If you're comparing AI visibility platforms, there's a good chance Profound, Otterly AI, and Subsig are all sitting open in the same browser tab group right now. That's not a coincidence. They solve the same basic problem, tracking how your brand shows up across ChatGPT, Claude, Perplexity, and Gemini, but they were built for different teams solving different problems.

That tab group didn't happen by accident. More buyers are asking ChatGPT and Perplexity about a company before they ever type its name into Google, which means the old playbook, optimize the website, run some ads, wait for organic traffic to climb, doesn't cover how people are actually finding you anymore. As Search Engine Land and others in the industry have tracked, AI visibility monitoring exists because businesses need to know what's being said about them in a conversation they can't see and can't control.

The problem is that most comparisons of these three tools read like feature checklists: the same six checkmarks under a different logo. That's not useful when you're the one signing the contract. What actually matters is which platform matches the stage your business is at right now, not which one has the longest features page.

Here's the direct comparison. No demo call required.

The real question isn't features, it's fit.

Every AI visibility tool will tell you it tracks "AI search." That's table stakes now. The question that actually matters is who the tool was built for, and what happens once you're past the trial.

Profound spans the widest range of the three: a $99/month self-serve tier that tracks ChatGPT only, a $399/month Growth tier that adds two more engines, and a custom Enterprise plan with compliance features for large teams. Otterly AI was built for a small team that wants a fast, cheap answer to a simple question. Subsig sits in between, covering AI visibility monitoring plus reviews and brand mentions in one dashboard without needing an enterprise contract to get there.

Profound vs Otterly AI vs Subsig at a Glance

All three prices above are confirmed directly from each platform's own pricing page: Profound, Otterly AI, and Subsig (checked July 2026).

Subsig is the only one of the three with a real free tier. Its Starter plan and Otterly AI's Lite plan both track fewer AI engines than their higher tiers or Profound's Growth plan.

Which AI engines each platform actually tracks

"AI visibility" isn't one thing. ChatGPT, Claude, Perplexity, and Gemini each surface different sources and cite different pages, so the engines a platform actually covers matter more than the category label. Coverage varies more than most comparisons let on, and it scales by tier on all three platforms.

Profound's engine count scales by tier: ChatGPT only at Starter, 3 engines at Growth, up to 9 at Enterprise. Otterly AI's Lite tier includes 4 engines out of the gate: ChatGPT, Google AI Overviews, Perplexity, and Microsoft Copilot, with Claude, Gemini, and Google AI Mode available as paid add-ons on top. Subsig's coverage also scales by tier: Starter tracks ChatGPT only, Pro adds Perplexity, and Advanced adds Google AI Overview. Claude, Gemini, and Copilot aren't covered at any current Subsig tier.

Profound and Subsig both scale engine coverage by paid tier. Otterly AI's base tiers all include the same 4 engines, with 3 more available as add-ons regardless of plan.

Profound: scales from self-serve to enterprise

Profound splits into three tiers: Starter ($99/month, billed yearly) tracks ChatGPT only with 50 tracked prompts and email support. Growth ($399/month, billed yearly, marked "Popular") expands to 3 answer engines and 100 prompts. Enterprise (custom pricing) adds up to 9 answer engines, multiple companies tracked, a tailored prompt plan, dedicated Slack support, and SSO/SAML plus SOC 2 compliance.

Starter and Growth are self-serve; you can sign up directly from Profound's pricing page without talking to sales. Only Enterprise requires a demo call. The tradeoff at the entry tier is coverage: if your buyers are asking Claude or Perplexity about you and not just ChatGPT, the $99 plan won't show you that; you'd need Growth or higher.

See it in action: Watch Profound demo videos on YouTube

Otterly AI: built for speed and price

At $29/month, Otterly AI's Lite tier tracks 15 search prompts across 4 AI engines: ChatGPT, Google AI Overviews, Perplexity, and Microsoft Copilot, enough to answer the basic question fast: are you showing up in AI search or not?

Industry research from DataDab identifies Otterly AI as one of the established platforms in the AI visibility market, helping businesses understand whether their brand is being mentioned, cited, or recommended by AI assistants such as ChatGPT, Gemini, Claude, Microsoft Copilot, and Perplexity.

Scaling up costs real money: Standard jumps to $189/month for 100 prompts, plus API access, MCP access, and agent analytics, and Premium is $489/month for 400 prompts, aimed at mid-sized businesses and agencies. Claude, Gemini, and Google AI Mode aren't included at any tier; they're paid add-ons on top of the base price.

See it in action: How to Use Otterly AI (2026) — The Complete Guide to AI Search Visibility

Subsig: built for the businesses in between

Subsig covers the same core AI visibility monitoring as the other two, then adds review management and brand monitoring in the same dashboard. 

Verified user reviews on Capterra, G2, and TrustRadius consistently highlight Subsig's review monitoring, competitor analysis, AI search visibility, and centralized dashboard for managing reviews and brand mentions, reinforcing its value for teams that want a more unified approach to reputation and AI visibility.

The tradeoff: it's a newer platform than Profound or Otterly AI, and some of the deepest enterprise reporting is still being built out. What you get in exchange is one subscription instead of three, and a single place to see AI visibility, reviews, and brand mentions together instead of stitching the picture together yourself.

Subsig is also the only one of the three with a genuine free tier: $0/month gets 3 AI visibility prompts, 6 review platforms tracked, and 1,000 reviews capacity, enough to see if it's worth upgrading before paying anything. Paid tiers run $79/month (Starter, 25 prompts, ChatGPT only), $159/month (Pro, 50 prompts, adds Perplexity), and $349/month (Advanced, 100 prompts, adds Google AI Overview), with a custom Personalized tier above that.

The honest tradeoff on the other side: Subsig doesn't track Claude, Gemini, or Copilot at any tier yet, only ChatGPT, Perplexity, and Google AI Overview, depending on plan. If your buyers are asking Claude specifically, this isn't the tool for that today.

Why businesses choose Subsig

• Genuine free tier. Start at $0/month with no credit card required.

• 3-in-1 platform. AI visibility, reviews, and brand mentions in one place.

• User-friendly interface. An intuitive dashboard built for quick access to key insights.

• Easy to get started. A straightforward experience for new and experienced users alike.

• Centralized reporting. Monitor AI visibility and brand performance from a single dashboard.

• Broader brand intelligence. Connect AI search visibility with customer reviews and online mentions.

• Actionable insights. Turn data into practical opportunities to strengthen your digital presence.

Example: a Subsig dashboard showing AI visibility score, rank, mentions, and competitor benchmarking in one view (brand names anonymized).

Feature Comparison

Also weighing dedicated brand monitoring tools? See our Talkwalker vs Brandwatch comparison.

Which is better?

There isn't a single winner here, because "better" depends on which problem you're actually solving.

• Pick Profound if you want the option to start small (ChatGPT-only tracking at $99/month) and grow into multi-engine coverage or enterprise-grade compliance as your needs change.

• Pick Otterly AI if you want the cheapest paid entry point that still covers 4 major engines out of the box, and you don't need reviews or brand monitoring bundled in.

• Pick Subsig if you want to start free, or you care more about bundling reviews and brand monitoring with AI visibility than having Claude or Gemini covered from day one.

The tools that win the next few years of AI search won't be the ones with the longest feature list. They'll be the ones that make it easy to act on what you find. Go see which one is for you.

Subsig is the AI visibility platform that helps brands track mentions, manage reviews, and monitor brand reputation across ChatGPT, Claude, Perplexity, and Gemini, all in one place.

Curious where you stand today?