401(k) providers · October 2026 Edition
Guideline vs Fidelity Advantage 401
Three of fourteen models named Guideline first on the direct prompt; one named Fidelity Advantage 401. Guideline was named by eleven of the fourteen models and Fidelity Advantage 401 by thirteen and Guideline carries 32 labels and Fidelity Advantage 401 36, so the shares are not directly comparable.
Named in two categories this edition.
Named in one category this edition.
First-choice share20%9%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate9%0%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#2#5A position in a field of 12; printed, not drawn.
Labels3236A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Guideline reading right to left. Rank and label count are printed, not drawn.ADP Retirement Services was named alongside these two in nine of the fourteen direct answers. Human Interest vs Guideline · Human Interest vs Fidelity Advantage 401 · Guideline vs ADP Retirement Services
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 401(k) providers page.
By framing
How many of the fourteen models made each the first choice, per way of asking, and how many argued against it.
GuidelineFirst choices, of fourteen modelsFidelity Advantage 401
Direct31
Paraphrase13
Comparative02
Budget-constrained71
Scale-constrained00
Negative043 against Guideline
Bars are first choices, 0 to 14 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to fourteen.
Across every category in the October 2026 Edition, Guideline and Fidelity Advantage 401 were named in the same answer fifty-four times, of the 99 answers naming Guideline and the 107 naming Fidelity Advantage 401. In those answers Fidelity Advantage 401 took the first choice ten times and Guideline twenty-six.
Every model, every framing
The eighty-four answers behind the chart above, one cell each: where Guideline and Fidelity Advantage 401 stood in it.
| 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 | | |
Guideline Fidelity Advantage 401 first choice named as an alternative argued againstblank: not namedEach cell is one answer, Guideline on the left and Fidelity Advantage 401 on the right.The direct prompt
The plain question, one answer per model, grouped by where Guideline and Fidelity Advantage 401 stood in it.
Guideline first, Fidelity Advantage 401 an alternative
3 of 14 modelsFidelity Advantage 401 was named in the answer but not as the choice, or not at all.Grok 4.1 FastGuideline, Human Interest alternatives: ADP Retirement Services, Charles Schwab, Fidelity Advantage 401, Principal, Vanguard
DeepSeek V4 FlashFidelity Investments, Guideline, Human Interest alternatives: ADP Retirement Services, Empower Retirement, T. Rowe Price
Qwen 3.7 FlashFidelity Investments, Guideline, Lighthouse Group alternatives: Charles Schwab, Vanguard
Fidelity Advantage 401 first, Guideline not the choice
1 of 14 modelsGuideline was named in the answer but not as the choice, or not at all.Mistral SmallFidelity Advantage 401 alternatives: ADP Retirement Services, Empower Retirement
Neither was the first choice, one was named
2 of 14 modelsThe answer put something else first and named one of the two as an alternative.Perplexity SonarADP Retirement Services, Human Interest alternatives: Empower Retirement, Fidelity Advantage 401, John Hancock, Securian Financial
Muse Glimmer 30BEmpower Retirement, Fidelity Investments alternatives: ADP Retirement Services, Employee Fiduciary, Guideline, Human Interest, Nationwide, Vanguard
Neither was named
8 of 14 modelsThe answer made no first choice from these two in this category.Claude Haiku 4.5Human Interest alternatives: Fidelity Investments, Principal, Vanguard
GPT-5.4 miniADP Retirement Services alternatives: Empower Retirement, Gusto, ShareBuilder 401k
Gemini 3.5 FlashHuman Interest alternatives: ADP Retirement Services, Fidelity Investments, Principal Financial Group
Llama 4 Maverickno first choice
Kimi K2Fidelity Investments alternatives: ADP Retirement Services, Empower Retirement, T. Rowe Price, Vanguard
GLM 4.7 FlashXHuman Interest alternatives: ADP Retirement Services, Fidelity Investments, Vanguard
MiniMax M2.5Human Interest alternatives: Empower Retirement, T. Rowe Price
GPT-6 LunaADP 401(k) Premier alternatives: Empower Retirement, Fidelity Workplace, Principal
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
The same question asked on behalf of a different buyer. Each standing is computed within its segment and they are never added together. The figures above are the mid-market standing, which is the one the category orders by.
Small business
Guideline leads by thirty-two points.
Guideline43%#1 of 9Fidelity Advantage 40111%#3 of 9Mid-marketThe figures above
Guideline leads by eleven points.
Guideline20%#2 of 12Fidelity Advantage 4019%#5 of 12Enterprise
The order flips: Fidelity Advantage 401 leads at enterprise.
Fidelity Advantage 40113%#2 of 11Guideline4%#7 of 11What the models said about Guideline
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of seven in this category shown.
“BBB customer reviews include stark warnings, e.g.: "Avoid at all costs." "You will never be able to get your money out."” Muse Glimmer 30B · negative prompt · hard negative
“Users call it "crooks" and warn against it.” Grok 4.1 Fast · negative prompt · hard negative
“reporting high costs, poor service, or rollover/admin problems” Perplexity Sonar · negative prompt · soft negative
“Guideline is typically the best choice for companies with a limited budget due to its low monthly base fee ($39), no setup costs” Kimi K2 · budget prompt · first choice
“Start with Guideline if you prioritize ease, integrations, and scalability—it's frequently top-rated for budget-conscious SMBs.” Grok 4.1 Fast · budget prompt · first choice
“Guideline is often the strongest pick because it is explicitly positioned as an affordable, fully automated 401(k)” Perplexity Sonar · budget prompt · first choice
What the models said about Fidelity Advantage 401
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Three of four in this category shown.
“Fidelity – Highly rated for its broad investment lineup, transparent fees, strong digital tools, and education resources. It's a top choice” Mistral Small · direct prompt · first choice
“1. Fidelity Investments - Best for: Large and mid-sized companies; top-rated mobile app, zero-fee index funds (e.g., FZROX).” Grok 4.1 Fast · comparative prompt · first choice
“If it is Fidelity, Vanguard, Schwab, or Empower, you are in safe territory regarding platform security and customer service.” Qwen 3.7 Flash · negative prompt · first choice
Also compared
Human Interest vs GuidelineHuman Interest vs Fidelity Advantage 401Guideline vs ADP Retirement ServicesGuideline vs Fidelity InvestmentsGuideline vs Empower RetirementGuideline vs VanguardGuideline vs PrincipalADP Retirement Services vs Fidelity Advantage 401Fidelity Investments vs Fidelity Advantage 401Fidelity Advantage 401 vs Empower RetirementFidelity Advantage 401 vs VanguardFidelity Advantage 401 vs PrincipalAll twenty-eight head-to-head pages and the full 401(k) providers standing
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.