# Justworks vs Insperity: which do AI models recommend for peos, October 2026

HR AI Recommendation Index, October 2026 Edition, PEO providers. Zero of fourteen models named Justworks first on the direct prompt; two named Insperity. Page: https://hr-ai-index.com/core/peo-providers/justworks-vs-insperity/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Justworks | 24% | #1 of 9 | 8% | 38 | 13 of 14 |
| Insperity | 6% | #6 of 9 | 14% | 35 | 12 of 14 |

## The direct prompt, model by model

- Perplexity Sonar: insperity first (first choices: Insperity, Paychex) (alternatives: ADP TotalSource, Deel, Rippling)
- Grok 4.1 Fast: insperity first (first choices: Insperity) (alternatives: ADP TotalSource, Justworks, Paychex PEO, TriNet)
- GPT-5.4 mini: neither first, one named (first choices: ADP TotalSource) (alternatives: Insperity, TriNet)
- Gemini 3.5 Flash: neither first, one named (first choices: Rippling) (alternatives: ADP TotalSource, Insperity, TriNet)
- DeepSeek V4 Flash: neither first, one named (first choices: ADP TotalSource, Rippling) (alternatives: Insperity, Justworks, TriNet)
- Kimi K2: neither first, one named (first choices: ADP TotalSource, TriNet) (alternatives: Insperity, Justworks, Paychex PEO/Oasis)
- GLM 4.7 FlashX: neither first, one named (first choices: ADP TotalSource) (alternatives: G&A Partners, Justworks, Paychex PEO, Rippling, TriNet)
- GPT-6 Luna: neither first, one named (first choices: ADP TotalSource) (alternatives: Insperity, TriNet)
- Muse Glimmer 30B: neither first, one named (first choices: ADP TotalSource) (alternatives: Engage PEO, Insperity, Paychex PEO, TriNet)
- Claude Haiku 4.5: neither named
- Mistral Small: neither named (first choices: ADP TotalSource, Paychex PEO) (alternatives: Deel Hire)
- Llama 4 Maverick: neither named (first choices: Paychex PEO) (alternatives: Deel, Guideflow)
- Qwen 3.7 Flash: neither named (first choices: CoAdvantage) (alternatives: Deel, Paychex PEO, TriNet)
- MiniMax M2.5: neither named (first choices: Paychex PEO) (alternatives: CoAdvantage, Deel Hire)

## What the models said about Justworks

- "though it may be a better fit for smaller or less complex teams than a traditional mid-market operation" (Perplexity Sonar, direct prompt, soft negative)
- "While big names (like TriNet, JustWorks, ADP) get complaints due to their size" (Qwen 3.7 Flash, negative prompt, soft negative)
- "Justworks is usually the best first PEO to look at because it's widely cited as a low-friction option with transparent per-employee pricing" (GPT-5.4 mini, budget prompt, first choice)
- "For pure budget (under $100/employee) + full PEO: Start with Justworks Basic. It's frequently ranked #1 for small businesses" (Grok 4.1 Fast, budget prompt, first choice)
- "Justworks and the provider highlighted by EORHQ (at $59/employee/month) are the top choices due to their affordability" (Mistral Small, budget prompt, first choice)

## What the models said about Insperity

- "Avoid or approach with extreme caution: Any PEO without ESAC accreditation or IRS CPEO certification" (Kimi K2, negative prompt, hard negative)
- "Insperity: Frustrations with slow support, unauthorized deductions, billing disputes, withholding records—mixed but recurring in DesignRush/BBB." (Grok 4.1 Fast, negative prompt, soft negative)
- "Insperity is more expensive on the administrative side, with an average price of around $220 per employee per month" (Claude Haiku 4.5, comparative prompt, soft negative)
- "the most practical default choice is often Insperity if you want strategic HR support" (Perplexity Sonar, direct prompt, first choice)
- "Peometrics/PEO Consulting: Insperity for mid-market HR; ADP for scale." (Grok 4.1 Fast, direct prompt, first choice)
- "Top Recommendation: Insperity" (DeepSeek V4 Flash, paraphrase prompt, first choice)

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen models, for a mid-market B2B company; rank is within the category. Comparisons are drawn for the top eight products in each category. Published under CC BY 4.0; the output is the models' output, and nothing here is a recommendation by the index.