Gusto vs Paychex Flex
Zero of fourteen models named Gusto first on the direct prompt; zero named Paychex Flex. Both were named by all fourteen models and Gusto carries 49 labels and Paychex Flex 35, so the shares are not directly comparable.
Named in twenty-four categories this edition.
Named in nine categories this edition.
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; every quote names the model and the prompt it came from. Both figures come from the payroll software page.
By framing
GustoFirst choices, of fourteen modelsPaychex Flex
Across every category in the October 2026 Edition, Gusto and Paychex Flex were named in the same answer 107 times, of the 926 answers naming Gusto and the 157 naming Paychex Flex. In those answers Paychex Flex took the first choice two times and Gusto forty-one.
Every model, every framing
| Model | Direct | Paraphrase | Comparative | Budget-constrained | Scale-constrained | Negative |
|---|---|---|---|---|---|---|
| Claude Haiku 4.5 | | | ||||
| GPT-5.4 mini | | | | | ||
| Gemini 3.5 Flash | | | | | ||
| Perplexity Sonar | | | ||||
| Grok 4.1 Fast | | | | | | |
| Mistral Small | ||||||
| DeepSeek V4 Flash | | | | | ||
| Llama 4 Maverick | | | | |||
| Qwen 3.7 Flash | | | | | | |
| Kimi K2 | | | | | ||
| GLM 4.7 FlashX | | | | | ||
| MiniMax M2.5 | | | | | | |
| GPT-6 Luna | | | ||||
| Muse Glimmer 30B | | | | |
Gusto Paychex Flex first choice named as an alternative argued againstblank: not namedEach cell is one answer, Gusto on the left and Paychex Flex on the right.The direct prompt
Neither was the first choice, one was named
4 of 14 modelsThe answer put something else first and named one of the two as an alternative.Neither was named
10 of 14 modelsThe answer made no first choice from these two in this category.Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
By buyer segment
Gusto49%#1 of 11Paychex Flex0%#9 of 11Paychex Flex3%#9 of 14Gusto0%#14 of 14What the models said about Gusto
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. One of one in this category shown.
“Small US business with <500 employees, no HR department: Start with Gusto for simplicity and transparency.” GLM 4.7 FlashX · comparative prompt · first choice
What the models said about Paychex Flex
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Four of four in this category shown.
“Hidden fees — documented early termination fees of $1,500–$3,000 ... Missed payrolls and tax filing errors” DeepSeek V4 Flash · negative prompt · hard negative
“Recent class-action lawsuit over a 2024 data breach exposing names/SSNs due to negligence” Grok 4.1 Fast · negative prompt · hard negative
“I'd recommend ADP Workforce Now or Paychex Flex as top choices” Grok 4.1 Fast · paraphrase prompt · first choice
“Modular, strong payroll support, multi-state compliance, good for small to midsize businesses.” GLM 4.7 FlashX · comparative prompt · alternative
Comparisons are drawn for the top eight products in each category, each against each. The output is the models' output; nothing here is a recommendation by the index.