A creator with 2 million followers sounds like a safe bet. A creator with 20,000 sounds like a gamble. In practice, the relationship between follower counts and results is weak, and in many categories, it runs the other way. Large accounts often have audiences that scrolled past them years ago, plus a long tail of bought or inactive followers. Small accounts can have tight, engaged communities where every video gets real comments and saves.
The number that matters for a campaign is closer to "how many people who see this creator's videos actually respond, and how consistently." That is harder to read, but it can be measured, and once you start measuring it, the shortlist of creators often changes completely.
Start with engagement rate, but define it carefully
Engagement rate is the most common shortcut. A simple version is:
(likes + comments + shares + saves) ÷ followers × 100
Three things make this number misleading if you do not handle them:
• Use recent posts only. An average across three years hides a creator who peaked in 2023 and has been declining since. Take the last 10 to 20 videos.
• Compare within a tier. A 3% rate means something different for a 5,000-follower account and a 5-million-follower account. Benchmark against creators of similar size and in the same niche.
• Watch the outliers. One viral video can lift the average and make a creator look stronger than their typical output. Compare the median post to the mean, and look at how many posts were above their normal range.
Engagement rate also has a known blind spot. It is measured relative to followers, so it can reward accounts whose followers are highly active in a way that does not translate into buying decisions. Treat it as one signal, not the decision.
Look at reach, not just followers
Reach asks a different question: how many people does a typical video actually get in front of? A practical proxy is recent views as a share of follower count. A creator with 500,000 followers whose videos regularly reach 50,000 people is reaching roughly 10% of their audience. A creator with the same follower counts whose videos reach 5,000 is reaching 1%, which tells you the algorithm is not distributing their content widely at the moment.
Reach changes with the platform, the niche and the creator's recent format, so it is most useful as a trend. If reach drops for three months in a row, that is a signal worth asking about before you sign anything.
Consistency is underrated
A creator who posts four times a week for two years is a different proposition from one who posts in bursts. Consistency matters for two reasons. First, it shows the creator can keep up a production schedule, which matters for a campaign with deliverables. Second, it means the audience has a steady relationship with the account rather than a few spikes.
Check the posting gaps. Look for long silences, especially in the weeks before a brand partnership. Sudden gaps can mean the creator is busy with other deals, has changed platforms, or has lost momentum. None of those is automatically disqualifying, but each one changes the risk.
Check for virality without relying on it
Virality is the upside case: videos that go several times above a creator's normal range. You do not want to pay for it, but you do want to know whether it happens. A creator with a few clear spikes in the last year has shown they can break out. A creator whose results are flat at every point in their history has a narrower ceiling, which may still be fine for a steady, low-risk campaign.
Count how many videos in the last year performed at more than five times the creator's median. Then ask whether those spikes came from a format you would actually want for your brand, such as a tutorial, a comedy skit or a product demo, or from something unrelated to your category.
Watch for signs of an unhealthy audience
Some warning signs are common enough to check for:
• Comments that are generic, repetitive or off-topic, such as the same emoji from many accounts
• A follower count that jumped sharply without a matching jump in views
• Views that stay high while comments and saves fall to near zero
• Many new followers from countries that do not match the creator's stated market
These are not proof of anything on their own. They are reasons to ask the creator for their audience breakdown, which reputable creators can usually provide, and to check it against a third-party view.
Put the numbers into a simple scorecard
A scorecard keeps the decision consistent across creators. A basic version might score five things out of 100 each: engagement against tier benchmark, reach as a share of followers, consistency, virality frequency, and audience health. Weight them to fit your goal. A conversion campaign might weight engagement and audience health higher. A brand awareness push might weight reach more.
Score every creator on the same window of recent posts, and write down the reasons for any score you change. A scorecard you cannot explain later is not much use when a campaign underperforms.
Where a platform can help
You can do all of this by hand. Pulling 20 posts per creator, calculating medians and checking comment quality takes time, and it is easy to skip steps when you are on a deadline. Creator analytics platforms exist to speed that up. InfluencerYaps (https://www.influenceryaps.com/) offers a free TikTok and Instagram creator database and a creator analyzer that scores an account on engagement, virality, reach, consistency and health. Check any tool's numbers against the raw posts before you spend, and treat a score as the start of the conversation rather than the end of it.
A checklist before you sign
• Pull the last 10 to 20 posts for each shortlisted creator.
• Calculate engagement rate on the median post, not only the average.
• Compare reach against follower count over the last three months.
• Count posting gaps and check for recent drops.
• Read a sample of comments on the three most recent videos.
• Ask for an audience breakdown by country and age.
• Score everyone on the same scale and write down why.
Follower counts are a starting point. The creators who deliver the most for a campaign are usually the ones whose recent audience is active, reachable and aligned with what you are selling. Those are the numbers worth spending time on.
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