How AI Search Is Recommending PEO Services: Monthly Trends

Executive Summary

ADP TotalSource remains the benchmark's coverage leader in October 2026 at 44.9%, but the gap to second place has closed to 3.4 points over TriNet at 41.5%, the current second-place brand, with Justworks close behind at 41.2%. The category is stable at the top: no brand recorded a significant baseline-to-current movement, and the leader's position held across the full July-to-October series.

The sharpest movement this month was concentrated in four brands whose September-to-October coverage gains were large enough to stand out from normal month-to-month variation: ADP TotalSource (up 7.5 points to 44.9%), Insperity (up 7.1 points to 38.9%), Rippling PEO (up 7.0 points to 33.5%), and Paychex PEO (up 6.8 points to 27.8%). TriNet (up 6.9 points to 41.5%) and Justworks (up 5.6 points to 41.2%) also gained ground this month, though their moves remained within the range of normal variation for the series. TriNet's top-three recommendation rate climbed 12.9 points to 28.1% (99 of 352 qualified observations), and Justworks' rank-one recommendation rate rose 7.1 points to 15.9% (56 observations) — the highest rank-one rate among the top four brands other than ADP TotalSource, whose own rank-one rate fell 6.2 points to 17.3% even as its overall coverage held near its July level.

On the declining side, the movement was quieter. G&A Partners slipped 0.1 points from July to 3.4%, Vensure Employer Solutions fell 0.2 points month over month to 1.1%, and Justworks remained 2.0 points below its July baseline despite this month's gain. No brand was classified as a significant decliner across the series.

The October result sits within the four-month range established since July. The category leader's coverage is within 0.4 points of where it stood in July, and the top four brands are now clustered within 6.0 points of one another.

Each monthly run begins with 778 prompt-surface observations (513 unique questions) in October 2026 across the benchmark's defined AI/search surface universe. Of those, 778 mentioned a tracked brand or competitor; 732 were relevant and 46 were irrelevant. The public metrics use the 352 observations that survived both qualification stages. For comparison, the July 2026 baseline run began with 756 prompt-surface observations (434 unique questions); of those, 756 mentioned a tracked brand or competitor, 710 were relevant and 46 were irrelevant, and 400 observations survived both qualification stages.

Key Findings

AI Response Inconsistency Alerts

Questions This Section Answers

• Where did AI platforms conflict on PEO pricing and ownership details?
• Which AI platforms disagreed on Justworks, G&A Partners, Rippling PEO, and TriNet facts?

The benchmark detected 9 critical and high-severity factual inconsistencies across 6 AI platforms in this period: ChatGPT, Copilot, Gemini, Perplexity, AI Overviews, and AI Mode. Pricing and ownership questions produced the most frequent conflicts at the company level. Each conflict below is a comparison of one platform's answer against another's for the same question.

Justworks

AI platforms provided conflicting information about Justworks' PEO Plus monthly price. When asked "How much does Justworks cost?", Perplexity stated the price was around $109 per employee per month, citing Capterra, HireInSouth, and G2, while AI Overviews stated PEO Plus costs $124 per employee per month, citing the company's own pricing page, HireInSouth, and TinyTeam. The benchmark flagged the Justworks pricing page and a payroll comparison site as supporting the $124 figure, and the HireInSouth page as supporting the $109 figure.

Responses differed on the entry-level PEO plan price when asked "What is the difference between Paychex and Justworks?" AI Overviews stated the Plus plan starts around $99 per user per month, citing Gralio, a YouTube comparison, and Netchex, while ChatGPT stated PEO Basic is $79 and PEO Plus is $124 per employee per month, citing Paychex, the Justworks help center, and the Justworks pricing page. The Justworks pricing page was flagged as supporting the $124 figure.

When asked "Is Justworks worth it?", AI platforms diverged on the Basic tier price. AI Overviews stated the Basic plan starts at $59 per employee per month, citing a YouTube review, Business.com, and Capterra, while AI Mode stated PEO Basic runs around $79 per month per user, citing HR Stacks, Compareor, and Bolto. Source pages supporting the $79 figure included eLearning Industry, HireInSouth, and HR.software.

The same question produced a fourth conflict on the Plus tier. AI Overviews stated the Plus plan starts at $99 per employee per month, while AI Mode stated PEO Plus runs around $109 per month per user. The eLearning Industry and HireInSouth pages were flagged as supporting the $109 figure.

G&A Partners

AI platforms provided conflicting information about who co-founded G&A Partners beyond Tony Grijalva. When asked "Who owns G and A Partners?", Perplexity stated the founders are Tony Grijalva and Dean Andersen, citing Entrepreneur, Tracxn, and a General Atlantic page, while ChatGPT stated the company was founded by Antonio "Tony" Grijalva and John W. Allen, citing the company's About Us page and a 2018 fact sheet. The benchmark flagged the company's own anniversary press release and About Us page as supporting the John W. Allen answer, and Tracxn as supporting the Dean Andersen answer.

Responses differed on whether the company carries private equity backing. When asked "Who owns G and A Partners?", Perplexity stated G&A Partners is privately held with no mention of private equity ownership, while Gemini stated the company is primarily backed by TPG, which acquired a major investment stake in early 2024 from Riverside Strategic Capital, citing Paul Weiss and PEO Insider. LinkedIn was flagged as supporting the privately held characterization, while the Paul Weiss page was flagged as supporting the TPG answer.

Platforms also diverged on the size of the TPG stake. When asked "Who owns G&A Partners?", AI Mode stated TPG Capital acquired a major controlling stake in early 2024, citing the company's leadership transition press release, Nasdaq, and the company's TPG investment announcement, while ChatGPT stated the company is not owned outright by TPG or Riverside and is independently owned with management and employee ownership alongside institutional investors, citing the leadership transition press release. PrivSource and the company's own TPG announcement were flagged as supporting the TPG stake answer.

Rippling PEO

AI platforms provided conflicting information about Rippling PEO's IRS Certified PEO status. When asked "What is a good PEO?", Copilot stated the company is not IRS-certified, citing PEO Services, HR Stacks, and G2, while ChatGPT stated it is IRS-certified, citing Business.com, an ADP comparison page, and Business News Daily. The PEO Services page was flagged as supporting the not-certified answer, and the ADP comparison page as supporting the certified answer.

TriNet

AI platforms diverged on TriNet's PEO administrative fee range. When asked "How much does TriNet cost per month?", AI Overviews stated $100 to $300 per employee per month, citing Business.com, CheckThat, and SaaSworthy, while AI Mode stated $100 to $150 per employee per month, or $100 to $140 for bundled services, citing Business.com, Fit Small Business, and TriNet's own pricing page. The SaaSworthy page was flagged as supporting the higher $300 upper bound.

Benchmark Context

Questions This Section Answers

• How did the qualified observation set change from July to October, and why does it matter?
• Why can brand coverage rates rise even when the underlying recommendation counts are flat or lower?

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

The qualified set contracted from 400 observations in July to 352 in October, even as the raw collection of unique questions grew from 434 to 513. The August and September runs qualified 393 and 396 observations respectively. The larger raw collection reflects a broader question pool, but fewer prompts cleared both qualification stages in October. Because the qualified denominator fell from 400 to 352 across the series, brand-level coverage rates can rise even when the underlying count of valid recommendations is flat or lower; the brand sections below report raw counts alongside rates for that reason.

Benchmark-Level Metrics

Recommendation-shaped answers reached their highest share of the series in October at 46.0%, up from 29.0% in July and 30.3% in September. A larger share of qualified observations now present a recommendation rather than a factual or comparative answer.

AI Recommendation Trend

Questions This Section Answers

• Which PEO brands lead AI recommendation coverage in October 2026?
• How much did the top four brands' coverage converge?
• Did any brand move beyond normal variation across the July-to-October series?

Leadership Retained as the Top Four Converge

No brand moved beyond normal variation across the July-to-October series: all 10 were classified as stable on the baseline-to-current comparison. The category-level picture reflects a combination of smaller movements, with gains among TriNet, Insperity, and several niche brands partially offsetting Justworks' series decline.

What Changed This Month

Questions This Section Answers

• What changed in ADP TotalSource's rank-one placement despite holding the coverage lead?
• Which brands posted confirmed September-to-October coverage gains?
• What underlying signals accompanied Paychex PEO's and Rippling PEO's confirmed monthly gains?

ADP TotalSource: Coverage Holds, Rank-One Placement Erodes

ADP TotalSource's valid recommendation coverage was 44.9% in October, up 0.4 points from 44.5% in July and up 7.5 points from September. The September-to-October gain was one of four brand-level moves this month large enough to stand out from normal variation (alongside Insperity, Rippling PEO, and Paychex PEO); the baseline-to-current change itself remains within normal variation, and the leader held first place across all four tracked months.

The supporting placement picture is mixed. Raw mention presence declined 5.0 points to 68.5% across the series, and the top-three recommendation rate slipped 0.8 points to 34.7% (122 of 352 observations). The rank-one recommendation rate fell 6.2 points to 17.3% (61 observations), down from 23.5% in July.

The distinction to notice: ADP TotalSource remains the most frequently recommended brand in the category and is present in roughly two of every three answers, but it is winning the first recommendation less often than it did in July. This is a placement question inside a stable leadership position, not a visibility problem.

Highest-priority diagnostic: Which prompts shifted away from a rank-one answer to ADP TotalSource, and which brands moved into that slot?

TriNet: The Largest Supporting Move of the Series

TriNet's coverage rose 5.3 points from 36.2% in July to 41.5% in October, moving it from third to second place — the largest baseline-to-current coverage gain of any brand this period, though still within the series' normal variation. On the prior-month comparison, coverage climbed 6.9 points from September; that move, like Justworks' similarly sized gain, remained within the range of normal month-to-month variation, unlike the gains posted by ADP TotalSource, Insperity, Rippling PEO, and Paychex PEO this month. TriNet's top-three recommendation rate rose 12.9 points to 28.1% (99 of 352 observations), and raw mention presence rose 9.0 points to 69.0%.

Rank-one rate rose 1.2 points to 3.4% (12 observations), and net sentiment eased to 65.0% from 72.1%. The valid recommendation count was 146 observations in October, close to the 145 recorded in July.

The distinction to notice: TriNet's gains are concentrated in presence and top-three placement rather than first-place recommendations. The brand is now 0.3 points ahead of Justworks, having traded second and third place between them across the series. The improvement is broad rather than concentrated in any single placement tier.

Highest-priority diagnostic: Which prompt clusters and surfaces account for the top-three placement gain, and can that placement convert into rank-one wins?

Justworks: Rank-One Strength Offsets a Series Decline

Justworks' coverage was 41.2% in October, down 2.0 points from 43.2% in July but up 5.6 points from September — its largest single-month gain of the series, though, like TriNet's gain this month, it remained within normal variation rather than standing out as a confirmed monthly move. The series change places the brand in third place, 0.3 points behind TriNet.

The rank-one recommendation rate rose 7.1 points to 15.9% (56 observations) — the highest rank-one rate among the top four brands other than ADP TotalSource (17.3%). Raw mention presence slipped 3.4 points to 69.6% and the top-three rate rose 2.9 points to 28.7% (101 observations). The average recommended rank improved to 2.4 from 3.1.

The distinction to notice: Justworks is recommended slightly less often overall than in July but lands in the first position far more often. The brand trades a small amount of coverage for stronger placement.

Highest-priority diagnostic: Which surfaces produce the rank-one answers, and are they the same surfaces where coverage softened?

Insperity: Broad Gains Across Presence, Placement, and Rank-One

Insperity's coverage rose 4.9 points from 34.0% in July to 38.9% in October, in fourth place. The baseline-to-current change remains within normal variation, but the September-to-October move of 7.1 points was one of four brand-level gains that stood out from normal variation this month. Raw mention presence rose 11.4 points to 59.7% and the top-three rate rose 7.8 points to 25.6% (90 observations); the rank-one rate rose 4.8 points to 6.8% (24 observations).

The distinction to notice: Insperity posted a confirmed month-over-month gain on the primary coverage metric alongside broad-based increases in presence, top-three placement, and first-position answers. The brand is strengthening across the funnel of presence, placement, and first-position answers at once, which makes its coverage floor the more interesting number than its coverage ceiling.

Highest-priority diagnostic: Which prompts drove the rank-one gain from 2.0% to 6.8%, and which competitor lost that position?

Paychex PEO and Rippling PEO: Confirmed Monthly Gains, Mixed Underlying Signals

Paychex PEO's coverage rose 1.0 point from 26.8% in July to 27.8% in October, within normal variation for the series, but its September-to-October gain of 6.8 points stood out from normal month-to-month variation. The gain sits alongside a decline in supporting metrics: raw mention presence fell from 43.8% to 38.4%, the top-three rate fell from 12.8% to 8.5% (down 4.2 points), and the absolute number of valid recommendations fell from 107 in July to 98 in October even as the rate rose. The rank-one rate rose from 0% to 1.7% (6 observations).

Rippling PEO's coverage rose 1.5 points from 32.0% in July to 33.5% in October, also within normal variation, with a September-to-October gain of 7.0 points that also stood out from normal variation. Unlike Paychex, Rippling's presence rose from 45.5% to 49.2% and its top-three rate rose from 15.3% to 17.6%; its rank-one rate rose from 5.0% to 6.0% (21 observations). Its absolute valid recommendation count, like Paychex's, declined slightly (128 to 118) even as the rate rose, reflecting the shrinkage in the qualified observation pool from 400 to 352 across the series.

The distinction to notice: both brands posted confirmed month-over-month gains on the primary coverage metric, but the underlying counts show that part of each gain reflects a smaller qualified denominator rather than a larger number of actual recommendations. A rate increase built on a shrinking denominator is not the same signal as a rate increase built on more recommendations.

Highest-priority diagnostic: Whether Paychex PEO's and Rippling PEO's valid recommendation counts recover alongside the rate, or continue to decline as the denominator stabilizes.

The Niche Tier: Small Counts, Directional Signals

Engage PEO rose 0.8 points to 2.0% (7 valid recommendations), CoAdvantage rose 0.9 points to 1.7% (6 valid recommendations), G&A Partners slipped 0.1 points to 3.4% (12 valid recommendations), and Vensure Employer Solutions fell 0.2 points month over month to 1.1% (4 valid recommendations). None of these movements are significant.

The distinction to notice: These brands move on single-digit observation counts, where a change of one or two recommendations shifts the percentage by several tenths of a point. G&A Partners holds the highest coverage of the niche tier and is the only one with a rank-one recommendation in October (1 observation).

Highest-priority diagnostic: For each niche brand, whether the handful of recommendations cluster on specific prompt types or occur sporadically across the category.

Buyer-Intent Interpretation

Questions This Section Answers

• Which buyer-intent clusters did the benchmark qualify in October?
• What gap exists between the pricing questions buyers ask and the public PEO benchmark metrics?

In October 2026, all 352 qualified observations fell into the Brand Recommendation cluster. The benchmark did not qualify observations for Pricing and Value or Multi-Brand Comparison in any month of the series, so the public metrics cannot yet describe how AI systems discuss price, value, or direct head-to-head comparisons among PEO providers. This gap is notable given that the inconsistency data in this report shows pricing questions producing the most factual conflicts among the tracked brands: the public benchmark measures who is recommended, while the surfaces are being asked what things cost.

Brand Opportunity Summary

Questions This Section Answers

• What is the highest-priority diagnostic for each tracked PEO brand in October?
• Where do the leading and niche brands differ in their highest-priority response opportunities?

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 covering the 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: G&A Partners, Engage PEO, CoAdvantage, and Vensure Employer Solutions all move on single-digit valid recommendation counts, where one or two observations shift reported percentages by several tenths of a point. Absolute counts are named alongside percentages throughout.
• Qualified denominator vs raw collection: Brand-level percentages are calculated within the 400 qualified observations in July and the 352 in October, not the larger raw prompt collection of 756 and 778. This keeps the public metrics consistent across the surfaces that qualify.
• Directional analysis: Month-over-month movement identifies changes worth investigating but does not by itself establish the cause of those changes. The confirmed month-over-month coverage gains for ADP TotalSource, Insperity, Rippling PEO, and Paychex PEO, and the larger but unconfirmed gains for TriNet and Justworks, signal where to look, not why the change occurred.

Next Step

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

The aggregate percentages mask the questions that matter: which high-intent prompts are won, which competitor takes the recommendation when a brand loses, what attributes AI systems associate with each provider, and which external sources shape those answers. ADP TotalSource's rank-one erosion, TriNet's top-three surge, and Justworks' first-place strength are visible in the aggregate; the prompts and sources behind them are not.

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

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