How AI Search Is Recommending Recruiting Agencies: Monthly Trends

Executive Summary

Robert Half remains the recruiting agencies category leader in October 2026 with 53.4% valid recommendation coverage, ahead of Randstad at 46.9%, a 6.5-point gap. Both brands gained against the July 2026 baseline, and Korn Ferry posted the largest single-month move in the category, rising to 40.0% coverage.

Korn Ferry is the strongest upward mover with coverage, climbing 8.3 points from 31.7% coverage in July 2026 to 40.0% in October 2026, a significant gain. Randstad rose 8.7 points over the same span, from 38.2% to 46.9%, and Robert Half rose 6.6 points, from 46.8% to 53.4%. Together these three significant risers lifted the category's top tier.

No brand declined significantly against the July 2026 baseline. Aerotek recorded the only baseline decline on the primary metric, down 1.9 points, from 24.8% coverage in July 2026 to 22.9% in October 2026, which falls within normal month-to-month variation.

Relative to September 2026, Korn Ferry extended a two-month upward streak and moved from a lower-tier contender into third position on the primary coverage metric, behind Robert Half and Randstad. Robert Half and Randstad both extended two-month upward streaks. The category result sits at the top of the July-to-October series, where the previous month's total of 617 qualified observations gave way to 603 in October 2026.

Each monthly run begins with prompt-surface observations across the benchmark's defined AI/search surface universe. The October 2026 collection began with 800 source prompt-surface observations (512 unique questions); all 800 mentioned a tracked brand or competitor, 720 were relevant and 80 were irrelevant, and the public metrics use the 603 qualified observations that survive both qualification stages. The July 2026 baseline began from 792 source prompt-surface observations (514 unique questions), 791 of which mentioned a tracked brand or competitor, with 570 relevant and 221 irrelevant, yielding 521 qualified observations. The August 2026 interim month began from 791 source prompts (551 unique questions) and the September 2026 month from 800 (510 unique questions).

Key Findings

AI Response Inconsistency Alerts

Questions This Section Answers

• Where did AI platforms give conflicting answers about the recruiting agencies category this month?
• What factual claim did ChatGPT and Copilot disagree on, and which sources did each platform cite?

The benchmark detected 1 critical or high-severity factual inconsistency across 2 AI platforms in the current measurement period.

Randstad

AI platforms provided conflicting information about which company is the largest IT staffing company in the world, a critical-severity factual conflict. When asked "What is the largest IT staffing company in the world?", ChatGPT stated that TEKsystems is the largest IT staffing firm in the U.S. and that while Randstad or Adecco may be the largest overall staffing firms globally, Randstad was not identified as the largest IT staffing company. Copilot stated that Randstad is the largest IT staffing company in the world with about $23 billion in global staffing revenue. The two claims cannot both be true. ChatGPT cited sources including Direcstaff, the Ross Clennett newsletter (6 August 2026), and Ken Research. Copilot cited Staffing Industry Analysts' "100 largest global staffing firms earn $257B" and "The world's largest IT staffing firms," along with Press Farm's "Top 50 IT staffing companies in the US 2026."

Responses differed on the central factual claim in a high-intent category question. For recruiting agencies, conflicting answers about who leads a specific staffing segment are a category observation about how AI systems resolve competitive claims, not a statement about any single company's performance.

Benchmark Context

Questions This Section Answers

• How did the qualified benchmark set change between July 2026 and October 2026?
• How did the recommendation-shaped answer share shift across the same period?

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

September 2026 sat between these two months at 617 qualified observations, the high point of the series, before October 2026 settled at 603.

Benchmark-Level Metrics

September 2026 recorded a recommendation-shaped answer share of 36.0% and a valid recommendation shortlist share of 57.7%, both well below the October 2026 readings, indicating that a substantially larger share of qualified observations carried a recommendation structure this month.

AI Recommendation Trend

Questions This Section Answers

• Which recruiting agencies lead on valid recommendation coverage in October 2026?
• Which brands qualified as significant movers against the July 2026 baseline?
• Where did Korn Ferry land in the rankings after its upward move?

Robert Half and Randstad Retain the Front Two Positions While Korn Ferry Closes the Gap to Third

The table below compares each tracked brand's valid recommendation coverage between the July 2026 baseline and the October 2026 report month.

Three brands exceeded normal month-to-month variation on the primary coverage metric relative to the July 2026 baseline: Korn Ferry, Randstad, and Robert Half. Aerotek recorded the only baseline decline and it fell within normal variation. Elsewhere the category-level change came from the combination of smaller upward movements across the remaining brands.

What Changed This Month

Questions This Section Answers

• Why did Robert Half's recommendation coverage rise while its raw mention presence fell?
• What drove Randstad's top-3 gain, and how much did its presence change?
• Which brands declined against the July 2026 baseline, and was the decline significant?

Significantly rising leader: Robert Half

Robert Half's 53.4% valid recommendation coverage in October 2026 is up 6.6 points from its 46.8% July 2026 baseline, a significant gain. Against September 2026, coverage rose 6.7 points, extending a two-month upward streak.

The rise came from recommendation placement rather than broader presence. Robert Half recorded 322 valid recommendations in 603 qualified observations. Its top-3 rate held essentially flat at 30.9%, unchanged from the 30.9% July 2026 baseline, while raw mention presence fell 10.2 points, from 70.6% in July 2026 to 60.4% in October 2026.

The distinction is between presence and recommendation. Fewer AI answers named Robert Half at all, yet the share of qualified observations that placed it on a valid recommendation shortlist rose. The brand was recommended more often within the responses that surfaced it.

Highest-priority diagnostic: Which prompts account for the 10.2-point presence decline, and did those prompts move to competitors or to unbranded answers?

Significantly rising: Randstad

Randstad's 46.9% valid recommendation coverage in October 2026 is up 8.7 points from its 38.2% July 2026 baseline, a significant gain. Against September 2026, coverage rose 7.8 points, extending a two-month upward streak.

The gain is broad-based. Randstad recorded 283 valid recommendations in 603 qualified observations. Its top-3 rate rose 16.3 points, from 15.7% in July 2026 to 32.0% in October 2026, and its rank-one rate rose 4.7 points, from 5.4% to 10.1%. Raw mention presence held steady at 58.7% against the 58.4% July 2026 baseline.

The distinction is between a brand appearing and a brand being placed. Randstad's presence was unchanged while its placement improved sharply, meaning the same share of responses named the brand but far more of them ranked it in the top three.

Highest-priority diagnostic: Which prompts drove the 16.3-point top-3 gain, and did those prompts shift from single-mention answers to shortlist answers?

Significantly rising: Korn Ferry

Korn Ferry's 40.0% valid recommendation coverage in October 2026 is up 8.3 points from its 31.7% July 2026 baseline, a significant gain. Against September 2026, coverage rose 13.1 points, the largest single-month move in the category and the second month of an upward streak.

Korn Ferry recorded 241 valid recommendations in 603 qualified observations. Its top-3 rate rose 11.2 points, from 11.7% in July 2026 to 22.9% in October 2026, and its rank-one rate rose 7.2 points, from 8.2% to 15.4%. Raw mention presence was essentially unchanged at 47.6% against the 48.0% July 2026 baseline.

The distinction separates a brand that is being seen from one that is being chosen first. Korn Ferry's presence stayed flat while its rank-one rate nearly doubled, meaning it moved from an occasionally named option to a frequently first-named one.

Highest-priority diagnostic: Which prompts produced the 7.2-point rank-one gain, and which brands previously took those first positions?

Decliner: Aerotek

Aerotek's 22.9% valid recommendation coverage in October 2026 is down 1.9 points from its 24.8% July 2026 baseline, which falls within normal month-to-month variation rather than a significant decline. Against September 2026, coverage fell 1.2 points.

The low coverage percentage sits against a small absolute base. Aerotek recorded 138 valid recommendations in 603 qualified observations. Its top-3 rate fell 2.0 points, from 11.1% in July 2026 to 9.1% in October 2026, while its rank-one rate rose 1.7 points, from 2.3% to 4.0%. Raw mention presence fell 7.0 points, from 34.9% to 27.9%.

The distinction here is between coverage and rank-one placement. The brand was named in fewer responses overall, yet when it was named first it did so more often, so the coverage decline is not uniform across placement tiers.

Highest-priority diagnostic: Which prompts drove the 7.0-point presence decline, and is the coverage loss concentrated in top-3 placements?

Widening gap: Aerotek against the category front

The coverage gaps between Aerotek and three front-tier brands widened over the series. The gap to Randstad moved from 13.4 points in July 2026 to 24.0 points in October 2026, an increase of 10.6 points. The gap to Korn Ferry moved from 6.9 points to 17.1 points, up 10.2 points. The gap to Robert Half moved from 22.0 points to 30.5 points, up 8.5 points. None of these gaps widened every month of the series.

This is a category observation about competitive repositioning at the top of the recruiting agencies field. The front-tier brands pulled further ahead of Aerotek's position on average, while mid-tier brands such as Insight Global and ManpowerGroup held closer to the leaders on the primary metric.

Highest-priority diagnostic: Are these widening gaps driven by Aerotek's coverage change, the front-tier brands' gains, or the two movements combined?

Buyer-Intent Interpretation

Questions This Section Answers

• Which buyer-intent clusters did the October 2026 observations cover?
• Which commercial questions about pricing and head-to-head comparisons remain unanswered?

All 603 qualified observations in October 2026 fell into the brand recommendation class, the same single-class pattern recorded across the series. The commercial questions the public benchmark therefore cannot yet answer are the ones that sit in the empty classes: how AI systems frame pricing and fee comparisons between agencies, and how they conduct head-to-head evaluation when a buyer asks for a direct comparison. Comparison analysis observations totalled 8 and pricing analysis observations 3 in October 2026, too thin to support conclusions on either question.

Brand Opportunity Summary

Questions This Section Answers

• Which recruiting agencies are rising, and which are holding steady?
• What is the highest-priority diagnostic for each brand at its current position?

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

Evidence Behind the Benchmark

Questions This Section Answers

• What prompt-level data underlies the aggregate recommendation metrics?
• How should the coverage percentages be interpreted given the observation counts?

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.

Interpretation Notes

• The qualified denominator grew from 521 observations in July 2026 to 603 in October 2026, and the valid recommendation shortlist share rose 24.6 points, so the coverage percentages rest on a substantially larger set of recommendation-shaped answers than the baseline.
• Several brands carry small absolute valid-recommendation counts, so percentage movement on the primary metric should be read alongside the underlying observation counts, which are named in each brand's diagnostic entry.
• Movement between months 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 for October 2026 show Robert Half leading at 53.4%, Randstad at 46.9%, and Korn Ferry closing to 40.0%, but the questions beneath those percentages remain open. Which high-intent prompts is each front-tier brand winning, and which does it lose? Which competitor takes the recommendation when a brand loses coverage? What attributes do AI systems associate with each agency, and which external sources shape those answers?

A company-specific AI visibility audit maps those prompt, surface, competitor, ranking, sentiment, and evidence-source patterns into a prioritized visibility strategy. Rather than waiting for the next monthly signal, an audit can identify which specific queries and surfaces drive recommendation outcomes and where each brand's coverage can be strengthened.

Request an AI visibility audit