Proofsource vs Vizzybl
Vizzybl offers a free tier, agent-led GEO audits and deep research on real user prompts, with up to eight engines on its Ultra plan. Proofsource reads ChatGPT, Perplexity, Claude and Google AI Overviews from the free trial, with an interval on every figure.
Proofsource and Vizzybl in five facts
Price
- Proofsource
- Free trial, then plans from $9 a month (5 questions on ChatGPT, weekly)
- Vizzybl
- Free £0; Pro £430 a year; Ultra £960 a year; Enterprise from £700 a month[1]
Free trial
- Proofsource
- 2 days free, 4 engines, no card
- Vizzybl
- Free forever tier, no credit card; log in at least once every 30 days to keep it[1]
AI engines covered
- Proofsource
- 4 on the trial, up to 4 on a paid plan
- Vizzybl
- Free: Gemini, ChatGPT. Pro: 5, adding Claude, Perplexity, Copilot. Ultra: 8, adding Google AI Overviews, Google AI Mode, Grok[1]
How often answers are re-read
- Proofsource
- Daily, weekly or monthly, you choose
- Vizzybl
- Daily pipelines that re-scan and snapshot findings[2]
Seats
- Proofsource
- Unlimited team members
- Vizzybl
- Team collaboration on Ultra[1]
What Vizzybl is, and who it is for
A supervisor agent and its specialists. Vizzybl's supervisor routes work to specialist agents that monitor, analyze and optimize how answer engines cite you, on daily pipelines that re-scan and snapshot findings.[2]
From solopreneurs to global organizations. Its plans run from a free tier for solopreneurs to Ultra for multi-product portfolios and Enterprise from £700 a month.[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 Vizzybl, fact by fact
Each Vizzybl cell links to the page it came from. Where Vizzybl does not publish a detail, the cell says so instead of guessing.
| Question | Proofsource | Vizzybl |
|---|---|---|
| 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 | Free £0; Pro £430 a year; Ultra £960 a year; Enterprise from £700 a month[1] |
| Free trial | 200 answers. 25 Prompts/Question. Top AI engines. 2 days. Free. No card, no sales call | Free forever tier, no credit card; log in at least once every 30 days to keep it[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 |     Copilot Google AI OverviewsGoogle AI Mode Free: Gemini, ChatGPT. Pro: 5, adding Claude, Perplexity, Copilot. Ultra: 8, adding Google AI Overviews, Google AI Mode, Grok[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 | Daily pipelines that re-scan and snapshot findings[2] |
| 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 | Team collaboration on Ultra[1] |
| 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 | Monthly GEO audit, single-page audits, deep analysis and brand intelligence findings[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 Vizzybl shines
Where Proofsource shines
- Four engines in the trial. 25 buyer questions on ChatGPT, Perplexity, Claude and Google AI Overviews in the free trial; Vizzybl adds Google AI Overviews on Ultra.
- An interval with each rate. Each Proofsource percentage carries a 95% Wilson interval.
- Fixes approved by a person. Drafts come from the pages that beat you and wait for approval.
Proofsource or Vizzybl: the fair verdict
Vizzybl gives you a free way in and an agent team for audits and research, with its widest engine set on Ultra.
Proofsource gives you the four engines most buyers use from the first scan, a stated margin of error on every figure, and drafted fixes approved before anything ships.
Choose Vizzybl if you want
- A free tier that lasts
- Eight engines on Ultra
Choose Proofsource if you want
- Four engines in the trial
- An interval with each rate
- Fixes approved by a person
Already using Vizzybl?
You do not have to choose on day one. Here is how teams run Proofsource beside Vizzybl and decide on their own data.
Keep Vizzybl running
Nothing about trying Proofsource needs you to stop Vizzybl. Your history and reports there stay where they are.
Bring your questions across
Export or copy the prompts you track in Vizzybl 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 Vizzybl: what buyers ask
Which AI visibility monitoring tool shows which ways of asking name my brand and which leave it out?
Some AI answers to that question named Vizzybl, which asks the engines your highest-intent prompts and measures whether and how you get cited. Proofsource shows, question by question and engine by engine across ChatGPT, Perplexity, Claude and Google AI Overviews, where you are named and who is named instead, with a 95% interval on each rate.
How much does Vizzybl cost?
Free is £0, Pro £430 a year, Ultra £960 a year and Enterprise from £700 a month.
Does Vizzybl have a free plan?
Yes: 4 prompts on Gemini and ChatGPT with a monthly GEO audit, no card, if you log in at least once every 30 days.
Where each fact about Vizzybl comes from
- Vizzybl pricing, read Oct 5, 2026.
- Vizzybl homepage, read Oct 5, 2026.
Vendors change their pages. If a Vizzybl 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
