How AI Search Is Recommending Staffing Agencies: Monthly Trends

Executive Summary

Robert Half holds the category lead in valid recommendation coverage in October 2026 at 54.1%, a lead of 6.4 points over Randstad at 47.7%. Both brands sit well above the rest of the field. Both posted significant gains from September to October (Robert Half up 6.9 points, Randstad up 7.0 points), though each remains within normal month-to-month variation — the leadership position is retained and stable rather than newly established.

Adecco recorded the strongest upward move from the prior month, rising to 44.6% in October 2026 from 36.6% in September 2026, a gain of 8.0 points. Randstad and Robert Half each also moved up significantly from September 2026. Among baseline movers, Express Employment Professionals reached 34.0% coverage, up 8.1 points from the July 2026 baseline, and PrideStaff reached 10.0% coverage, up 4.2 points from baseline; both are classified as significant risers.

AppleOne Employment Services and Spherion were the sharpest decliners measured against the July 2026 baseline, down 2.7 points and 4.1 points respectively, both classified as significant decliners. Both operate on very small absolute counts, with 3 and 31 valid recommendations in October 2026.

Against the prior month, the category was mixed rather than broadly directional. Four brands crossed the threshold for a significant month-over-month gain — Adecco, Kelly Services, Randstad, and Robert Half — while the rest held within normal variation. The month is best described as a partial recovery of July positioning for the top of the field, not a category-wide shift.

Each monthly run begins with 800 prompt-surface observations (542 unique questions) across the benchmark's defined AI/search surface universe in October 2026, compared with 772 prompt-surface observations (496 unique questions) in July 2026. Of those, 800 mentioned a tracked brand or competitor in October 2026, versus 772 in July 2026; 747 were relevant and 53 were irrelevant in October 2026, versus 608 relevant and 164 irrelevant in July 2026. The public metrics use the 579 qualified observations in October 2026 and the 498 qualified observations in July 2026 that survive both qualification stages. August 2026 and September 2026 sit between those two months as intermediate points in the series.

Key Findings

AI Response Inconsistency Alerts

Questions This Section Answers

• Where did AI platforms give conflicting answers about staffing agency rankings?
• What factual conflicts emerged around Randstad's size and revenue?
• Which companies were involved in the highest-severity AI inconsistencies?

The benchmark detected 3 critical or high-severity factual inconsistencies across 3 AI platforms. Each conflict involves a claim that cannot be simultaneously true, and each carries a confidence score of 0.9 or higher. The conflicts cluster around two companies: Randstad and ManpowerGroup.

Randstad

AI platforms provided conflicting information about which company is the largest IT staffing company in the world. When asked what the largest IT staffing company in the world is, Copilot stated that Randstad is the largest IT staffing company in the world, while Gemini stated that TEKsystems holds that position. Both responses drew on overlapping industry ranking sources, including a Staffing Industry Analysts list of the world's largest IT staffing firms that appeared in both sets of citations. The conflict is graded critical severity with a confidence of 0.95.

Responses also differed on Randstad's 2025 global revenue. When asked what the world's largest staffing agency is, ChatGPT stated that Randstad 2025 revenue was about 23.1 billion euros, citing the company's investor relations page, while Copilot stated that Randstad global revenue exceeds 26 to 27 billion dollars. The discrepancy is notable because 23.1 billion euros converts to roughly 25 billion dollars, not the higher range Copilot reported. Flagged sources include the Randstad investor relations page, which supports the lower figure, and two third-party ranking pages that carry the higher figure. The conflict is graded high severity with a confidence of 0.9.

ManpowerGroup

AI platforms provided conflicting information about the top-ranked temporary staffing firm. When asked what the most popular temp agency is, ChatGPT stated that Forbes' 2026 ranking named Manpower No. 1 among America's Best Temporary Staffing Firms, citing ManpowerGroup's own investor relations page. Copilot stated that Randstad North America is the most popular temp agency in the U.S. right now, with ManpowerGroup ranked second, citing the Forbes 2026 list alongside two third-party comparison pages. Both answers reference a 2026 Forbes ranking while placing a different company first. The conflict is graded high severity with a confidence of 0.9.

Benchmark Context

Questions This Section Answers

• How does the qualified benchmark set differ from the raw prompt collection?
• What changed in recommendation-shaped answer share and shortlist share 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 and September 2026 sat between these months as intermediate points, with 547 and 587 qualified observations respectively. Qualified observation counts rose through September and settled slightly lower in October 2026, though the raw collection universe was identical at 800 prompts in September and October.

Benchmark-Level Metrics

September 2026 recorded a recommendation-shaped answer share of 38.0% and a valid recommendation shortlist share of 64.7%. October's jump to 61.8% and 81.7% respectively is the largest single-month change in answer composition across the four-month series, and it coincides with a much smaller count of factual answers and ranked lists.

AI Recommendation Trend

Questions This Section Answers

• Which staffing agencies lead the category in valid recommendation coverage as of October 2026?
• Which brands moved significantly against the July 2026 baseline?

Top tier separates as mid-field brands close

The staffing agencies category shows a clear two-brand top tier in October 2026. Robert Half leads at 54.1% valid recommendation coverage, up 3.5 points from July 2026, and Randstad sits second at 47.7%, up 4.5 points over the same period. The gap to third place is 3.1 points, and the combined top-two share is the highest of the four months.

Two brands exceeded normal month-to-month variation against the July 2026 baseline in a meaningful direction: Express Employment Professionals and PrideStaff both moved up significantly, while AppleOne Employment Services and Spherion moved down significantly. The remaining movements were either not significant or consistent with ordinary variation.

What Changed This Month

Questions This Section Answers

• Why did Adecco's coverage jump while its overall presence stayed flat?
• Which prompt segments drove Express Employment Professionals' significant rise?
• Why did AppleOne Employment Services and Spherion decline even as one improved placement quality?

Robert Half: Leader extends while rank-one strength grows

Robert Half's valid recommendation coverage reached 54.1% in October 2026, up 3.5 points from the July 2026 baseline of 50.6% and up 6.9 points from September 2026. The brand was present in 371 of 579 qualified observations in October 2026, versus 353 of 498 in July 2026.

Rank-one placements reached 17.1% in October 2026, up from 13.9% in July 2026, with 99 rank-one recommendations recorded. Top-three recommendations stood at 27.3%, up 2.2 points from the baseline. Robert Half recorded 313 valid recommendations in October 2026, the highest count of any tracked brand.

The distinction worth noting is the direction of the two underlying signals. Robert Half's raw presence rate fell 6.8 points against July 2026, a notable decline, even as its valid recommendation coverage rose. The brand appears in fewer qualified observations than it did in July, but when it appears it is recommended more often and in stronger positions.

Highest-priority diagnostic: Which prompt types account for Robert Half's decline in raw presence while its recommendation rate rises, and whether rank-one strength is concentrated in a narrower set of surfaces.

Adecco: Sharpest month-over-month gain while presence holds flat

Adecco's valid recommendation coverage reached 44.6% in October 2026, up 8.0 points from 36.6% in September 2026. Measured against the July 2026 baseline of 43.6%, the brand is up 1.0 point, a movement that does not exceed normal variation across the full series. Adecco was present in 336 of 579 qualified observations in October 2026, versus 308 of 498 in July 2026.

Top-three recommendations reached 24.2% in October 2026, up 2.3 points from the 21.9% baseline. Rank-one recommendations stood at 4.7%, down 1.1 points from July 2026. The brand recorded 258 valid recommendations in October 2026, the third-highest count among tracked brands, behind Robert Half (313) and Randstad (276).

Adecco's coverage gain this month came alongside an essentially flat presence rate, which sat at 58.0% in October 2026 versus 61.9% in July 2026. The brand is being recommended more often within the observations where it appears, rather than appearing in more observations overall.

Highest-priority diagnostic: Whether Adecco's coverage recovery is concentrated in mid-rank placements rather than rank-one, and which competitors hold the rank-one positions it lost since July.

Express Employment Professionals: The category's clearest significant riser

Express Employment Professionals reached 34.0% valid recommendation coverage in October 2026, up 8.1 points from the July 2026 baseline of 25.9%, a significant increase. The brand recorded 197 valid recommendations in October 2026, up from 129 in July 2026, and was present in 206 of 579 qualified observations.

Top-three recommendations rose to 17.3% in October 2026 from 4.8% in July 2026, a gain of 12.5 points. Rank-one recommendations reached 6.9% from 1.2%, a gain of 5.7 points. The brand recorded 40 rank-one placements in October 2026, up from 6 in July 2026.

The movement here is both broader and deeper than most of the category's shifts. Express Employment Professionals improved presence, top-three frequency, and rank-one frequency simultaneously, with the top-three gain the largest placement change of any brand in the comparison.

Highest-priority diagnostic: Which prompt segments drove the 12.5-point top-three gain, and whether those segments overlap with Adecco's coverage base.

Insight Global and ManpowerGroup: Mid-field gains without significance flags

Insight Global reached 36.6% coverage in October 2026, up 4.9 points from 31.7% in July 2026, though this movement did not cross the significance threshold. Its top-three rate rose to 16.4% from 10.4%, a gain of 6.0 points, and it recorded 95 top-three placements in October 2026 versus 52 in July 2026. The brand's presence rate was essentially unchanged at 42.3% versus 42.2%.

ManpowerGroup reached 26.8% coverage in October 2026, up 3.1 points from 23.7% in July 2026. Its top-three rate rose 3.3 points to 12.3%, and its presence rate rose 3.2 points to 37.5%. Both movements sit below the significance threshold.

Both brands improved their placement quality more than their raw footprint. The distinction matters for readers tracking whether visibility gains are translating into actual recommendation positions, since neither brand appeared in materially more observations than it did in July.

Highest-priority diagnostic: Whether the top-three gains for Insight Global and ManpowerGroup come from the same prompt categories, and whether those categories carry different commercial weight.

AppleOne Employment Services and Spherion: Significant baseline decliners on small counts

AppleOne Employment Services fell to 0.5% coverage in October 2026 from 3.2% in July 2026, down 2.7 points and classified as a significant decliner. The brand recorded 3 valid recommendations in October 2026 and was present in 3 of 579 qualified observations. Its raw presence rate fell 3.3 points as well.

Spherion fell to 5.3% coverage in October 2026 from 9.4% in July 2026, down 4.1 points and classified as a significant decliner. The brand recorded 31 valid recommendations in October 2026, and its raw presence rate fell 4.7 points to 5.5%. Its top-three rate rose 1.8 points to 2.6%, a sizable increase on very small base counts.

AppleOne's absolute counts are now small enough that percentage movement is dominated by single observations. Spherion's coverage decline sits alongside a top-three gain, meaning the brand is appearing less often but placing higher when it does appear.

Highest-priority diagnostic: Whether AppleOne retains any concentration in a specific prompt niche, and which prompt types previously produced Spherion's higher coverage in July 2026.

Notable divergence: Express Employment Professionals separates from two smaller brands

The gap between Express Employment Professionals and Spherion widened by 12.2 points across the series, reaching 28.7 points in October 2026. The gap between Express Employment Professionals and PeopleReady widened by 12.0 points, reaching 21.4 points in October 2026. The gap between AppleOne Employment Services and Express Employment Professionals widened by 10.8 points in the opposite direction, reaching 33.5 points.

Neither widening is a one-to-one competitive displacement, since the brands operate in different segments of the staffing market. What the category can observe is a mid-field brand gaining recommendation credit at the same time as smaller brands lose it, which is a repositioning pattern rather than a direct head-to-head contest.

Highest-priority diagnostic: Whether the divergence concentrates in specific surfaces, and whether the smaller brands retain presence anywhere the mid-field brand does not.

Buyer-Intent Interpretation

Questions This Section Answers

• Which buyer-intent clusters does the benchmark actually measure for staffing agencies?
• What can the benchmark not yet explain about pricing or head-to-head comparisons?

In October 2026, all 579 qualified observations were classified into the Brand Recommendation cluster, which captures discovery and consideration prompts. The Pricing & Value and Multi-Brand Comparison clusters had no observations across July through October 2026. The public benchmark measures which brands AI systems recommend for staffing needs, but it cannot yet answer how AI systems frame pricing, value, or head-to-head comparisons for staffing agencies. Questions about cost positioning and direct competitive comparison remain outside what this data set can resolve.

Brand Opportunity Summary

Questions This Section Answers

• Which staffing agencies show the strongest or weakest signals entering the next measurement period?
• What diagnostic question does the benchmark identify for each tracked agency?

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, including the query, AI 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: AppleOne Employment Services (3 valid recommendations) and Staffmark Group (6 valid recommendations) in October 2026 operate on very small absolute counts, and their percentage movements are dominated by single observations.
• Qualified denominator vs raw collection: Brand-level percentages are calculated within the 579 qualified observations for October 2026, not the 800 raw prompt-surface observations. The raw universe includes irrelevant and reserved prompts.
• Directional analysis: Month-over-month movement identifies changes worth investigating. This report does not establish the cause of those changes. The October jump in recommendation-shaped answer share coincides with shifts in coverage for several brands, but prompt-level or company-level analysis is required to confirm any relationship.
• Intermediate months: August 2026 and September 2026 figures appear in prose as intermediate comparison points. The table columns compare July 2026 and October 2026 only, per the report's baseline-to-current structure.

Next Step

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

The aggregate coverage percentages in this report raise questions that only company-level analysis can answer. Which high-intent prompts is a brand winning or losing? When a brand loses a recommendation, which competitor takes its place? What attributes do AI systems associate with each staffing agency, and which external sources shape those answers?

A company-specific AI visibility audit maps these prompt, surface, competitor, ranking, sentiment, and evidence-source patterns into a prioritized visibility strategy. The benchmark shows where attention is warranted; the audit explains why and what to do about it.

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