Proofsource vs Sona
Sona answers how much pipeline AI answers bring in. Proofsource answers which buyer questions name you, who gets named instead and what to fix first. Different questions, and they can sit side by side.
Proofsource and Sona in five facts
Price
- Proofsource
- Free trial, then Custom from $64 per brand per month (final price discussed on demo call)
- Sona
- AI Visibility plans (Starter, Growth, Enterprise) not priced on the page; Marketing Measurement Growth is $599/mo billed annually[1]
Free trial
- Proofsource
- 2 days free, 4 engines, no card
- Sona
- 14-day free trial on every plan, no credit card[1]
AI engines covered
- Proofsource
- 4 on the trial, all 10 on Custom
- Sona
- Standard models ChatGPT, Gemini, Google AI Mode, AI Overviews and Perplexity; premium models use more credits[1]
How often answers are re-read
- Proofsource
- Daily on Custom, or hourly
- Sona
- Daily, across your selected engines and regions[1]
Seats
- Proofsource
- Unlimited on Custom
- Sona
- Unlimited seats on every plan, with API and MCP access[1]
What Sona is, and who it is for
Measurement for B2B revenue teams. Sona is a marketing measurement platform. Its AI Visibility product tracks prompts, citations and competitors; Marketing Measurement resolves anonymous visitors, stitches buyer journeys and credits each touch, AI answers included, against revenue.[1][2]
Priced by credits. On standard models one credit is one AI answer analysed. Starter includes 10,000 or 15,000 credits a month, Growth 35,000 or 50,000, and Enterprise is unlimited.[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 Sona, fact by fact
Each Sona cell links to the page it came from. Where Sona does not publish a detail, the cell says so instead of guessing.
| Question | Proofsource | Sona |
|---|---|---|
| Price | Free trial, then Custom from $64 per brand per month (final price discussed on demo call), arranged on a demo call | AI Visibility plans (Starter, Growth, Enterprise) not priced on the page; Marketing Measurement Growth is $599/mo billed annually[1] |
| Free trial | 200 answers. 25 Prompts/Question. Top AI engines. 2 days. Free. No card, no sales call | 14-day free trial on every plan, 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 |    Google AI Mode Standard models ChatGPT, Gemini, Google AI Mode, AI Overviews and Perplexity; premium models use more credits[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, across your selected engines and regions[1] |
| Seats | Unlimited seats on Custom, with client workspaces, scoped members, Client Viewer seats and SSO set up at onboarding | Unlimited seats on every plan, with API and MCP access[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 | Attribution from AI answers to pipeline, with identity resolution and multi-touch credit; drafted fixes are not described[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 Sona shines
- Revenue attribution. Sona connects AI-referred visits and citations to accounts, pipeline and closed deals, which is a step beyond what a visibility tool on its own covers.[2]
- Open access on every plan. Unlimited seats, API and MCP access come with every plan, after a 14-day trial with no card.[1]
- Gemini and Google AI Mode as standard. Both are among Sona's standard models, at one credit per answer.[1]
Where Proofsource shines
- Claude in the panel. Claude is on every Proofsource plan. It is not among the standard models on Sona's pricing page.[1]
- An interval on every visibility number. Proofsource asks every question on every engine on a fixed schedule, publishes a 95% Wilson interval, and holds alerts until a change clears it.
- From gap to draft. Each gap names the pages the engine cited instead of you, with a draft fix held for your approval. Sona's pages describe measurement and attribution rather than drafted fixes.[2]
- A starting price on the page. Custom from $64 per brand per month (final price discussed on demo call). Sona does not list its AI Visibility prices.[1]
Proofsource or Sona: the fair verdict
Choose Sona if the board question is how much pipeline AI answers produce, and you want that in the same system as the rest of your attribution.
Choose Proofsource if the question is which buyer questions name you, who gets named instead and what to fix first.
Choose Sona if you want
- Revenue attribution
- Open access on every plan
- Gemini and Google AI Mode as standard
Choose Proofsource if you want
- Claude in the panel
- An interval on every visibility number
- From gap to draft
- A starting price on the page
Already using Sona?
You do not have to choose on day one. Here is how teams run Proofsource beside Sona and decide on their own data.
Keep Sona running
Nothing about trying Proofsource needs you to stop Sona. Your history and reports there stay where they are.
Bring your questions across
Export or copy the prompts you track in Sona 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 Sona: what buyers ask
Which AI visibility tools run scans every day rather than weekly, and what do they cost per brand?
Proofsource re-reads every question daily; Custom from $64 per brand per month (final price discussed on demo call). Sona runs tracked prompts daily on a credit system; its AI Visibility plan prices are not on its pricing page.
Does Sona connect AI search visibility to revenue?
Yes, by its own description: Marketing Measurement resolves visitors to accounts and credits AI answers alongside other channels against pipeline and revenue.
Does Sona track Claude?
Sona's pricing page lists ChatGPT, Gemini, Google AI Mode, AI Overviews and Perplexity as standard models and says premium models use credits at a higher rate, without naming them.
Is there a free trial of Proofsource?
Yes. 200 answers. 25 Prompts/Question. Top AI engines. 2 days. Free. No card, no sales call. After that, Custom from $64 per brand per month (final price discussed on demo call).
Where each fact about Sona comes from
- Sona pricing and pricing FAQ, read 5 Oct 2026.
- Sona homepage, read 5 Oct 2026.
Vendors change their pages. If a Sona 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
