Agency comparison

Flat 101 vs Human Level

Flat 101 and Human Level are both credible shortlist options, but they fit different briefs. Flat 101 is ranked #183 globally and is strongest for ecommerce, while Human Level is ranked #182 and leads with enterprise seo. Both operate from Spain, with Flat 101 based in Madrid and Human Level in Alicante. The better fit depends on the services, client model and engagement band your brief requires.

Visit Flat 101 Visit Human Level

At a glance

Side-by-side comparison

Comparison of Flat 101 and Human Level
Metric	Flat 101	Human Level
Global rank	#183	#182
Location	Madrid, Spain	Alicante, Spain
Specialisations	eCommerce, Analytics, SEO	Enterprise SEO, AI search, International SEO
AI SEO capability	Established	Strong
SEO capability	Strong	Leading
Public evidence	1 source reviewed	1 source reviewed
Client fit	Enterprise	Enterprise
Price band	$$$	$$$
Best suited to	Flat 101 suits enterprise teams buying eCommerce depth over breadth.	Human Level is best matched to enterprise organisations where AI search carries the strategy.
Considerations	Flat 101 is less suited to startups still too early for a full enterprise program.	Human Level is less suited to small budgets, with minimum engagements sized for enterprise work.

Detailed comparison

How the agencies differ

Capabilities and focus

The two agencies overlap across their broader search briefs, which makes a direct comparison useful. Flat 101 is assessed as established for AI SEO and strong for established SEO work. Its distinctive listed capabilities include eCommerce, Analytics, SEO. Human Level is assessed as strong for AI SEO and leading for SEO, with Enterprise SEO, AI search, International SEO helping to distinguish its offer. These labels compare the range and public evidence visible during the August 2026 assessment; they are not guarantees of a particular ranking, citation or commercial outcome. Buyers should ask each agency to show recent work that matches the technical environment, market and search problem in the brief.

Working model and engagement

Flat 101 is listed for enterprise organisations in the $$$ engagement band. Human Level is listed for enterprise organisations in the $$$ band. The dollar symbols are relative comparison bands rather than quoted fees, and a higher band is not a quality score. Scope, senior involvement, location, contract length and implementation support can all change the real cost. Because both agencies are listed in Spain, buyers can concentrate on delivery model and team fit rather than comparing two entirely different market contexts. Ask both agencies to price the same written scope so that retainers, projects and optional work can be compared on a like-for-like basis.

Evidence and expected output

Leading Search List reviewed 1 public source for Flat 101 and 1 for Human Level. That evidence supports an editorial comparison, but it does not replace buyer due diligence. Flat 101 and Human Level have different stated buyer fits. Before appointing either agency, request a named delivery team, a ninety-day plan, reporting examples and two case studies that resemble your organisation. For AI SEO, ask how the agency measures visibility in Google AI Overviews, ChatGPT, Gemini and Perplexity without separating that work from technical SEO, authority and useful content. The strongest proposal should connect outputs to a commercial objective and state which recommendations the agency will implement itself.

Choosing between them

Which agency fits your brief?

Choose Flat 101 if…

Choose Flat 101 when ecommerce is central to the brief, the enterprise client model fits your organisation and its eCommerce, Analytics, SEO capabilities are more relevant to the work ahead.

Read the Flat 101 review

Choose Human Level if…

Choose Human Level when enterprise seo is the priority, its enterprise delivery model is the better match and you need more emphasis on Enterprise SEO, AI search, International SEO.

Read the Human Level review

Frequently asked questions

What buyers ask about Flat 101 and Human Level

Is Flat 101 better than Human Level?

Flat 101 is ranked #183 globally and Human Level is ranked #182, but the higher-ranked agency is not automatically the better fit for every brief. Compare their primary services, client fit, evidence and proposed delivery team against the same written requirements.

What do Flat 101 and Human Level cost?

Flat 101 is placed in the $$$ relative price band and Human Level in the $$$ band. These symbols are comparison guides, not quotations. Confirm current fees, minimum engagement, currency and included services directly with each agency.

Explore the evidence behind this comparison.

Flat 101 review Human Level review Best agencies in Spain

Comparison checked 26 August 2026. Rankings, service information and price bands reflect the 2026 assessment. Confirm scope, availability and current fees directly with each agency.