ChatGPT, Perplexity, and Google AI Overviews are the discovery engines. Otterly Lite adds Copilot. Geol Growth adds Google AI Mode.
Comparison of AI search tracking at $29/month. Both plans monitor four engines and share three of them: ChatGPT, Perplexity, and Google AI Overviews. Geol Growth's fourth engine is Google AI Mode; Otterly Lite's fourth is Microsoft Copilot. Geol also generates robots.txt, llms.txt, sitemap.xml, JSON-LD, Page Metadata, llms-full.txt and has a $0 Free plan. Otterly tracks daily with unlimited team members. Native CMS connectors are in development and not available. Sign in at /login.
People shop these tools on “4 engines” like it is a spec. It is not. Three of the four are the same on both sides: ChatGPT, Perplexity, and Google AI Overviews. Those are the discovery engines, the places buyers actually ask what to use and who to trust.
The fourth engine is where the plans split. Otterly Lite's fourth is Microsoft Copilot, a work assistant inside Windows and Office, not a discovery engine. Geol Growth's fourth is Google AI Mode, the AI results experience Google is rolling out in place of the ten blue links.
The add-on math follows from that. On Otterly Lite, Google AI Mode costs an extra $9/mo (Gemini $9/mo, Claude $29/mo). On Geol, Copilot and Gemini arrive with Professional ($79/mo), and Grok and Claude with Scale.
Geol Growth vs Otterly Lite. Figures on the Geol side come from the live pricing page. Otterly figures are from otterly.ai/pricing, checked 2026-08-27.
| Feature | Geol.ai Growth $29/mo | Otterly.AI Lite $29/mo |
|---|---|---|
| Engines at $29 | ||
| Engines included at $29 | ChatGPT, Google AI Mode, Perplexity, and Google AI Overview | ChatGPT, Google AI Overviews, Perplexity, MS Copilot |
| The shared three | ChatGPT, Perplexity, and Google AI Overview. Both products cover the discovery engines. | Same three: ChatGPT, Perplexity, and Google AI Overviews. |
| The fourth engine | Google AI Mode, the AI results experience Google is rolling out in place of the ten blue links. | MS Copilot, a Microsoft work assistant inside Windows and Office. |
| Engines that cost extra | Copilot and Gemini unlock on Professional ($79/mo). Grok and Claude unlock on Scale ($299/mo). | Claude, Google AI Mode, Gemini are paid add-ons on every self-serve plan. On Lite: Google AI Mode $9/mo, Gemini $9/mo, Claude $29/mo. |
| Price at the $29 entry | ||
| Headline paid plan | Growth $29/mo | Lite $29/mo ($25/mo billed annually) |
| Free access | Real Free plan at $0: 3 one-time scans, 3 format credits, 2 Prompt Explorer runs. Paid plans have a 14-day money-back guarantee; there is no time-limited free trial. | Free trial exists. Otterly does not publish a free forever plan. We do not assert a trial length because their site currently shows more than one duration. |
| What $29 actually buys | Weekly AI monitoring across ChatGPT, Google AI Mode, Perplexity, and Google AI Overview (15 prompt slots), plus URL scoring and 6 publishable format files (20/20/20 credits). | Daily AI-visibility monitoring and GEO audits across ChatGPT, Google AI Overviews, Perplexity, MS Copilot. 15 search prompts, 1,000 GEO audits/mo, 3 recommendations/week. No equivalent 6-file generator. |
| Monitoring | ||
| Tracking cadence | Weekly. Monitoring starts at Growth; Free and Starter have no AI monitoring. | Daily on Lite. |
| Prompt slots at $29 | 15 monitored prompt slots | 15 search prompts |
| Publishing & team | ||
| Publishable GEO files | Generates robots.txt, llms.txt, sitemap.xml, JSON-LD, Page Metadata, llms-full.txt. You download and publish them yourself. | Does not generate those six files. Monitoring and GEO-audit first. |
| CMS connectors | Native connectors (WordPress, Shopify, Wix, Webflow, Squarespace, BigCommerce, HubSpot) are in development and not available. There is no one-click CMS deploy. | Not a file-generation / CMS-publish product at the $29 tier. |
| Team seats at $29 | No extra seats on Growth (owner only). Extra seats start at Professional (+1). | Unlimited team members on Lite. |
| Pages / audits | Unlimited pages on every plan. Growth includes 20 scan credits/mo. Adding pages is free; scanning consumes credits. | 1,000 GEO audits/mo and 1 workspace on Lite. |
Start with the fourth engine, then check the rest of the week against each list.
Engines are not the only difference. Here is where each product genuinely wins at $29.
Geol Growth has no extra team seats. A second login starts at Professional ($79/mo, +1 seat). A 2–10 person team that wants everyone in the tool on $29 will find Otterly easier on seats.
If you need day-by-day mention movement at $29, Otterly Lite is built for that. Geol Growth runs monitoring weekly. That is a real gap, not a footnote.
Otterly’s headline $29 is monitoring-only, and engines beyond the base four cost extra. Geol’s $29 Growth plan includes ChatGPT, Google AI Mode, Perplexity, and Google AI Overview weekly, scores a URL, and generates the six files you publish. There is also a real $0 plan if you only want to try scans first.
Geol Growth includes ChatGPT, Google AI Mode, Perplexity, and Google AI Overview, weekly. Otterly Lite includes ChatGPT, Google AI Overviews, Perplexity, MS Copilot, daily. Geol includes Google AI Mode in the base four; Otterly sells Google AI Mode, Gemini, and Claude as add-ons. Otterly includes MS Copilot in the base four; Geol unlocks Copilot on Professional.
Both products help small marketing teams see how AI engines talk about a brand, and both have a $29/mo entry paid plan. They are not the same job. Otterly is monitoring- and audit-first with daily tracking. Geol scores a URL and generates 6 publishable format files (you upload them yourself), then adds weekly monitoring from Growth.
Yes, on paid plans: Geol Growth is $29/mo and Otterly Lite is $29/mo ($25/mo billed annually). Geol also has a $0 Free plan and a $9 Starter plan with no monitoring. Otterly’s next self-serve steps are Standard at $189/mo and Premium at $489/mo; Enterprise starts from $1,000/mo. Extra 100 prompts are $99/mo on Standard and Premium.
No. Otterly Lite tracks daily. Geol Growth monitors weekly. If daily cadence is a requirement, Otterly wins that row. Geol’s trade is format generation plus a free plan at the same headline price.
Not as extra seats. Growth is owner-only. Extra team seats start at Professional (+1 seat for $79/mo). Otterly Lite includes unlimited team members. That is a real Otterly advantage at $29.
Not today. Geol generates robots.txt, llms.txt, sitemap.xml, JSON-LD, Page Metadata, llms-full.txt for you to publish yourself. Native CMS connectors (WordPress, Shopify, Wix, Webflow, Squarespace, BigCommerce, HubSpot) are in development and not available. We do not offer one-click CMS deploy.
Otterly is a monitoring and GEO-audit product. It does not generate Geol’s six publishable files (robots.txt, llms.txt, sitemap.xml, JSON-LD, Page Metadata, llms-full.txt). If the reason you are comparing tools is “give me files to put on the site,” that is Geol’s job.
Geol has a real Free plan (no credit card required for that plan) and a 14-day money-back guarantee on paid plans, not a time-limited trial. Otterly offers a free trial; we do not assert a number of days because their public pages currently mention more than one duration.
Growth is $29/mo: ChatGPT, Google AI Mode, Perplexity, and Google AI Overview, weekly, with a 14-day money-back guarantee. Want to score a URL first? The Free plan is $0 with 3 scans. Auth is at /login.