Proofsource vs Rank Prompt
Rank Prompt gives teams and agencies six AI engines on every plan at a low published price, read on a weekly schedule. Proofsource re-reads four engines every day on Custom and puts a 95% interval on each figure, so a real change is easy to tell from noise.
Proofsource and Rank Prompt in five facts
Price
- Proofsource
- Free trial, then Custom from $64 per brand per month (final price discussed on demo call)
- Rank Prompt
- Starter $39, Pro $71, Agency $119, Agency Plus $239 a month, each billed annually; a free plan with 10 credits[1]
Free trial
- Proofsource
- 2 days free, 4 engines, no card
- Rank Prompt
- A free first report on your own prompts with no card; paid plans add a 7-day trial with 50 credits, card required[1]
AI engines covered
- Proofsource
- 4 on the trial, all 10 on Custom
How often answers are re-read
- Proofsource
- Daily on Custom, or hourly
- Rank Prompt
- Scheduled weekly or monthly; each scheduled run draws credits[1]
Seats
- Proofsource
- Unlimited on Custom
- Rank Prompt
- 1 owner seat on Starter, 2 on Pro, 10 on Agency, 25 on Agency Plus[1]
What Rank Prompt is, and who it is for
A credit-metered tracker with work attached. Rank Prompt asks six AI engines your buyers' prompts on a schedule, scores how often each answer names you, and adds a content studio, a technical SEO audit and outreach to the sites engines cite.[2]
Built to scale across brands and clients. Plans step from 10 brands and a single owner seat on Starter to 1,000 brands and 25 seats on Agency Plus, and the Agency tiers add white-label reports, client portal links and your own sending domain.[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 Rank Prompt, fact by fact
Each Rank Prompt cell links to the page it came from. Where Rank Prompt does not publish a detail, the cell says so instead of guessing.
| Question | Proofsource | Rank Prompt |
|---|---|---|
| Price | Free trial, then Custom from $64 per brand per month (final price discussed on demo call), arranged on a demo call | Starter $39, Pro $71, Agency $119, Agency Plus $239 a month, each billed annually; a free plan with 10 credits[1] |
| Free trial | 200 answers. 25 Prompts/Question. Top AI engines. 2 days. Free. No card, no sales call | A free first report on your own prompts with no card; paid plans add a 7-day trial with 50 credits, card required[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 |    Google AI Mode   Six: ChatGPT, Perplexity, Google AI Mode, Claude, Gemini and Grok; ChatGPT, Claude and Google AI Mode run by default[1][2] |
| 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 | Scheduled weekly or monthly; each scheduled run draws credits[1] |
| Seats | Unlimited seats on Custom, with client workspaces, scoped members, Client Viewer seats and SSO set up at onboarding | 1 owner seat on Starter, 2 on Pro, 10 on Agency, 25 on Agency Plus[1] |
| How a number is measured | A 95% Wilson interval on every percentage; alerts wait until a change clears it | Visibility is the share of collected answers that named you, per engine and per prompt; no interval published[1] |
| What it does about a gap | Each gap names the pages the engine cited instead, with a draft fix held for your approval | AI SEO tasks, a content studio, a technical SEO audit and outreach to the domains engines cite[2] |
Where each shines
Both tools are built well for different teams. Each point is a strength, read from that vendor's own pages.
Where Rank Prompt shines
- A published price you can buy today. Starter is $39 a month billed annually for 10 brands, with every plan self-serve and a free plan to start. Proofsource's Custom plan is arranged on a demo call.[1]
- Gemini and Grok on every plan. All six of Rank Prompt's engines are open on every plan, Gemini and Grok included. Proofsource adds those two on Custom.[1][2]
- Agency delivery built in. Agency adds white-label reports and exports, and Agency Plus a white-label app on your own domain with client logins.[1]
Where Proofsource shines
- Daily reads, not a weekly schedule. Proofsource re-asks every buyer question every day on Custom, because answer sets move 9-27% day over day in its own sampling. Rank Prompt schedules weekly or monthly runs.
- A margin of error beside every rate. Each Proofsource percentage carries a 95% Wilson interval, and alerts wait until a change clears it, so a quiet week is never reported as a win or a loss.
- Seats for the whole team. Custom includes unlimited seats, and Rank Prompt's plans range from a single owner seat on Starter to 2 on Pro.
Proofsource or Rank Prompt: the fair verdict
Pick Rank Prompt if price per brand and agency delivery decide it: published plans, six engines on every plan and white-label options from Agency up, and a weekly read is enough.
Pick Proofsource if the decision rests on whether a change is real: ChatGPT, Perplexity, Claude and Google AI Overviews re-read daily on Custom, an interval on every figure and a draft fix for each gap, held for your approval.
Both let you see a first report free with no card, so the fairest test is to run the same buyer questions through each.
Choose Rank Prompt if you want
- A published price you can buy today
- Gemini and Grok on every plan
- Agency delivery built in
Choose Proofsource if you want
- Daily reads, not a weekly schedule
- A margin of error beside every rate
- Seats for the whole team
Already using Rank Prompt?
You do not have to choose on day one. Here is how teams run Proofsource beside Rank Prompt and decide on their own data.
Keep Rank Prompt running
Nothing about trying Proofsource needs you to stop Rank Prompt. Your history and reports there stay where they are.
Bring your questions across
Export or copy the prompts you track in Rank Prompt 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 Rank Prompt: what buyers ask
How can I check which buyer questions consistently get my company recommended by AI assistants versus competitors?
Ask the same questions on several engines and keep the results per question; both tools do. Rank Prompt reports which answers named you, your score per engine and per prompt, the competitors named instead and the sources cited. Proofsource reports the same on ChatGPT, Perplexity, Claude and Google AI Overviews, with a 95% interval on each rate, and reads daily on Custom, which is what turns one answer into a consistent pattern.
What's the best tool for daily monitoring of my brand's visibility across ChatGPT, Perplexity, Claude and Google AI Overviews?
Check the schedule before the engine list. Rank Prompt's pricing describes weekly or monthly scheduled reports across its six engines. Proofsource re-asks ChatGPT, Perplexity, Claude and Google AI Overviews every day on Custom, and its free trial reads every engine on 2 consecutive days.
Can Rank Prompt score AI visibility against category benchmarks?
It scores visibility as the share of collected AI answers that named your brand, from 0 to 100%, overall, per engine and per prompt, next to the competitors named instead. Proofsource reports the same per question and engine and adds a 95% interval, so a gap to a competitor is a measured difference rather than one draw.
How much does Rank Prompt cost?
Its pricing page lists Starter at $39, Pro at $71, Agency at $119 and Agency Plus at $239 a month, each billed annually ($470, $855, $1,430 and $2,870 a year), plus a free plan with 10 credits.
Does Rank Prompt have a free trial?
Yes, two kinds: a full first report on your own prompts with no card, and a 7-day trial with 50 credits on each paid plan, which needs a card. Proofsource's trial: 200 answers. 25 Prompts/Question. Top AI engines. 2 days. Free. No card.
Where each fact about Rank Prompt comes from
- Rank Prompt pricing, read 5 Oct 2026.
- Rank Prompt homepage, read 5 Oct 2026.
Vendors change their pages. If a Rank Prompt 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
