Enterprise SEO Marketing Agencies: AI Visibility Market Discovery Index

Benchmark Summary

WebFX leads the Enterprise SEO Marketing Agencies index in October 2026 with valid recommendation coverage of 71.9%. That figure sits slightly below the 73.8% recorded in the July 2026 baseline (down 1.9 points), a difference the data treats as within normal month-to-month variation rather than a change in standing. The next closest brand, Searchbloom, holds 46.0% valid recommendation coverage, a gap of 25.9 percentage points behind the leader.

No brand posted a significant coverage increase across the full baseline-to-current period. The most notable movement within the series belongs to WebFX, which rose to 71.9% in October 2026 from 66.1% in September 2026, a gain of 5.8 percentage points that reverses the prior month's decline.

The largest baseline-to-current decline belongs to First Page Sage, which fell to 25.6% in October 2026 from 43.7% in July 2026, a drop of 18.1 percentage points, declining in each of the three months since the baseline. Directive, iPullRank, and Seer Interactive also recorded significant declines over the same period.

The benchmark began with 800 prompt-surface observations in each month and produced 480 qualified observations in October 2026 after qualification.

Current Benchmark at a Glance

Qualified surface breadth counts the number of canonical AI surface families with at least one qualified observation: ChatGPT, Copilot, Gemini, Perplexity, AI Overviews, and AI Mode. The index recorded observations across all six families in both July and October 2026.

For the strategic interpretation of this benchmark, read CiteWorks Studio's analysis of How AI Search Is Recommending Enterprise SEO Marketing Agencies

Research Scope and Qualification

Brand-level percentages use the qualified observations as the public denominator, not the raw collection. AI Market Discovery Methodology

Current Brand Standings

Questions This Section Answers

• Which enterprise SEO agency ranks first on valid recommendation coverage, and how large is the lead?
• How do presence rate and rank-one rate differ across the tracked brands?
• Which agencies are clustered in the middle of the standings?

How to Read the Standings

• Presence rate: Share of qualified observations where the brand is mentioned in any form.
• Valid recommendation coverage: Share of qualified observations where the brand appears in a valid recommendation shortlist.
• Top-three rate: Share of qualified observations where the brand is recommended in the top three positions.
• Rank-one rate: Share of qualified observations where the brand is recommended first.
• Net sentiment: Positive minus negative sentiment across mentions, scaled from -1 to 1.

For formulas and denominator rules, see AI Market Discovery Metric Definitions.

Recommendation Coverage Movement

Questions This Section Answers

• Which enterprise SEO agencies gained or lost the most recommendation coverage since the July 2026 baseline?
• What accounts for WebFX's month-over-month coverage swing and its rising rank-one rate?
• How consistent was First Page Sage's decline across the three months since the baseline?

Current-Month Movement: WebFX

WebFX posted the only significant single-month coverage change in the index this period, rising to 71.9% in October 2026 from 66.1% in September 2026, a gain of 5.8 percentage points that reverses the prior month's decline. Measured against the July 2026 baseline, the brand's coverage sits slightly lower, at 71.9% versus 73.8%, a difference of 1.9 points that falls within normal month-to-month variation. Its rank-one rate stands at 38.1% in October 2026, up from 24.2% in July 2026.

Largest Decline: First Page Sage

First Page Sage recorded the largest baseline-to-current coverage decline in the October 2026 index, falling to 25.6% from 43.7% in July 2026, a drop of 18.1 percentage points. The brand declined in each of the three months since the baseline, including a 3.3-point move between September and October 2026. Its presence rate moved down to 27.7% in October 2026 from 48.2% in July 2026, and its top-three rate fell to 17.9% from 26.9% over the same period.

Category Leader: WebFX

WebFX remains the category leader with 71.9% valid recommendation coverage in October 2026, including a 5.8-point increase between September and October 2026 that reversed the prior month's decline. Measured against the July 2026 baseline, the brand's coverage is essentially flat (73.8% to 71.9%, within normal month-to-month variation). The brand's top-three rate of 55.6% and rank-one rate of 38.1% are the highest in the index; its rank-one rate rose to 38.1% in October 2026 from 24.2% in July 2026. Close coverage levels can still sit above different first-position rates.

Recommendation Placement Snapshot

Questions This Section Answers

• Which enterprise SEO agencies appear most often in the top three recommendations and in first position?
• Why can two brands with similar coverage still show very different rank-one rates?

Coverage shows how often a brand appears, but not how prominently. WebFX leads on placement as well, appearing in the top three in 55.6% of observations and first in 38.1% of observations in October 2026. Searchbloom's top-three rate of 29.6% and rank-one rate of 7.1% show a mid-pack placement profile. First Page Sage's top-three rate of 17.9% and rank-one rate of 6.7% remain in the top third of the index despite its coverage decline.

Close coverage levels can still hide different first-position rates. WebFX's rank-one rate rose to 38.1% in October 2026 from 24.2% in July 2026, even as its coverage moved down slightly over the same period.

Buyer-Intent Distribution

Questions This Section Answers

• What buyer-intent class do all qualified observations fall into, and what does that mean for the benchmark's scope?

All qualified observations in October 2026 fell into the Brand Recommendation class, consistent with July, August, and September 2026.

The current public series measures that class of discovery and does not yet contain qualified observations in the empty classes.

Historical Measurement Record

Questions This Section Answers

• Which brands have led recommendation coverage across every month of the record?
• Which months produced the largest single-brand coverage movements in the series?

Evidence and Source Layer

Questions This Section Answers

• What kind of evidence does the benchmark retain at the prompt level?
• How should citation and source presence be interpreted in relation to a brand being recommended?

The benchmark is built from prompt-level observations that retain the query, AI/search surface, answer, brand outcome, recommendation placement, sentiment, and where exposed, citations or attributable evidence sources. Source presence is evidence about the information environment. It is not automatically proof that the source caused the recommendation.

Scope Boundaries

This public benchmark does not measure:

• Market share or revenue attribution
• Actual sales or conversions from AI recommendations
• Every possible AI response to a given query
• Organic-search ranking positions
• Social media mention volume
• Private or sponsored AI channels
• Causality from a metric movement alone

Top 10 Cited Domains

Questions This Section Answers

• Which domains are cited most often across AI platform responses in October 2026?
• How distributed are citations across domains, and which tracked brand domains appear in the top ten?
• What types of sources dominate the upper ranks of cited references?

Across all AI platform responses in October 2026, the benchmark observed 6,558 citations drawn from 2,089 unique domains.

Citations are broadly distributed rather than concentrated: no single domain exceeds 5.0% share, and the top ten domains together account for a minority of all citations. Two tracked brands' own domains appear in the top ten, firstpagesage.com at rank five with 167 citations and webfx.com at rank eight with 106 citations, alongside searchbloom.com at rank ten. Aggregator and directory sources dominate the upper ranks, with clutch.co, goodfirms.co, and designrush.com together accounting for a meaningful share of cited references, while video and community platforms such as youtube.com and reddit.com also feature prominently.

About This Benchmark

The LLM Authority Index AI Market Discovery Index is a neutral, repeatable industry benchmark that tracks how often brands appear, are recommended, and are placed in AI-generated answers across six canonical AI/search surface families. New measurements are added to the same evergreen report each month.

• AI Market Discovery Methodology
• AI Market Discovery Metric Definitions
• AI Market Discovery Research Standards
• Modeled AI Authority Value

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