Proofsource vs LLM Monitor
LLM Monitor is one of the cheapest ways to start watching four AI engines. Proofsource costs more and does more with each answer: an interval on every number, the pages cited instead, and a drafted fix per gap.
Proofsource and LLM Monitor in five facts
Price
- Proofsource
- Free trial, then Custom from $64 per brand per month (final price discussed on demo call)
- LLM Monitor
- Lite €19 a month (25 prompts per scan, every 3 days); Standard €29 a month (50 prompts, daily); Pro €69 a month[1]
Free trial
- Proofsource
- 2 days free, 4 engines, no card
- LLM Monitor
- Up to 3 prompts and 2 scans, no credit card[1]
AI engines covered
- Proofsource
- 4 on the trial, all 10 on Custom
- LLM Monitor
- ChatGPT, Gemini, Claude and Perplexity; Pro adds ChatGPT Mini[1]
How often answers are re-read
- Proofsource
- Daily on Custom, or hourly
- LLM Monitor
- Every 3 days on Lite; daily on Standard and Pro[1]
Seats
- Proofsource
- Unlimited on Custom
- LLM Monitor
- Not published
What LLM Monitor is, and who it is for
Four engines, small plans. LLM Monitor tracks brand visibility across ChatGPT, Gemini, Claude and Perplexity and says it is built for marketing teams and agencies. You give it your site, prompts and competitor domains.[1]
Mentions, sentiment, sources. It reports your mention rate, sentiment and the sources cited, with competitor share of voice, historical trends and alerts when visibility shifts. Free tools for an AEO audit and a ChatGPT brand check sit alongside it.[1]
For lean budgets. The plans differ by prompts per scan and scan frequency, so it suits a small brand or a lean team that knows roughly how many questions it wants to watch.[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 LLM Monitor, fact by fact
Each LLM Monitor cell links to the page it came from. Where LLM Monitor does not publish a detail, the cell says so instead of guessing.
| Question | Proofsource | LLM Monitor |
|---|---|---|
| Price | Free trial, then Custom from $64 per brand per month (final price discussed on demo call), arranged on a demo call | Lite €19 a month (25 prompts per scan, every 3 days); Standard €29 a month (50 prompts, daily); Pro €69 a month[1] |
| Free trial | 200 answers. 25 Prompts/Question. Top AI engines. 2 days. Free. No card, no sales call | Up to 3 prompts and 2 scans, no credit card[1] |
| AI engines covered | ChatGPT, Perplexity, Claude and Google AI Overviews on the trial. Custom covers all 10 engines, adding Google AI Mode, Gemini, Microsoft Copilot, Grok, DeepSeek and Meta AI, switched on at onboarding |     ChatGPT, Gemini, Claude and Perplexity; Pro adds ChatGPT Mini[1] |
| How often answers are re-read | Daily on Custom by default, one answer per question per engine per UTC day, or hourly or any frequency you choose; the trial reads every engine on 2 consecutive days | Every 3 days on Lite; daily on Standard and Pro[1] |
| Seats | Unlimited seats on Custom, with client workspaces, scoped members, Client Viewer seats and SSO set up at onboarding | Not published |
| How a number is measured | A 95% Wilson interval on every percentage; alerts wait until a change clears it | Agents in several regions query each LLM with your prompts; responses are checked for mention, sentiment and sources[1] |
| What it does about a gap | Each gap names the pages the engine cited instead, with a draft fix held for your approval | Alerts when visibility shifts, and action recommendations from Standard up[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 LLM Monitor shines
- A very low entry price. Plans are published in euros, and daily scans arrive on the second plan.[1]
- Gemini on the standard list. Gemini is in every LLM Monitor plan. Proofsource adds Gemini on Custom.[1]
- Alerts and free tools. It alerts you when visibility shifts and offers a free AEO audit and ChatGPT brand check before you sign up.[1]
Where Proofsource shines
- Google AI Overviews included. Proofsource's standard panel is ChatGPT, Perplexity, Claude and Google AI Overviews. LLM Monitor's engine list does not include Google AI Overviews.
- Intervals for small prompt sets. With a small prompt set, telling a real drop from a noisy day is the whole question. Every Proofsource percentage carries a 95% Wilson interval.
- A bigger trial and a drafted fix. The Proofsource trial covers 25 buyer questions on 4 engines, where LLM Monitor's covers up to 3 prompts, and each gap comes with the pages cited instead and a draft held for approval.
Proofsource or LLM Monitor: the fair verdict
LLM Monitor is a sensible first tracker if budget decides and the four engines it covers are the ones you care about.
Proofsource fits better once the numbers have to stand up in a meeting: Google AI Overviews on the standard panel, an interval on every share, and a drafted fix for each gap rather than a chart to interpret.
Choose LLM Monitor if you want
- A very low entry price
- Gemini on the standard list
- Alerts and free tools
Choose Proofsource if you want
- Google AI Overviews included
- Intervals for small prompt sets
- A bigger trial and a drafted fix
Already using LLM Monitor?
You do not have to choose on day one. Here is how teams run Proofsource beside LLM Monitor and decide on their own data.
Keep LLM Monitor running
Nothing about trying Proofsource needs you to stop LLM Monitor. Your history and reports there stay where they are.
Bring your questions across
Export or copy the prompts you track in LLM Monitor 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 LLM Monitor: what buyers ask
Are there alternatives to Scrunch AI that score my weighted share of AI-cited pages on the same scale as competitors?
Yes, several tools score you and your competitors on the same prompts. LLM Monitor reports mention rate, share of voice and the sources cited. Proofsource reports the share of buyer questions that name you on each engine, the pages cited instead, and an interval on every share so two brands can be compared fairly.
How often does LLM Monitor scan?
Every 3 days on Lite and daily on Standard and Pro, according to its pricing. Proofsource re-reads every day on Custom, and the trial runs its scans a day apart.
Does LLM Monitor track Google AI Overviews?
Its published engine list is ChatGPT, Gemini, Claude and Perplexity, with ChatGPT Mini on Pro. Proofsource reads ChatGPT, Perplexity, Claude and Google AI Overviews on every plan.
Is there a free trial of LLM Monitor or Proofsource?
Both have one. LLM Monitor's covers up to 3 prompts and 2 scans with no card. Proofsource's trial: 200 answers. 25 Prompts/Question. Top AI engines. 2 days. Free. No card, no sales call.
Where each fact about LLM Monitor comes from
- LLM Monitor homepage, pricing and FAQ, read 5 Oct 2026.
Vendors change their pages. If a LLM Monitor 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
