How to evaluate AI SEO agencies: an evidence-led scorecard

A person comparing information on a phone and laptop

Updated 9 October 2026 · 5 minute read

The best agency pitch is not the one with the most AI logos. It is the one that makes the work, evidence and limitations easy to inspect.

When comparing AI SEO agencies, assess their technical process, editorial quality, measurement and delivery model. Ask for evidence linked to real buyer questions and commercial outcomes. No agency can reliably guarantee that an AI system will recommend your business on a fixed date.

The useful bits, at a glance

  • Ask for a defined scope, a reproducible baseline and inspectable evidence.
  • Check who does the work and how the agency reports commercial outcomes.
  • Reject guarantees of a fixed organic position in an AI answer.
In this guide
  1. Start with the buying decision
  2. Use an evidence-led shortlist
  3. Inspect a case study beyond the headline
  4. Ask how the agency tests AI visibility
  5. Read the proposed content
  6. Make the contract match the promise
  7. Three questions to put in your next agency call
  8. How Pieo fits into the comparison

Start with the buying decision

Tell the agency which service, market and customer type you want to grow. Share the constraints: budget, subject-expert availability, approval process and delivery capacity. A useful proposal responds to those specifics.

If every prospect receives the same package of articles, backlinks and screenshots, ask how the work changes for your situation. Standardised delivery can be efficient, but the diagnosis should still fit the business.

Use an evidence-led shortlist

AreaAsk to seeWatch for
Technical accessA sample issue, fix and verificationVague claims that a magic file unlocks AI
Content qualityA page with sources, expertise and a clear buyer purposeHigh-volume text with little original value
MeasurementSaved prompts, sources, conditions and CRM definitionsA score without its method
Commercial proofResults with scope, timeframe and attribution limitsTraffic presented as guaranteed revenue
DeliveryNamed responsibilities, approvals and handoverUnclear work ownership

Ask the same questions of every shortlisted agency. You will learn more from how they handle a limitation than from another confident prediction.

Pieo answer cards arranged on a green background

Inspect a case study beyond the headline

A credible case should tell you where the business started, what changed, when it changed and how the outcome was measured. If a result covers paid media, attribution and SEO together, do not interpret it as an SEO-only lift.

Look for the denominator. Ten leads from AI search means something different when there are 20 total leads than when there are 2,000. Look for the measurement window and whether the result refers to enquiries, qualified opportunities or customers.

An anonymised case can still be useful if the methods and limits are clear. It is weaker when every identifying detail and every measurement detail is missing.

Ask how the agency tests AI visibility

A single branded prompt can make almost any company appear visible. Ask for commercially relevant, non-branded questions, repeat observations and a record of the cited sources. Check whether the report distinguishes a mention of the business from a link to its own website.

Keep platforms separate unless the combined score has a transparent definition. Different tools and interfaces can expose different evidence. A proprietary score may help track a consistent sample, but it is not automatically a market-share measure.

Read the proposed content

Would a prospective buyer find it useful without knowing it was created for search? Does it answer a specific question, explain a decision and show real expertise? Can the writer identify what came from a source, what came from your team and what is an illustrative example?

Google’s people-first content guidance is a useful quality reference. Original information and practical value matter more than making an article longer for its own sake.

Make the contract match the promise

Agree access requirements, deliverables, approval responsibilities, reporting and ownership of the accounts and content. Ask what happens if your team cannot supply evidence or approvals on time.

A first month can establish a baseline and deliver agreed improvements. It cannot guarantee rankings, citations or a fixed number of customers. A pilot should help both sides assess the work and the relationship.

Three questions to put in your next agency call

  1. Show us one buyer question, the current evidence and the specific change you would make.
  2. Show us how a qualified enquiry becomes a reported customer in your measurement process.
  3. Tell us what you can commit to delivering in the first month and what you cannot control.

Clear answers should make the next decision easier. If the explanation becomes less concrete as you ask for detail, keep investigating before committing.

Buy a method you can inspect
  1. Evidence

    What can be verified?

  2. Delivery

    Who does the work?

  3. Economics

    What makes it worthwhile?

A practical framework from Pieo

How Pieo fits into the comparison

Pieo provides B2B SEO and GEO for service firms targeting the UK and US. Our pilot approach, measurement method and published results give you material to assess against the same questions. This guide is written by a provider, so use it to scrutinise our proposal as well as anyone else’s.

James Kevan, co-founder of Pieo

Meet Pieo’s co-founder

James Kevan

Co-founder of Pieo, with more than 15 years building and scaling businesses. James focuses on positioning, buyer behaviour and finding the growth opportunities that are specific to each client.

No two clients are the same. The work starts with understanding the business.