How AI Search Is Recommending PR Management Agencies: Monthly Trends

Executive Summary

The category re-concentrated at the top this month. Real Chemistry holds the highest valid recommendation coverage in the category at 36.1% in October 2026, with Burson close behind at 33.9%, a 2.2-point gap. Real Chemistry's coverage is up 5.3 points from 30.8% in July 2026, a move inside normal variation across the series, while Burson's climb from 20.1% in July 2026 is a 13.8-point rise that is significant and the largest cumulative gain in the category.

The largest single-month move came from Burson, whose coverage rose 25.6 points from 8.3% in September 2026 to 33.9% in October 2026, a significant move and the largest month-over-month change recorded in the series. Real Chemistry also moved sharply, up 23.8 points from 12.3% in September 2026 to 36.1% in October 2026, a significant move that returns it to the top of the field on coverage. 5WPR added a significant 9.5 points from 7.6% to 17.1% over the same two months.

FINN Partners is the sharpest decliner against the baseline. It fell 17.3 points from 34.8% in July 2026 to 17.5% in October 2026, a significant decline and the category's largest cumulative loss. It edged up 2.6 points from 14.9% in September 2026, a move inside normal variation. Ruder Finn is down 5.5 points across the series, and SparkPR down 1.1 points, both not significant.

Against the prior month, October reversed September's de-concentration. Three brands posted significant gains and only one held a significant decline against the baseline. The category now concentrates at the top around Real Chemistry and Burson while the middle of the field stays tightly packed.

Each monthly run begins with 633 prompt-surface observations (470 unique questions) in October 2026, down from 639 (473 unique questions) in September 2026 and up from 478 (339 unique questions) in July 2026, across the benchmark's defined AI/search surface universe. Of the October observations, 632 mentioned a tracked brand or competitor; 332 were relevant and 300 were irrelevant. The public metrics use the 280 observations that survive both qualification stages, compared with 279 qualified observations in July 2026, 278 in August 2026, and 276 in September 2026.

Key Findings

AI Response Inconsistency Alerts

Questions This Section Answers

• What factual inconsistencies did AI platforms produce about PR agencies this month?
• How did the same company name create conflicting answers across platforms?

The benchmark identified 3 critical or high-severity factual inconsistencies across 4 AI platforms in October 2026: ChatGPT, Copilot, Google AI Overviews, and Perplexity. All three were attributed to a single company name, and two of the three concern unrelated entities that share it.

Burson

When asked "Who is the biggest PR firm?", Copilot stated that Burson's 2025 fee income was $899M while Google AI Overviews stated it was approximately US$956 million. Both are high-severity pricing inconsistencies and cannot both be correct for the same period. Copilot cited PRovoke Media's Global Top 300 PR Agency Ranking 2026, a whosbest.org professional services ranking, and a Zippia listing of largest PR firms. Google AI Overviews cited PRovoke Media's 2025 Top 250 ranking and O'Dwyer's PR News & PR Firm Rankings.

When asked "What is the Burson Audio warranty like?", ChatGPT stated that the standard warranty is 2 years, extendable to 3 years with registration, while Perplexity stated that many Burson products are backed by a 5-year warranty. The flagged source behind the ChatGPT response, from the bursonaudio.com shop return and warranty policy, states that complete products that are not registered are covered for two years from the date of purchase, at 0.95 confidence. The flagged source behind the Perplexity response, an Audiophile Heaven review, states that the products carry a 5-year warranty, also at 0.95 confidence.

When asked "What are the top 10 PR agencies?", ChatGPT stated that Burson is a standalone agency ranked second globally with roughly $956M in fee income, while Copilot listed Burson Cohn & Wolfe (BCW) as a separate agency ranked sixth, distinct from Hill+Knowlton Strategies ranked fifth. The flagged source behind the Copilot response, a European Capitalist ranking of the most powerful PR agencies in the world for 2025, lists Hill+Knowlton Strategies at fifth and Burson Cohn & Wolfe at sixth, at 0.95 confidence.

The pattern is worth noting for the vertical as a whole: two of the three conflicts arise because AI platforms are merging or separating the same corporate name, and the conflicting responses draw on a mixture of current rankings, legacy rankings, and, in one case, an audio hardware brand that shares the Burson name.

Benchmark Context

Questions This Section Answers

• How many raw prompts were collected versus the qualified set used for brand percentages?
• What changed in the benchmark-level metrics between July and October 2026?

The report separates the raw collection universe from the qualified analysis set. Brand-level recommendation percentages are calculated within the qualified benchmark set.

August 2026 collected 585 prompts with 584 brand mentions and 321 relevant prompts, and September 2026 collected 639 prompts with 639 brand mentions and 329 relevant prompts. The qualified denominator has stayed nearly flat across the full series, between 276 and 280 observations, even as the raw collection grew by more than 150 prompts.

Benchmark-Level Metrics

The valid recommendation shortlist share recovered strongly in October 2026 after a three-month erosion. It stood at 59.1% in July 2026, 46.4% in August 2026, and 40.6% in September 2026 before rising to 74.6% in October 2026. That means a much larger share of qualified observations produced a usable recommendation shortlist this month, which is a meaningful part of why several brands posted gains.

AI Recommendation Trend

Questions This Section Answers

• Which PR agencies lead on recommendation coverage in October 2026, and by how much?
• Which brands posted significant movement against the baseline this month?

Re-Concentration at the Top After a Three-Month Spread

The September 2026 field was led by Highwire at 16.7% with Walker Sands 0.8 points behind. October 2026 replaces that compressed cluster with two clear leaders: Real Chemistry at 36.1% and Burson at 33.9%, 2.2 points apart, with Highwire a further 15.0 points back in third.

Two brands moved beyond normal month-to-month variation against the baseline over the full series: Burson and FINN Partners. 5WPR and WE Communications also cleared their significance thresholds, and the category-level re-concentration came from the combination of Burson's and Real Chemistry's October gains against FINN Partners' cumulative decline.

What Changed This Month

Questions This Section Answers

• Which PR agency recorded the largest single-month recommendation gain?
• Why did FINN Partners post the largest cumulative coverage decline?
• Which prompts drove the recommendation swings for the category's biggest movers?

Burson: A Significant Baseline-to-Current Gain

Burson holds 33.9% valid recommendation coverage in October 2026, up 13.8 points from 20.1% in July 2026, a significant gain. The sharper figure is the prior-month move: Burson rose 25.6 points from 8.3% in September 2026, the largest single-month move any brand recorded in the four-month series.

Burson recorded 95 valid recommendations out of 280 qualified observations in October 2026, up from 23 in September and 56 in July. Its top-three recommendation rate climbed to 26.4% from 16.9% in July, and its rank-one rate edged from 0.0% to 0.7%. Raw mention presence was 56.8%, the highest in the category for the fourth consecutive month.

The distinction is that Burson's presence barely changed while its coverage rose sharply this month. The brand was already the most-mentioned agency; October is the first month in which that presence converted into a comparable share of recommendations. Net sentiment eased to 0.6 from 0.7 in July, which is the one signal moving the other way.

Highest-priority diagnostic: Which prompts began recommending Burson in October that previously mentioned it without a recommendation, and which agency held those recommendations before?

Real Chemistry: Largest Coverage Rate in the Category

Real Chemistry leads the field at 36.1% valid recommendation coverage in October 2026, up 5.3 points from 30.8% in July 2026, a move inside normal variation across the series. The month-over-month story is far sharper: coverage rose 23.8 points from 12.3% in September 2026, a significant move.

Real Chemistry recorded 101 valid recommendations in October 2026, up from 34 in September and 86 in July. Its rank-one rate held at 5.4%, unchanged from July and the highest in the category. Its top-three rate eased from 14.3% to 12.1%. Raw mention presence was 42.1%.

The distinction is that Real Chemistry holds its rank-one position while its overall coverage swings sharply. It is consistently named first more often than any other agency, but the breadth of prompts where it appears at all moves month to month. The 2.2-point gap to Burson means the leadership is real but not settled.

Highest-priority diagnostic: Which high-intent prompts put Real Chemistry first, and did September's dip and October's recovery occur on the same prompts or different ones?

FINN Partners: Largest Cumulative Decline in the Category

FINN Partners sits at 17.5% valid recommendation coverage in October 2026, down 17.3 points from 34.8% in July 2026, a significant decline and the largest cumulative loss in the category. It edged up 2.6 points from 14.9% in September 2026, a move inside normal variation.

The brand recorded 49 valid recommendations in October 2026, down from 97 in July. Its raw mention presence rate fell from 45.2% in July to 18.2% in October, a 27.0-point decline. Top-three rate fell from 12.2% to 7.1%. Net sentiment improved to 1.0 from 0.9.

The distinction is that FINN Partners lost presence and coverage together, then stabilized in October. Its top-three rate within valid recommendations held at 7.1%, meaning the brand still places well when it appears; it simply appears far less often. It now sits in fourth, 3.6 points behind Highwire and 18.6 points behind the leader.

Highest-priority diagnostic: Which surfaces or prompt types account for the 27.0-point presence decline, and did the loss concentrate on specific AI platforms?

5WPR: A Significant Second Gain

5WPR holds 17.1% valid recommendation coverage in October 2026, up 17.1 points from 0.0% in July 2026, a significant gain. It rose 9.5 points from 7.6% in September 2026, also significant, a second significant move since entering the tracked set in August.

The brand recorded 48 valid recommendations in October 2026, up from 21 in September and 37 in August. Its top-three rate rose to 7.1% from 3.3%. Rank-one rate was 2.1%. Raw mention presence was 20.4%. Net sentiment eased to 0.8 from 1.0.

The distinction is that 5WPR now converts a modest presence rate into a top-five coverage position, ahead of Ruder Finn and PAN Communications. The 20.4% presence rate is among the stronger presence rates in the category, and the 17.1% coverage rate places it fifth.

Highest-priority diagnostic: Whether the August-through-October gains rest on the same prompt set or on a widening base, and whether the 2.1% rank-one rate is holding the coverage ceiling in place.

WE Communications: Small-Count Rise Above the Threshold

WE Communications holds 4.3% valid recommendation coverage in October 2026, up 3.6 points from 0.7% in July 2026, a significant gain. It rose 3.9 points from 0.4% in September 2026, also significant.

The brand recorded 12 valid recommendations in October 2026, up from 1 in September and 2 in July. Its top-three rate rose to 3.6% from 0.4% in July, and its rank-one rate to 2.1% from 0.0%. Raw mention presence rose from 1.1% to 4.3%.

The distinction is that a small absolute count, 12 valid recommendations, moved the percentage well beyond the significance threshold. The rise is real in the data but rests on a narrow base, and it should be read alongside the count rather than the rate alone.

Highest-priority diagnostic: Which of the 12 valid recommendations cluster on a single surface or prompt, and whether the pattern holds with a wider count.

Highwire and Ruder Finn: The Steady Middle

Highwire holds 21.1% valid recommendation coverage in October 2026, down 0.4 points from 21.5% in July 2026, a flat result that keeps it in third. Its top-three rate rose from 2.1% to 7.1%, even as coverage held. It recorded 59 valid recommendations, little changed from 60 in July.

Ruder Finn holds 11.4% valid recommendation coverage in October 2026, down 5.5 points from 16.9% in July 2026, not significant across the series but up 6.3 points from 5.1% in September 2026, a significant month-over-month gain. Its raw mention presence fell from 25.8% to 12.5% across the series, while valid recommendations rose to 32 from 14 in September.

The distinction for both brands is that placement is improving faster than presence. Highwire added 5.0 points to its top-three rate on flat coverage; Ruder Finn's valid recommendation count rose from 14 in September to 32 in October while its presence rate fell from 25.8% in July to 12.5% in October.

Highest-priority diagnostic: Which prompts convert presence into top-three placement for Highwire, and which prompts recovered for Ruder Finn in October without a matching presence recovery.

Stabilization and the Notable Gaps

The brands classified as stable include Allison Worldwide at 0.4%, PAN Communications at 14.6%, SparkPR at 0.7%, and Walker Sands at 19.3%. PAN Communications has now risen 4.2 points from July 2026 across two consecutive months of gain, and Walker Sands 1.7 points, returning to fifth alongside 5WPR.

The benchmark flags three widening gaps worth a category-level note. The gap between 5WPR and FINN Partners has moved 34.4 points in 5WPR's favor and widened every month of the series, from a position where FINN Partners led by 34.8 points in July 2026 to one where FINN Partners leads by just 0.4 points in October 2026. The gap between Burson and FINN Partners has moved 31.1 points in Burson's favor, also widening every month. The gap between 5WPR and Ruder Finn moved 22.6 points in 5WPR's favor. These are repositioning observations about the shape of the category, not a read on any single brand's prospects.

Highest-priority diagnostic: Whether the persistent widening on the 5WPR and Burson side of these pairs reflects the same prompt set moving, or parallel losses and gains on unrelated prompts.

Buyer-Intent Interpretation

Questions This Section Answers

• Which buyer-intent clusters did the benchmark actually capture?
• What questions about pricing and head-to-head comparisons can't the benchmark answer yet?

All 280 qualified observations in October 2026 fell into the Brand Recommendation class, as they did in July, August, and September 2026. The comparison and pricing clusters recorded zero observations, though the raw response mix included 4 comparison analyses and no pricing analyses this month.

The public benchmark therefore measures which agency AI systems recommend for general PR management needs. It cannot yet answer how AI systems compare agencies head-to-head, nor how they assess pricing and value. Both of those questions drove real search results this month, as the inconsistency alerts above show, but they remain outside the qualified measurement scope.

Brand Opportunity Summary

Questions This Section Answers

• Which PR agencies have the strongest coverage positions, and where are the biggest gaps?
• What diagnostic question should each brand investigate next?

The benchmark identifies where attention is warranted; a company-level analysis is needed to explain why.

Evidence Behind the Benchmark

The aggregate metrics are built from prompt-level observations (query, surface, recommendation outcome, rank, sentiment, and citations where exposed). Company-level analysis can go deeper into prompt, competitor, surface, and evidence patterns. Source presence is not automatically treated as proof of causation.

About This Benchmark

This report is part of the LLM Authority Index AI Visibility Market Discovery research program.

• AI Visibility Industry Market Methodology
• AI Visibility Industry Market Metrics
• AI Visibility Industry Market Standards

Report-Specific Interpretation Notes

• Small-count movement: brands with fewer than 5 valid recommendations (Allison Worldwide, SparkPR) show movement that is more sensitive to individual observations. WE Communications at 12 valid recommendations sits close to that boundary and should be read with the count beside the rate.
• Qualified denominator vs raw collection: the 280 qualified observations in October 2026 are a subset of 633 collected prompts after relevance and eligibility filtering.
• Directional analysis: significant month-over-month movement identifies changes worth investigating; it does not by itself establish the cause of those changes.

Next Step

The Public Benchmark Shows Where a Brand Is Winning or Losing. A Company-Level Audit Shows Why.

The aggregate percentages in this report raise questions the benchmark alone cannot answer: which high-intent prompts a brand wins outright, which competitor takes the recommendation when it loses, what attributes AI systems associate with each agency, and which external sources shape those answers. For Real Chemistry and Burson holding a 2.2-point separation at the top, the question is which prompts hold the lead and which are shifting. For FINN Partners after a 27.0-point presence decline, the question is where the presence went.

A company-specific AI visibility audit maps those prompt, surface, competitor, ranking, sentiment, and evidence-source patterns into a prioritized visibility strategy. The public benchmark shows the scoreboard; the audit explains the game.

Request an AI visibility audit