Proofsource vs MentionGEO
MentionGEO is an inexpensive weekly tracker with on-demand manual prompts. Proofsource can read the engines every day and puts an interval on every number.
Proofsource and MentionGEO in five facts
Price
- Proofsource
- Free trial, then plans from $9 a month (5 questions on ChatGPT, weekly)
- MentionGEO
- Starter $15/mo (list $29), Pro $40/mo (list $79), Max $199/mo; founding-member discount[1]
Free trial
- Proofsource
- 2 days free, 4 engines, no card
- MentionGEO
- 7-day free trial on Starter, no credit card; Pro and Max start at checkout[1]
AI engines covered
- Proofsource
- 4 on the trial, up to 4 on a paid plan
- MentionGEO
- ChatGPT, Claude, Gemini, Google AI and Perplexity[1]
How often answers are re-read
- Proofsource
- Daily, weekly or monthly, you choose
- MentionGEO
- Weekly scans, plus 80 to 2,500 manual prompts a month by plan[1]
Seats
- Proofsource
- Unlimited team members
- MentionGEO
- Not published
What MentionGEO is, and who it is for
A brand visibility tracker for small teams. MentionGEO tracks how ChatGPT, Claude, Gemini, Google AI and Perplexity talk about your brand, with a visibility score, share of voice against competitors and recommendations.[1]
Weekly scans plus manual prompts. Plans include weekly scans for active brands and a monthly allowance of manual prompts for on-demand checks, aimed at founders, SaaS, DTC brands and agencies.[1]
Proofsource is an AI intelligence platform that shows which buyer questions name your brand in ChatGPT, Perplexity, Claude and Google AI Overviews, who gets named instead, and exactly what to fix.
Proofsource and MentionGEO, fact by fact
Each MentionGEO cell links to the page it came from. Where MentionGEO does not publish a detail, the cell says so instead of guessing.
| Question | Proofsource | MentionGEO |
|---|---|---|
| Price | Free trial, then one price card at self-serve checkout: each brand pays daily ($28 a brand a month) or weekly ($7), plus each question on each engine, plans from $9 a month (5 questions on ChatGPT, weekly). No overage charges | Starter $15/mo (list $29), Pro $40/mo (list $79), Max $199/mo; founding-member discount[1] |
| Free trial | 200 answers. 25 Prompts/Question. Top AI engines. 2 days. Free. No card, no sales call | 7-day free trial on Starter, no credit card; Pro and Max start at checkout[1] |
| AI engines covered | ChatGPT, Perplexity, Claude and Google AI Overviews on the trial. Paid plans pick from those 4, each priced per question; Google AI Mode, Gemini, Microsoft Copilot, Grok, DeepSeek and Meta AI are enabled on a call |     ChatGPT, Claude, Gemini, Google AI and Perplexity[1] |
| How often answers are re-read | Daily or weekly, chosen per plan; daily is one answer per question per engine per UTC day. The trial reads every engine on 2 consecutive days | Weekly scans, plus 80 to 2,500 manual prompts a month by plan[1] |
| Seats | Unlimited team members on every plan. The agency workspace is free, with client workspaces, scoped members and Client Viewer seats set up on a call | Not published |
| How a number is measured | A 95% Wilson interval on every percentage; alerts wait until a change clears it | Not published |
| What it does about a gap | Each gap names the pages the engine cited instead, with a draft fix held for your approval | AI Recommendations Engine on Pro and Max[1] |
Where each shines
Both tools are built well for different teams. Each point is a strength, read from that vendor's own pages.
Where MentionGEO shines
Where Proofsource shines
- Daily, if you want it. A Proofsource plan can re-read every question every day. MentionGEO's included scans are weekly.[1]
- Intervals on every number. Proofsource samples each question repeatedly and publishes a 95% Wilson interval with every score.
- Fixes tied to the cited page. Each gap names the pages the engine cited instead of you, with a draft fix held for your approval.
Proofsource or MentionGEO: the fair verdict
MentionGEO fits a founder who wants a weekly read on AI visibility for very little money.
Proofsource fits a team that needs daily readings, stated uncertainty and a drafted fix for each gap.
Choose MentionGEO if you want
- A very low entry price
- Gemini included
- On-demand checks
Choose Proofsource if you want
- Daily, if you want it
- Intervals on every number
- Fixes tied to the cited page
Already using MentionGEO?
You do not have to choose on day one. Here is how teams run Proofsource beside MentionGEO and decide on their own data.
Keep MentionGEO running
Nothing about trying Proofsource needs you to stop MentionGEO. Your history and reports there stay where they are.
Bring your questions across
Export or copy the prompts you track in MentionGEO and add them as buyer questions in Proofsource, so both tools ask the same things.
Run both side by side
Read the two for the same days on your own domain. Where the numbers differ, Proofsource shows the answers and the pages each engine cited, so you can see why.
Keep what serves your team
Many teams keep one tool for reporting and another for fixes. Pick on your own evidence, not on a comparison page.
Proofsource or MentionGEO: what buyers ask
How can I monitor where AI assistants recommend my company versus competitors in my category?
Run your buyer questions on the engines regularly and compare the brands named. MentionGEO scans weekly with share of voice against competitors; Proofsource can read ChatGPT, Perplexity, Claude and Google AI Overviews every day and shows who gets named instead of you.
How much does MentionGEO cost?
MentionGEO lists Starter at $15 a month, Pro at $40 and Max at $199 under a founding-member offer.
How often does MentionGEO scan?
Weekly for active brands, with manual prompts for on-demand checks.
Is there a free trial of Proofsource?
Yes. 200 answers. 25 Prompts/Question. Top AI engines. 2 days. Free. No card, no sales call. After that, plans from $9 a month (5 questions on ChatGPT, weekly).
Where each fact about MentionGEO comes from
- MentionGEO homepage and pricing, read Oct 5, 2026.
Vendors change their pages. If a MentionGEO fact here no longer matches their site, tell us through the contact page and we will correct it.
Your own trial settles this faster than any comparison page.
200 answers. 25 Prompts/Question. Top AI engines. 2 days. Free. No card, and the report is about your domain: which buyer questions name you, who gets named instead, and what to fix.
Google AI OverviewsGoogle AI Mode
