA4 traffic and conversions. Otterly explicitly does not do this. If your marketing team needs to present AI visibility ROI to a CFO, mention rate data alone won't cut it. Conversion data will.
The Crawler Analytics module is something Otterly doesn't have at all. Monitoring which AI bots crawl your pages and at what frequency, then comparing that to actual referral traffic, gives you a signal that's invisible in any mention-tracking tool: the content AI is reading but not citing.
On content improvement: Otterly's GEO Audit tells you which on-page factors are weak. Lumentir's Answer Insights tell you specifically which pages are being cited by AI in your category (including competitor pages) and what those pages have that yours don't. That's an actionable gap analysis, not just a checklist.
Pricing Compared Fairly
Otterly's $29 Lite plan looks cheap, but 15 prompts is not enough for meaningful tracking in most competitive categories. The Standard plan at $189/month (100 prompts) is the practical entry point for business use, which is nearly 3x Lumentir's starting price of €55/month. At comparable prompt volumes and feature sets, Lumentir is significantly more affordable.
Who Should Use Which
Use Otterly if: You want the cheapest possible way to start, you need country-specific tracking in 50+ markets, or the GEO Audit's on-page factor checklist is a specific deliverable you need for an existing client.
Use Lumentir if: You need to connect AI visibility to traffic and revenue data, you want to understand your AI Click-Through Ratio, you need Answer Gap analysis to find queries where competitors appear but you don't, or you need page-level competitor citation analysis to guide your content strategy. Also if Grok tracking matters, since Otterly doesn't cover it.
Frequently Asked Questions
Does Otterly track Grok?
No. Grok is not currently included in Otterly's platform coverage. Lumentir tracks Grok alongside ChatGPT, Perplexity, Gemini, AI Overviews, and Copilot. Neither Otterly nor Lumentir currently tracks Claude.
Can Otterly connect to Google Analytics?
Otterly does not offer a native GA4 integration. It tracks mentions and citations in AI responses but does not connect those mentions to website traffic or conversion data.
Is Lumentir cheaper than Otterly?
At headline pricing, Otterly's $29 Lite plan is cheaper. But the Lite plan's 15 prompts is insufficient for most businesses. At comparable prompt volumes (100+), Lumentir's €55/month is significantly less expensive than Otterly's $189/month Standard plan.
Which tool is better for small teams?
Otterly for a quick, low-cost start. Lumentir for teams that need full-funnel attribution data alongside visibility tracking, since Otterly's mention data alone may not be enough to justify continued investment to stakeholders.