8 Best AEO Agencies for Professional Services Firms (2026)

The short answer

This list is for partners and marketing leads at accounting and CPA firms, management consulting and advisory firms, architecture, engineering and construction (AEC) firms, and other B2B professional services firms who want their firm named when a client asks ChatGPT, Gemini or Perplexity who to hire.

We run AEO Labs, and we are on this list, so read it as a list written by one of the agencies on it. We have put ourselves last. We have no professional services case study, and two of the agencies above us have worked with your kind of firm for years.

There is one finding the other lists for this search leave out. No agency here, us included, publishes a client-named AI search result for an accounting, consulting or engineering firm. The agencies publish legal results, results for their own website, unnamed counters and Google results. Ask every agency you talk to for a named firm in your segment, the prompt, the engine and the date. If they cannot, you are paying them to learn your segment, so make sure the price reflects that.

Who fits whom:

• Mid-size or large accounting, consulting or AEC firm that wants GEO inside a brand and research program: Hinge Marketing.
• CAS practice or fractional CFO firm that wants a published price and a short term: AEO Engine.
• Small CPA firm serving local businesses, on a tight budget, no contract: ThinkProfits.
• Architecture, engineering or construction firm: Siana Marketing.
• Consulting or engineering firm that wants long-form content, month to month: First Page Sage.
• PE-backed firm run on HubSpot that wants AI visibility tied to pipeline: Blend.
• UK firm in finance or professional services that wants GEO with PR and paid: Found.
• Firm that wants off-site citation work next to a specialist, or a 30-day sprint first: AEO Labs.

Law firms have their own list: see the best AEO agencies for law firms. For the wider field, see the main list of the best AEO agencies.

How we picked

We searched for the queries professional services buyers use ("aeo agency for accounting firms", "aeo agency for consulting firms", "professional services geo agency") and read the lists that rank for them. Then we went to each agency's own site. We did not use third-party lists as a source for any fact about an agency. Every fact below comes from the agency's own pages, fetched and checked on November 2, 2026. Where an agency does not publish something, we write "not published".

The lists ranking for this search today were written by agencies that put themselves first. Blend's list ranks Blend number one. AEO Engine's list for CPA firms ranks AEO Engine number one. Both are on our list too, and we say so in their sections. That pattern is common: in our own study of 450 AI answers to best-agency questions, 1,504 of 3,192 web citations (47.1%) pointed to an agency's self-published list of agencies. This page is one of those lists, so check us against the agencies' pages.

We kept agencies that had an AI search service and said something specific about professional services on their own site. Then we compared six things:

1. Firm-type fit. Does the agency say which kind of professional services firm it serves? Accounting, consulting and engineering firms are bought from by different people asking different questions.
2. Published price. Four of the seven outside agencies publish one.
3. Contract terms. Month to month, a 90-day term, or nothing published.
4. Named AI result. A client in your segment with an AI search number. Nobody has one, so we recorded what each agency shows instead.
5. Engines covered. Which AI engines the agency says it tracks.
6. Off-site work. Trade press, directories, associations, Reddit and the lists the engines cite.

The eight agencies at a glance

1. Hinge Marketing: best for mid-size and large accounting, consulting and AEC firms

What it is. Hinge Marketing started in 2002, when a branding firm, a design firm and a marketing firm came together in Chantilly, Virginia. By 2008 it had narrowed to professional services only, and it is now based in Arlington, Virginia. Its industry pages cover Accounting & Finance, AEC, Consulting, Government Contracting, Legal and Technology & SaaS, and it says it serves firms from startups to Fortune 100 market leaders. On accounting alone it says it has worked with over a hundred accounting and financial services firms.

What it does. Its GEO and SEO page describes a single visibility program that joins the two. It tracks your firm's brand mentions and citation frequency across ChatGPT, Gemini, Perplexity and Claude, and its page says that in accounting, AEC and consulting the focus shifts from search positions to AI share of voice. Off-site, it maps the domains that feed a model's picture of your industry and turns that into a plan for digital PR and co-marketing. For measurement it sets up intake processes that record which new business leads came from AI search engines, which suits firms where most work starts with a partner's phone call. In July 2026 it joined Brandi AI's agency partnership program for tracking.

Research. Hinge's pitch is research into how professional services buyers choose firms. Its GEO page says it has studied the marketing of professional services firms for almost twenty years. The size of that research base differs by page: the accounting page says roughly 50,000 firms and their buyers, more than 10,000 of them in accounting and financial services; the about page says over 60,000.

Timeline. It says most firms with a solid technical SEO foundation see measurable AI search visibility gains within four to six weeks of implementing its GEO recommendations.

Proof. No named AI search result. Its homepage reports that an unnamed consulting firm increased revenue 30 percent and an unnamed accounting firm increased leads 275 percent, but neither is an AI number.

Pricing and terms. Not published.

Limit. GEO is one service inside a branding and research firm, and there is no price, term or AI case study on the site. If you want a firm that already knows how your buyers choose an accountant or an engineer, Hinge has the longest record of that here; if you want a fixed monthly price, look further down.

2. AEO Engine: best for CAS practices and fractional CFO firms

What it is. AEO Engine is a managed AEO agency led by founder and CEO Vijay C. Jacob. It says it combines senior strategists, SEO specialists and 40+ AI agents. Its accounting page is written for a narrow buyer: CAS practices inside CPA firms, fractional CFO firms, advisory-led boutiques and multi-partner firms with a CAS line. AEO Engine also wrote one of the lists that ranks for this search, "Best AEO Agency for CPA Firms", and ranks itself first there.

What it does. Prompt tracking across ChatGPT, Google AI Overviews, Perplexity, Gemini, Claude and Copilot, the widest engine list here: up to 150 prompts on Growth and 300 on Scale. Off-site, its pricing page lists 3 to 5 brand mentions a month across Reddit, Quora, LinkedIn, YouTube and Facebook, plus PR campaigns; its accounting page adds trade press, local business press and association mentions that name the firm. Content is produced at volume, 30 to 60 articles a month.

Timeline and measurement. It says answer share and question coverage usually move within 60 to 90 days, and a shift in client mix follows across 4 to 6 months. It also says where its measurement stops: "We measure up to the point a prospect contacts you. Your pipeline carries it from there." That is an honest boundary, and worth knowing if you want AI attributed to fee income.

Proof. None in accounting, and AEO Engine says so on the page. Its accounting page shows legal results instead and labels them: "These are published results from legal, labeled as legal." ASK4SAM reached 12.7 percent AI share of voice, number two of 72, and My Rights Law 51 percent share of voice. Its homepage leads with an October 2026 Answer Index covering 100 law firms, so most of its published work is legal.

Pricing and terms. Public. Growth is $1,597 a month, Scale $2,997, and Enterprise from $10,000, scoped on a call. Growth and Scale start with a 90-day initial term, billed monthly. It also offers a guarantee: qualified Growth and Scale clients get 30 percent more organic plus AI search traffic in 90 days, or it keeps working at no management fee until they do. That is a traffic guarantee, not a promise about which firm an engine names.

Limit. No accounting case study yet, and its research and proof lean to law firms. Its two published plans include 30 and 60 articles a month, which may not fit a firm where every published word carries a partner's name. Ask who reviews technical tax and accounting content before it goes live.

3. ThinkProfits: best for small CPA firms that want a low price and no contract

What it is. ThinkProfits was founded in 1996 in Vancouver, BC, and says it has run search campaigns for over 3,500 businesses across Canada and the USA. It has an AI search page for accountants and CPAs. The agency describes its clients as companies generating $3M+ a year.

What it does. Monthly tracking of where you are cited across ChatGPT, Perplexity, Gemini, Google AI Mode and Bing Copilot. Off-site it works the sources it says accounting answers draw on: industry trade publications, Reddit threads in accounting subreddits, YouTube transcripts, Wikidata and niche directories. The Gold tier adds 1 to 2 placements a month across Reddit, directories, PR and editorial.

Regulated-profession content. This is the one agency here that addresses it on its page. It says it publishes under credentialed authors (CPA, CA, EA) with citations to CPA Canada, provincial and state CPA bodies and the AICPA.

Proof. No accounting result. Its about page lists case studies for dentists, plumbers, electricians, law firms, restaurants, eCommerce brands, hotels, manufacturers and B2B services.

Pricing and terms. The most detailed public pricing on this list. Bronze is $995 a month with a one-time setup fee of $1,680. Silver is $1,895 and Gold $3,495. Platinum is $4,995 with a $3,800 setup fee. Its accountants page says single-market firms usually fit Bronze or Silver, and multi-market, multi-service firms Gold or Platinum. Services are month to month, and the pricing page says "No long-term contracts. Cancel anytime."

Limit. ThinkProfits is a local-business generalist: its accountant page sits beside pages for plumbers and roofers. It fits a CPA firm that wins clients from small businesses nearby, not a consulting or engineering firm, and it has no accounting AI result to show you.

4. Siana Marketing: best for architecture, engineering and construction firms

What it is. Siana Marketing is a GEO agency for construction, architecture, home services, engineering and real estate companies. Its about page describes it as built exclusively for architecture, construction, design and home services firms. Daniela Pedroza, who holds an M.Arch from UC Berkeley, is founder and CEO. Three people are shown on the about page.

Disclosure. Siana's about page lists Evan Bailyn as a partner and says he is the founder and CEO of First Page Sage, which is number five on this list. If you get quotes from both, treat them as related.

What it does. An audit of how your firm appears across ChatGPT, Perplexity and Google AI Overviews (Gemini is named in its FAQ), then content creation, list placement, authority building, reputation optimization and database alignment. Its GEO page uses "Which engineering firm should I hire?" as an example prompt, which is the kind of question an AEC buyer asks. You receive a 12-month roadmap. It says most clients see initial visibility improvements within 90 days, with larger citation gains by month six. It also has a civil engineers page, though that one covers SEO as well as GEO.

Proof. A homepage counter says 102 ChatGPT citations were built from zero in 4 months. The client is not named. Another counter shows 93 percent client retention.

Pricing and terms. It says most clients invest $4,000 to $8,000 a month, with custom proposals. Contract terms are not published.

Limit. Most of Siana's work is construction, contractors and home services; engineering and architecture are a slice of it. The AI result has no client name, and the First Page Sage tie is worth knowing. For a larger AEC firm that also wants brand work, compare it with Hinge's AEC practice.

5. First Page Sage: best for consulting and engineering firms that want long-form content

What it is. First Page Sage is an SF Bay Area agency that says it has over 15 years of experience in SEO and AEO. It is a generalist. Its AEO page has no professional services wording, but it has separate SEO pages for consulting firms and engineering companies, and its industries list has a professional services group.

What it does. On the AEO page: structured data and schema, content creation, list and database outreach, and online reputation monitoring. It says it publicizes awards, accreditations, company size and usage statistics because those influence answer engine recommendations. The AEO page has guides for ChatGPT, SearchGPT and Perplexity but no list of tracked engines.

Consulting and engineering. Its consulting page says it has over 12 years of SEO work for consulting firms, with clients in operations, management, financial advisory and technology adoption, averaging $1.7M a year in new net revenue. Its engineering page reports an average of $1.6M a year. Both are SEO figures, not AI ones.

Proof. No AI result for a professional services client.

Pricing and terms. No price on the pages we checked. Its law firm GEO page says "Month to month, with no long-term commitments."

Limit. Its professional services pages describe SEO, not AI search, so ask how the AEO work would apply to your firm before assuming it does. No price. Its founder is also a partner at Siana Marketing. We found no agency here with an AI search offer written for staffing firms.

6. Blend: best for PE-backed firms run on HubSpot

What it is. Blend is a B2B agency with offices in Reading, UK and Cumming, Atlanta in the US. Its about page says most of its clients are PE-backed, and that it has been a HubSpot partner since 2015. Its AEO page says it has helped 300+ businesses grow, with no white-label subcontracting. Blend wrote the list that ranks first for this search, dated February 18, 2026, and ranks itself first there.

Professional services fit. Blend's AEO page and about page lead with PE-backed B2B and HubSpot. The professional services statement is on Blend's own list ("Our work spans B2B professional services, technology, and complex enterprise sectors"), and its case studies page has a Professional Services filter. The one professional services case there is a brand, website and growth project for an unnamed client: 35 percent more revenue and 63 percent more profit. It is not an AI search result.

What it does. Visibility work across ChatGPT, Perplexity, Claude and Google AI Mode. Prompt, position and citation tracking runs in Scrunch, and HubSpot reporting connects AI-sourced traffic to pipeline and revenue. Off-site, it builds entity and third-party mentions. Blend says it spent three months testing the framework on its own site first.

Proof. The AI numbers are for Blend's own website, not a client. Its AEO page reports a 250 percent increase in high-intent leads from AI sources and a 171 percent increase in citations linking to its site. Its list reports different figures for the same site: 103 percent more AI presence across 500+ prompts, 133 percent more AI-sourced MQLs and over $500k in pipeline from AI search within 90 days.

Pricing and terms. Published on its list: Essential AEO from £6,000 a month, covering strategy, technical foundations, AI-optimised content and measurement; Advanced from £11,000 a month. Terms are not published.

Limit. The highest published entry price on this list, and no client AI result. If your firm runs on HubSpot and your owners want AI tied to pipeline, the reporting is the reason to talk to Blend. If not, the price is hard to justify against the specialists above.

7. Found: best for UK firms in finance and professional services

What it is. Found is a London agency in Hatton Garden, part of Tomorrow Group. It started in 2005 as Artemis Eight and lists 90+ marketing experts. Its sector page is headed "Finance & Professional Services Marketing" and names PwC, Baringa and Digital Realty as clients. It says it has 15+ years in financial services.

What it does. A GEO SEO service tracked with its own Luminr platform, inside an agency that also runs digital PR, social and paid. The GEO page names Google SGE, Bing Chat and ChatGPT, which are older names for engines that have since changed.

Proof. No professional services AI result. The case on its GEO page is The Clermont, a hotel, and its figures are not AI-specific.

Pricing and terms. Not published.

Limit. The sector page is mostly about financial services, and the AI page has not been updated for the engines buyers use now. It fits a UK firm that wants GEO alongside PR and paid from one team, more than a firm that wants an AI specialist.

8. AEO Labs: best for off-site citation work next to a specialist, or a 30-day sprint first

What we are. A small specialist agency; AEO and the SEO underneath it are all we do. We have no professional services case study. Our client work covers DTC and ecommerce, B2B SaaS, healthcare and multi-location services.

What we do. We start with the questions buyers ask AI and run them across ChatGPT, Perplexity, Gemini and Google AI Overviews, logging whether you are cited, at what position, which competitors are cited, and the source URLs each engine pulled from. Most of the effort then goes off your site: listicle placement, digital PR and expert content on the domains the engines already trust. For a professional services firm, those domains are the rankings, directories, trade publications and "best firms" roundups a buyer's AI answer is built from. Our Reddit page says that work is a poor fit for some regulated categories, and we would tell an accounting firm on the first call if that applies.

Closest proof. InCorp, a business formation and compliance company that sells to businesses, is the nearest thing we have to professional services. Its non-branded organic traffic grew from about 2K to 22K in a year. That is a Google result, not an AI one. Our clearest AI result is in another category: ChatGPT ranked Try Create number one for "what is the best creatine gummy" in a logged-out US session on August 9, 2026, with the engine's share link on the case study. In B2B, Upsun was ChatGPT's number one for its primary prompt at the close of its 2025 engagement.

Pricing and terms. Not published. Every engagement starts with a 30-day sprint scoped to your firm, market and goals. It ends with a baseline, a plan and the first fixes shipped. From there the work continues as a retainer, or your own team takes the plan forward. More on the answer engine optimization page.

Where we are the wrong choice. If you want an agency that already knows how clients choose an accountant, a consultant or an engineer, start with Hinge Marketing, or Siana Marketing for AEC. If you are a CPA firm that wants credentialed authors and a published price, ThinkProfits and AEO Engine have both on their accounting pages. Where we can help is the off-site half: getting a firm onto the lists, directories and trade press the engines cite, next to whoever runs your site and content. Or a 30-day sprint that gives you a baseline and a plan before you sign a retainer with anyone.

Others we looked at

• Rattleback: a professional services specialist, but we found no AEO, GEO or AI search page on its site.
• Winsome Marketing: has written about GEO for accounting firms, but has no GEO service page, price or results.
• Edge Marketing: sells GEO and PR to companies that sell to accounting firms, not to the firms themselves. Worth a look if you are an accounting software vendor.
• Good2bSocial: works only with law firms, so it belongs on the law firms list.
• Gigde: has a professional services GEO page, but it gives no specifics, prices or results.
• Single Grain, Omniscient Digital, Grow and Convert: AEO services exist, but their own pages position them for B2B and SaaS, with no professional services statement.
• NP Digital and Passion Digital: both appear on Blend's list. We could not read the relevant pages on their sites, so we left them out.

What makes professional services AEO different

The buyer asks for a firm, not a product. "Best accounting firm for a dental practice", "which engineering firm should I hire for a hospital expansion", "top operations consulting firms for manufacturers". The engines answer those from rankings, directories, association pages, trade press and lists of firms, more than from your own site. That is why off-site work matters here as much as anywhere, and why an agency that only rewrites your service pages will not move the answer much.

Your people are the proof. Engines look for signs that a firm is credible: credentials, named partners, awards, accreditations, firm size. ThinkProfits publishes under CPA, CA and EA authors. First Page Sage says it publicizes awards and accreditations. Hinge builds on research about how buyers judge firms. Ask each agency how it will use the credentials you already have.

Professional rules still apply. Content an agency writes for your firm, or places elsewhere, is your firm's marketing. CPA firms have independence and advertising rules from their state board and the AICPA; engineers and architects have licensing boards. Only ThinkProfits mentions any of this on its page. Keep a partner in the approval loop and put that step in the contract.

Attribution is harder. Most professional services work starts with a call or a referral, not a form fill. Hinge sets up intake questions to capture AI-sourced leads. AEO Engine measures up to the point of contact and stops there. Blend connects AI traffic to pipeline in HubSpot. Decide which of those you need before you compare proposals.

What to ask before you sign

1. Can you show me a named firm in my segment with an AI search result, the prompt, the engine and the date? Nobody on this list publishes one. If an agency has one privately, it should be able to show it.
2. Which kind of firm do you work with most? CAS practice, small-business CPA, consulting, engineering, architecture. AEO Engine, ThinkProfits and Siana each answer this on their pages.
3. Who writes the content, and who checks technical accuracy? Ask whether a credentialed person reviews tax, audit or engineering claims, and whether your partners approve before anything is published.
4. Which prompts will you track, on which engines, and can I see the baseline first? AEO Engine lists six engines, ThinkProfits five, Hinge and Blend four each.
5. Where will you place us off-site? Ask for the specific directories, rankings, associations and trade publications, not a general promise of "authority".
6. How will you tell me which new clients came from AI? Intake questions, CRM attribution, or traffic only.
7. What happens if I stop? ThinkProfits and First Page Sage are month to month; AEO Engine starts with 90 days; the others do not publish terms.
8. If you are related to another agency on my shortlist, tell me. Siana and First Page Sage share a partner.

The full checklist, with strong and weak answers, is in how to choose an AEO agency. Larger firms and networks should also see the best enterprise AEO agencies.

Where to start

Write down 20 questions a client would ask before hiring a firm like yours: "best CPA firm for restaurants in Denver", "top structural engineering firms in Texas", "which consulting firms specialize in supply chain for mid-market manufacturers". Run them through ChatGPT, Gemini and Google this week. Note which firms get named, which sources are cited, and whether your firm appears at all. That is the core of an AEO audit, and you can do it yourself.

Then take that sheet to two or three of the agencies above and ask what they would change first. If you want the audit done with a competitor benchmark and a plan, that is our AI visibility audit. Or book a call with Aidan.