Creator tiers, and what a micro-influencer actually is
A micro-influencer is a creator with roughly 10,000 to 100,000 followers. That is the definition — but the number is not the interesting part. What matters is that this tier usually converts better than tiers ten times its size, and the chart below shows why.
Reach and engagement pull in opposite directions
Each row is a tier. The left bar is how many people a creator reaches; the right bar is what share of them respond. Read down the rows and you can see the entire economics of the category without reading a number.
A person with a real-life following — a local trainer, a hobbyist, a parent with an engaged group of friends. Comments read like conversations between people who know each other. Watch for: You need a lot of them to reach any scale, and managing fifty relationships is a job.
A specialist with a defined subject — cast-iron cooking, marathon training, a specific console. The best balance on this ladder: enough reach to matter, enough trust to convert. Watch for: Quality varies wildly. This is the tier where vetting earns its keep.
A full-time creator with a production routine and, usually, a manager. Professional delivery. Briefs get followed and deadlines get met. Watch for: Rates jump here, and so does the number of other brands in the feed.
A recognised name inside their category, often with an agent. Reach in a single post, and a name that lends the brand credibility. Watch for: Audiences are broad, so a rising share of the people you pay for do not care.
A celebrity, or a creator who has become one. Mass awareness fast, and coverage of the partnership itself. Watch for: You are buying reach, not trust. Expect the lowest engagement rate on the ladder.
Audience size, log scale Engagement rate — teal is stronger
Why smaller audiences engage more
Three things happen as a creator grows, and all three push engagement down.
The audience gets less specific. A creator with 8,000 followers who posts about cast-iron cooking has 8,000 people who care about cast iron. At 800,000 the same creator has a large audience that arrived for one viral video and stayed out of habit. The denominator grows faster than the number of genuinely interested people.
The relationship gets thinner. A nano-creator replies to comments individually. Nobody with a million followers can, so the exchange becomes broadcast, and broadcast audiences behave like an audience rather than like a community.
The feed algorithm samples harder. Platforms show a post to a fraction of a large following before deciding whether to push further, so a big account's early engagement rate is measured against a follower count that never saw the post.
Which tier to buy
The tier is a budget decision disguised as a taste decision. Work backwards from what the campaign is for.
- You need people to buy something. Micro, and a lot of them. You are buying trust and specificity, and you can afford enough creators to learn which ones work.
- You need people to know you exist. Macro or mega. You are buying reach, and the low engagement rate is the price of it.
- You need content you can reuse. Mid-tier. They shoot professionally, hit deadlines, and licence usage rights without a negotiation.
- You need credibility in a niche. Nano and micro, chosen by subject rather than size. A 4,000-follower physiotherapist sells physiotherapy equipment better than a celebrity does.
The mistake this chart is meant to prevent
Buying reach when you needed conversion. A mega-creator post reaching a million people at 1.1% engagement produces fewer meaningful actions than thirty micro-creators reaching 30,000 each at 3.2% — and usually costs more. The reason the mega post still gets bought is that reach is the number that sounds impressive in a status report.
Both are legitimate purchases. They are just not the same purchase, and the failure mode is buying one while being measured on the other. How to measure a campaign covers which numbers to hold an agency to.
Keep reading
Campaign types
Gifting, paid posts, affiliate, whitelisting, ambassadors and takeovers — and when each one fits.
Pricing
Creator rates by tier, how agencies charge on top, and where budgets actually go.
Measurement
Reach, engagement, EMV and conversions — which numbers mean something and which flatter.
Disclosure
What the FTC requires, what each platform requires, and who is liable when it goes wrong.
Choosing an agency
What to ask, what the answers should sound like, and the terms that matter in the contract.