Proofsource vs Foglift
Foglift pairs unlimited free technical audits with token-metered monitoring across five engines, up to hourly. Proofsource reads Google AI Overviews and Claude on every plan, and prints an interval beside every percentage.
Proofsource and Foglift in five facts
Price
- Proofsource
- Free trial, then Custom from $64 per brand per month (final price discussed on demo call)
- Foglift
- Free $0; Launch $49 and Growth $129 a month; Enterprise custom; extra tokens $9 per 500[1]
Free trial
- Proofsource
- 2 days free, 4 engines, no card
- Foglift
- A free tier with no card: 200 tokens a month and weekly Perplexity monitoring[1]
AI engines covered
- Proofsource
- 4 on the trial, all 10 on Custom
- Foglift
- Paid plans: ChatGPT (with web search), Perplexity, Google AI Overview, Claude and Gemini[1]
How often answers are re-read
- Proofsource
- Daily on Custom, or hourly
- Foglift
- Weekly (Free), daily (Launch), twice daily (Growth), hourly (Enterprise)[1]
Seats
- Proofsource
- Unlimited on Custom
- Foglift
- 1, 3, 10 or unlimited by plan[1]
What Foglift is, and who it is for
Pay for the queries you run. Each prompt on each engine costs 1 to 5 tokens, and plans are monthly token allowances; monitoring pauses when tokens run out unless you buy a pack.[1]
Audits for free. Technical audits, an AI readiness score, content briefs, AI crawler analytics, audit history and PDF reports cost no tokens on any plan.[1]
Built for developers too. Paid plans include a REST API, a CLI and an MCP server for Claude Code, Cursor and Windsurf, so audits can run in CI.[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 Foglift, fact by fact
Each Foglift cell links to the page it came from. Where Foglift does not publish a detail, the cell says so instead of guessing.
| Question | Proofsource | Foglift |
|---|---|---|
| Price | Free trial, then Custom from $64 per brand per month (final price discussed on demo call), arranged on a demo call | Free $0; Launch $49 and Growth $129 a month; Enterprise custom; extra tokens $9 per 500[1] |
| Free trial | 200 answers. 25 Prompts/Question. Top AI engines. 2 days. Free. No card, no sales call | A free tier with no card: 200 tokens a month and weekly Perplexity monitoring[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 |     Paid plans: ChatGPT (with web search), Perplexity, Google AI Overview, Claude and Gemini[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 | Weekly (Free), daily (Launch), twice daily (Growth), hourly (Enterprise)[1] |
| Seats | Unlimited seats on Custom, with client workspaces, scoped members, Client Viewer seats and SSO set up at onboarding | 1, 3, 10 or unlimited by plan[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 | Technical audits, AI readiness score, content briefs and AI crawler analytics[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 Foglift shines
- A permanent free tier. Free includes unlimited technical audits and weekly Perplexity monitoring for one brand, with no card.[1]
- Faster cadence on higher plans. Growth monitors twice a day and Enterprise hourly.[1]
- Gemini on paid plans. Foglift's paid plans add Gemini to the four engines Proofsource covers on every plan.[1]
Where Proofsource shines
- All four engines in the free trial. 200 answers. 25 Prompts/Question. Top AI engines. 2 days. Free. No card, no sales call. Foglift's free tier monitors Perplexity weekly.[1]
- Root cause with each gap. Each Proofsource gap names the pages the engine cited instead, with a draft held for your approval. Foglift's own tools are audits, content briefs and crawler analytics.[1]
- An interval on every percentage. Proofsource prints a 95% Wilson interval beside every percentage and holds alerts until a change clears it. Foglift's pricing page does not describe how it treats run-to-run variation.
Proofsource or Foglift: the fair verdict
Pick Foglift if you want free technical audits, a free monitoring tier, developer tooling, and the option of twice-daily or hourly checks.
Pick Proofsource if you want all of ChatGPT, Perplexity, Claude and Google AI Overviews read daily from the trial onward, without metering, and an interval beside every percentage.
Choose Foglift if you want
- A permanent free tier
- Faster cadence on higher plans
- Gemini on paid plans
Choose Proofsource if you want
- All four engines in the free trial
- Root cause with each gap
- An interval on every percentage
Already using Foglift?
You do not have to choose on day one. Here is how teams run Proofsource beside Foglift and decide on their own data.
Keep Foglift running
Nothing about trying Proofsource needs you to stop Foglift. Your history and reports there stay where they are.
Bring your questions across
Export or copy the prompts you track in Foglift 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 Foglift: what buyers ask
What's the best tool to track whether ChatGPT, Perplexity, Claude and Google AI Overviews recommend my brand over competitors?
When we asked AI engines this, some answers named Foglift, whose paid plans monitor those four engines plus Gemini, metered in tokens. Proofsource reads exactly ChatGPT, Perplexity, Claude and Google AI Overviews on every plan, the free trial included, and shows who gets named instead of you.
What happens when Foglift tokens run out?
Monitoring pauses until tokens reset at the next billing period, unless you buy a pack at $9 per 500 tokens. Audits keep working.
Does Foglift have a free plan?
Yes: 200 tokens a month, unlimited technical audits and weekly Perplexity monitoring, with no card.
Where each fact about Foglift comes from
- Foglift pricing and pricing FAQ, read 5 Oct 2026.
Vendors change their pages. If a Foglift 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
