How AI Search Is Recommending Staffing Agencies: Monthly Trends

Executive Summary

Robert Half retains category leadership for valid recommendation coverage in September 2026 at 47.2%, but the leader's edge over the next brand narrowed to 6.5 points. Randstad holds second place at 40.7%. The category rebounded strongly from August's contraction, with every tracked brand except Openjobmetis SpA recording an increase in coverage versus the prior month, and the leader's gap to second place tightening as the field reconverged.

PrideStaff was the strongest upward mover, rising to 9.5% coverage in September 2026 from 2.6% in August 2026, a gain of 6.9 points. PrideStaff also saw its top-three recommendation rate climb to 4.6% from 1.2% in July 2026, and its rank-one rate reach 1.7% from 0.8%. The brand was present in 61 of 587 qualified observations. Robert Half recorded the largest single-month rebound, up 24.3 points to 47.2% from 22.9% in August 2026, though its baseline-to-current movement of Down 3.4 points from July 2026 was not significant.

Six brands recorded significant declines when measured against the July 2026 baseline: Adecco, AppleOne Employment Services, Employbridge, Kelly Services, PeopleReady, and Spherion. However, each of those brands rose month over month from August to September 2026, meaning the declines reflect a partial recovery from July levels rather than continued erosion. The month's story is one of category-wide recovery following August's contraction, with coverage levels approaching but not fully matching July figures.

Each monthly run begins with 800 prompt-surface observations (536 unique questions) across the benchmark's defined AI/search surface universe in September 2026, compared with 788 prompt-surface observations (577 unique questions) in August 2026 and 772 prompt-surface observations (496 unique questions) in July 2026. Of those, 800 mentioned a tracked brand or competitor in September 2026, versus 788 in August and 772 in July; 751 were relevant and 49 were irrelevant in September 2026, versus 703 relevant and 85 irrelevant in August, and 608 relevant and 164 irrelevant in July. The public metrics use the 587 qualified observations in September 2026, the 547 qualified observations in August 2026, and the 498 qualified observations in July 2026 that survive both qualification stages.

Key Findings

Benchmark Context

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 sat between these two months as the low point of the series, with 547 qualified observations and a recommendation-shaped answer share of 20.1%. The September figures show the category returning toward July's composition, though the qualified observation count of 587 is the highest of the three months.

Benchmark-Level Metrics

The following metrics summarize the qualified benchmark's overall answer composition for the two months in this comparison.

The intermediate month of August 2026 recorded a recommendation-shaped answer share of 20.1% and a valid recommendation shortlist share of 26.7%, making September's figures a clear recovery toward July levels. The valid recommendation shortlist share of 64.7% in September 2026 is the highest of the three months.

AI Recommendation Trend

Category rebounds from August contraction, leader gap narrows

The staffing agencies category recovered most of its July positioning in September 2026. Robert Half leads at 47.2% valid recommendation coverage, down 3.4 points from July 2026 but up 24.3 points from August 2026. The leader's edge over Randstad stands at 6.5 points, narrower than the 7.4-point gap recorded in July 2026. August's broad contraction has reversed, with coverage levels across the category returning toward their July range.

The result is a category that sits closer to July's distribution but with a tighter cluster at the top, as the leading brands recovered less ground proportionally than several mid-tier competitors.

What Changed This Month

Robert Half: Leader rebounds but lead narrows

Robert Half's valid recommendation coverage rose to 47.2% in September 2026 from 22.9% in August 2026, a gain of 24.3 points. Measured against the July 2026 baseline of 50.6%, the brand is down 3.4 points, a movement that does not exceed normal month-to-month variation. The brand was present in 397 of 587 qualified observations in September 2026, versus 152 of 547 in August 2026.

Robert Half was recommended in the top three in 22.3% of observations in September 2026, up from 13.9% in August 2026 but below the 25.1% recorded in July 2026. Rank-one recommendations reached 13.5% in September 2026, up from 10.1% in August 2026, with 79 rank-one placements. The brand's average recommended rank stood at 3.0 in September 2026, close to the 2.8 recorded in July 2026.

Robert Half retains category leadership, but its margin over Randstad narrowed to 6.5 points in September 2026 from 7.4 points in July 2026. The leader's rank-one rate of 13.5% remains the strongest in the category, substantially ahead of Randstad's 9.9%.

Highest-priority diagnostic: Which prompt types drove Robert Half's August decline and September recovery, and whether rank-one frequency has stabilized at a level below its July peak.

Adecco: Significant baseline decline despite strong monthly recovery

Adecco's valid recommendation coverage reached 36.6% in September 2026, up 20.2 points from 16.4% in August 2026. Measured against the July 2026 baseline of 43.6%, the brand is down 7.0 points, a significant decline. Adecco was present in 341 of 587 qualified observations in September 2026, versus 118 of 547 in August 2026.

Adecco's rank-one recommendation rate fell to 3.2% in September 2026 from 5.8% in July 2026, a decline of 2.6 points. The brand recorded 19 rank-one placements in September 2026, down from 29 in July 2026. Top-three recommendations reached 17.2% in September 2026, down 4.7 points from the 21.9% baseline, though this movement was not classified as significant.

While Adecco recovered most of its presence in September 2026, the brand's positioning within recommendation lists has softened. The brand is visible again, but it is appearing in top positions less often than it did in July 2026.

Highest-priority diagnostic: Which competitors are capturing the rank-one placements Adecco held in July 2026, and whether the September recovery is concentrated in lower-ranked recommendations.

PrideStaff: Significant riser on strong top-three gains

PrideStaff's valid recommendation coverage rose to 9.5% in September 2026, up 3.7 points from 5.8% in July 2026, a significant increase. The brand recorded 56 valid recommendations in September 2026, up from 29 in July 2026 and 14 in August 2026. Presence climbed to 10.4% of observations in September 2026 from 6.4% in July 2026, a rise.

PrideStaff's top-three recommendation rate reached 4.6% in September 2026, up from 1.2% in July 2026, a gain of 3.4 points. The brand recorded 27 top-three placements in September 2026, up from 6 in July 2026. Rank-one recommendations reached 1.7% in September 2026, up from 0.8%, though this movement was not classified as significant.

The brand's absolute counts remain small, with only 56 valid recommendations in September 2026. However, the movement is substantial relative to the brand's prior standing, and the top-three gains suggest PrideStaff is appearing in more prominent positions rather than merely being mentioned more often.

Highest-priority diagnostic: Which prompt categories account for PrideStaff's new top-three placements, and whether those prompts represent durable demand or a narrower segment.

Express Employment Professionals and Insight Global: Notable top-three gains

Express Employment Professionals reached 30.0% valid recommendation coverage in September 2026, up from 25.9% in July 2026, a gain of 4.1 points that was not classified as significant. However, the brand's top-three rate rose to 11.8% from 4.8%, a gain of 7.0 points, and its rank-one rate reached 4.8% from 1.2%. Express recorded 28 rank-one placements in September 2026, up from 6 in July 2026.

Insight Global reached 34.8% coverage in September 2026, up from 31.7% in July 2026, a gain of 3.1 points that was not significant. The brand's top-three rate rose to 15.3% from 10.4%, a gain of 4.9 points. Insight Global recorded 90 top-three placements in September 2026, up from 52 in July 2026.

Both brands show improved positioning within recommendation lists even where their overall coverage changes were not classified as significant. Adecco's coverage lead over Express Employment Professionals narrowed from 17.7 points in July 2026 to 6.6 points in September 2026, and its lead over Insight Global narrowed from 11.9 points to just 1.8 points over the same period.

Highest-priority diagnostic: Which attributes AI systems now associate with Express Employment Professionals and Insight Global in top-three positions, and which sources are driving the improved framing.

Smaller brands: Significant baseline declines with monthly improvement

Kelly Services, PeopleReady, and Spherion each recorded significant declines against the July 2026 baseline while improving from August 2026 levels. Kelly Services fell to 19.1% in September 2026 from 25.1% in July 2026, down 6.0 points, with rank-one recommendations falling to 1 from 9. PeopleReady fell to 11.6% from 16.5%, down 4.9 points, with 68 valid recommendations in September 2026. Spherion fell to 4.9% from 9.4%, down 4.5 points, with 29 valid recommendations.

AppleOne Employment Services and Employbridge also recorded significant baseline declines on very small counts, with 7 and 12 valid recommendations in September 2026 respectively. Percentage movements for these brands should be interpreted with caution given the small absolute counts.

Highest-priority diagnostic: Whether the baseline declines for Kelly Services, PeopleReady, and Spherion reflect lost presence in specific prompt segments or a broader repositioning of the AI systems' recommendation sets.

Buyer-Intent Interpretation

In September 2026, all 587 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 in July, August, or September 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.

Brand Opportunity Summary

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 AI Industry Market Discovery research program.

• AI Industry Market Discovery Methodology
• AI Industry Market Discovery Metrics
• AI Industry Market Discovery Standards

Report-Specific Interpretation Notes

• Small-count movement: Brands such as AppleOne Employment Services, Employbridge, and Staffmark Group operate on very small observation counts (7, 12, and 7 valid recommendations respectively in September 2026). Percentage movements for these brands should be interpreted with caution.
• Qualified denominator vs raw collection: Brand-level percentages are calculated within the 587 qualified observations for September 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 August 2026 contraction and September 2026 recovery coincide with shifts in the benchmark's recommendation-shaped answer share, but prompt-level or company-level analysis is required to confirm.
• August as intermediate month: August 2026 figures appear in prose throughout this report as the intermediate comparison point. The table columns compare July 2026 and September 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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