AI Rankings · Professional Services

ChatGPT's shortlist: HR outsourcing and PEO providers, market by market

HR outsourcing and PEO providers take on payroll, benefits, compliance and HR administration for employers, often as a co-employer that gives small companies access to large-group benefits.

5markets live
120ChatGPT answers read
3 Oct 2026latest snapshot

Across markets

Named in the most markets

  1. TriNettop 20 in 5 of 5 · #1 in 2
  2. Paychex PEOtop 20 in 5 of 5 · #1 in 1
  3. Insperitytop 20 in 5 of 5
  4. ADP TotalSourcetop 20 in 5 of 5
  5. Justworkstop 20 in 5 of 5
  6. CLEAR Employer Servicestop 20 in 2 of 5 · #1 in 1
  7. Excellenttop 20 in 2 of 5
  8. Group Management Servicestop 20 in 2 of 5
  9. Ripplingtop 20 in 2 of 5
  10. G&A Partnerstop 20 in 2 of 5

Nationwide

Snapshot 3 Oct 2026 · 24 answers · 19 named

United States

  1. TriNet88%
  2. ADP TotalSource83%
  3. Insperity83%

Leader: ADP TotalSource

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By state

Snapshot 3 Oct 2026 · 24 answers · 63 named

California

  1. TriNet96%
  2. Insperity92%
  3. Justworks83%

No Leader yet

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Snapshot 3 Oct 2026 · 24 answers · 43 named

New Jersey

  1. ExtensisHR92%
  2. Insperity92%
  3. Cornerstone PEO79%

No Leader yet

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Snapshot 3 Oct 2026 · 24 answers · 46 named

Pennsylvania

  1. CLEAR Employer Services88%
  2. Insperity88%
  3. Kismet PEO83%

Leader: CLEAR Employer Services

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Snapshot 3 Oct 2026 · 24 answers · 44 named

Texas

  1. Paychex PEO92%
  2. Insperity88%
  3. ADP TotalSource88%

Leader: G&A Partners

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Coming next

Ohio · Illinois · Michigan · Indiana · Maryland · Virginia · Washington, DC · New York · Florida · Massachusetts · Minnesota · Wisconsin · Connecticut · Rhode Island