Petra Labs vs Promptwatch: Managed AEO Service or In-House Software?
Petra Labs runs AEO for you from $15,000 a month. Promptwatch gives your own team crawler logs, conversions and Content Agents from $95/mo. When each one makes sense in 2026.
Petra Labs and Promptwatch are not competing for the same budget line. Petra is a managed service with its own tracking software: a team builds your prompt set, does the content, PR and technical work, and models revenue impact. Promptwatch is software your own team runs. The real decision is whether you outsource the program or staff it.
Petra facts come from our catalog entry, read from petralabs.com on 14 October 2026. Promptwatch facts come from its published llms.txt, checked 15 October 2026.
Snapshot
| Petra Labs | Promptwatch | |
|---|---|---|
| What you buy | Software plus a team that does the work | Software |
| Entry price | $15,000/mo | Free Explore; Essential $95/mo |
| Typical spend | $250k to $600k+ a year | $245/mo Professional, $579/mo Business; agency $199 to $799/mo |
| Engines | "Every major AI platform", not named | ChatGPT, Gemini, Claude, Perplexity, Grok, Llama, DeepSeek, Mistral, Copilot, AI Overviews, AI Mode |
| Prompt set | Custom map per client | Your prompts, with volumes and difficulty |
| Hidden model steps | Chain-of-thought capture (fan-out searches, interim sources) | Query fan-outs |
| Attribution | Custom multi-touch and marketing mix models | Visitor analytics via script or GTM |
| AI crawler logs | Not published | Agent Analytics, from Professional |
| Content | Team writes copy, runs programmatic AEO | Content Agents publish to Webflow or Framer |
| Software on its own | No | Yes |
The case for Petra Labs
Petra says its experts "do 100% of the work." That covers platform setup, query selection and weighting, strategy, copywriting, technical audits, programmatic AEO, earned media placements and social. If you have no AEO staff and no plan to hire, that is the whole point.
The prompt map is built for you from forum scraping (Reddit, LinkedIn), opt-in panel and clickstream data, and Google search data. Petra runs each prompt many times until results settle, because model output varies run to run. The software reports visibility, average rank, citations, sentiment and how AI rates you against competitors on purchase criteria. It also captures what Petra calls chain-of-thought data: the searches a model runs and the sources it reads before answering, including sources that never appear in the final answer.
Attribution is the centrepiece. Petra builds a custom multi-touch and marketing mix model that tries to find AI-referred traffic hidden in direct, organic or dark social and tie it to pipeline and revenue. And credit where due: it publishes an entry price, which most managed firms do not.
Where Petra costs you
$15,000 a month is the floor. Typical engagements run $250k to $600k+ a year, scaled by brands tracked, query competitiveness and attribution complexity. You cannot buy the software alone. The engines are not named. The prompt set is custom, so you cannot benchmark Petra's numbers against an off-the-shelf tracker or carry them over if you leave. The Zapier case study and the 27x AI search traffic figure on the site are Petra's own claims, not audited by us.
The case for running it in-house on Promptwatch
Put the numbers side by side. Petra's entry month costs $15,000. Promptwatch Business costs $579 a month: 5 projects, 350 prompts, 42,000 responses, 10M visitor events, 100M crawler logs, 30 AEO articles and 5 seats. Two full years of Business at the monthly price is $13,896, still under one Petra month. On annual billing (twelve months for ten) it is $5,790 a year.
That gap does not account for people. Running AEO in-house means someone owns strategy, writes or edits content, and works on earned media. Salaries vary too much by market for us to quote one. Our point is narrower. The tooling cost is small, and Promptwatch is built to cut the hours.
Content Agents plan, write and publish GEO content to Webflow or Framer through a review inbox, using content gap analysis. Agent Chat lets the team question live data, and Unified Actions turns findings into a to-do list. Agent Analytics shows which AI crawlers fetched which pages and the path to a citation. Visitor analytics count AI-referred sessions and conversions without a bespoke model. Query fan-outs cover part of what Petra's chain-of-thought capture is after: the searches a model runs behind the answer.
One plan note: Essential at $95 has no listed crawler-log allowance. Agent Analytics starts on Professional at $245.
Where Petra wins
If the board wants an outside team accountable for results, and a marketing mix model built by specialists, Promptwatch does not offer that. Earned media placements and social management are services, not software features. Petra's run-until-stable sampling and hidden-source capture are also deeper research methods than anything Promptwatch documents.
Who should pick which
Pick Petra Labs if you are an enterprise with a six-figure AEO budget, no in-house team, and a need for custom revenue attribution.
Pick Promptwatch if you have even one person who can own AI search. You keep the data, the prompts and the content, and the self-serve software bill tops out at $579 a month on brand plans, or $799 on the largest agency tier.
Verdict
Petra Labs is a credible managed option at a price most teams will never need to pay to get started. For everyone else, Promptwatch is the better pick. Run the program yourself and measure crawl, citation and conversion in one place. Start on the free Explore plan.
FAQ
How much does Petra Labs cost?
From $15,000 a month, with typical engagements at $250k to $600k+ a year, per its Solutions page.
Can I buy Petra's software without the service?
No. The site sells the platform together with the team.
What does Promptwatch include for content?
Content Agents that plan, write and publish to Webflow or Framer with a review inbox. Essential, Professional and Business list 5, 15 and 30 AEO articles.