Proofsource vs Gauge
Gauge sells volume: 600 prompts a day across six platforms, a content engine and CMS publishing in one published plan. Proofsource includes Claude on every plan, starts free with no card, and attaches an interval to every percentage.
Proofsource and Gauge in five facts
Price
- Proofsource
- Free trial, then Custom from $64 per brand per month (final price discussed on demo call)
- Gauge
- Growth $599 a month; Enterprise custom through a demo[1]
Free trial
- Proofsource
- 2 days free, 4 engines, no card
AI engines covered
- Proofsource
- 4 on the trial, all 10 on Custom
- Gauge
- 6 on Growth: ChatGPT, Google AI Overviews, Google AI Mode, Gemini, Perplexity and Microsoft Copilot. Claude and Grok on Enterprise, or on any plan with your own API key[1]
How often answers are re-read
- Proofsource
- Daily on Custom, or hourly
- Gauge
- Daily[1]
Seats
- Proofsource
- Unlimited on Custom
- Gauge
- 5 on Growth; custom on Enterprise[1]
What Gauge is, and who it is for
One plan, a lot of answers. Gauge's Growth plan runs 600 prompts every day across six platforms, which it counts as 108,000 answers a month, and bundles 18 publish-ready articles, five seats and exports.[1]
Two products. Gauge Chat tracks how AI answers describe and recommend a brand. Gauge Agents is a separate product for developer tools, showing how coding agents such as Claude Code, Codex and Cursor discover, read and choose a product.[2]
Wired into the marketing stack. It connects GA4, Google Search Console and DataForSEO, publishes to Webflow, Framer, Sanity and GitHub, and offers Slack and MCP access. Its homepage shows developer-tool brands such as Supabase, PostHog and Mintlify.[1][2]
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 Gauge, fact by fact
Each Gauge cell links to the page it came from. Where Gauge does not publish a detail, the cell says so instead of guessing.
| Question | Proofsource | Gauge |
|---|---|---|
| Price | Free trial, then Custom from $64 per brand per month (final price discussed on demo call), arranged on a demo call | Growth $599 a month; Enterprise custom through a demo[1] |
| Free trial | 200 answers. 25 Prompts/Question. Top AI engines. 2 days. Free. No card, no sales call | 1-week free trial on Growth; no card required to start[1][2] |
| 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 OverviewsGoogle AI Mode     6 on Growth: ChatGPT, Google AI Overviews, Google AI Mode, Gemini, Perplexity and Microsoft Copilot. Claude and Grok on Enterprise, or on any plan with your own API key[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 | Daily[1] |
| Seats | Unlimited seats on Custom, with client workspaces, scoped members, Client Viewer seats and SSO set up at onboarding | 5 on Growth; custom on Enterprise[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 | Action Center recommendations, 18 articles a month from the content engine, the Ask Gauge agent and CMS publishing[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 Gauge shines
- Volume at a low cost per answer. Gauge's own math puts Growth at about half a cent per answer, with 600 prompts on six platforms every day.[1]
- Publishing built in. Articles go from the content engine straight to Webflow, Framer, Sanity or GitHub.[1]
- Copilot and AI Mode in the plan. Microsoft Copilot, Google AI Mode and Gemini are part of Growth. Proofsource adds them on Custom.[1]
- Coding-agent visibility. For developer tools, Gauge Agents covers a channel Proofsource does not measure: whether coding agents select and install your product.[2]
Where Proofsource shines
- Claude without bringing a key. Proofsource reads ChatGPT, Perplexity, Claude and Google AI Overviews on every plan. On Gauge, Claude comes with Enterprise or with your own Anthropic API key, billed to you by the provider.[1]
- Start smaller. 200 answers. 25 Prompts/Question. Top AI engines. 2 days. Free. No card, no sales call. Paid use is Custom from $64 per brand per month (final price discussed on demo call), sized to the brands you track rather than one fixed volume.
- An interval on every percentage. Proofsource publishes a 95% Wilson interval with every percentage and holds alerts until a change clears it. Gauge's pricing page explains its volume, not how it treats run-to-run variation.
Proofsource or Gauge: the fair verdict
Pick Gauge if you want high daily prompt volume across Copilot, AI Mode and Gemini, a content engine that publishes to your CMS, or visibility with coding agents for a developer tool.
Pick Proofsource if Claude matters to your buyers without a separate API key, or if you want a measured report on ChatGPT, Perplexity, Claude and Google AI Overviews before committing to a fixed monthly volume.
Choose Gauge if you want
- Volume at a low cost per answer
- Publishing built in
- Copilot and AI Mode in the plan
- Coding-agent visibility
Choose Proofsource if you want
- Claude without bringing a key
- Start smaller
- An interval on every percentage
Already using Gauge?
You do not have to choose on day one. Here is how teams run Proofsource beside Gauge and decide on their own data.
Keep Gauge running
Nothing about trying Proofsource needs you to stop Gauge. Your history and reports there stay where they are.
Bring your questions across
Export or copy the prompts you track in Gauge 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 Gauge: what buyers ask
What are the best alternatives to Peec AI for tracking prompt variations and AI answer coverage?
When we asked AI engines this, some answers named Gauge, which runs 600 prompts a day across six platforms on its Growth plan. Proofsource runs your buyer questions on ChatGPT, Perplexity, Claude and Google AI Overviews and shows which ones name you and who gets named instead. We have not verified Peec AI's plans here; check its own pricing page.
How much does Gauge cost?
Growth is $599 a month for 600 daily prompts, 18 articles and five seats. Enterprise is priced through a demo.
Does Gauge track Claude?
On Enterprise, or on any plan if you connect your own Anthropic API key. Proofsource tracks Claude on every plan, alongside ChatGPT, Perplexity and Google AI Overviews.
Is there a free trial of Gauge?
Yes, one week on Growth. Proofsource's trial: 200 answers. 25 Prompts/Question. Top AI engines. 2 days. Free. No card.
Where each fact about Gauge comes from
- Gauge pricing, read 5 Oct 2026.
- Gauge homepage and FAQ, read 5 Oct 2026.
Vendors change their pages. If a Gauge 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
