Reviews are still the loudest voice in a purchase decision, and the most trusted one. They’re also the one now under the most suspicion.
According to Alchemer’s 2026 Retail Report: Retail AI Adoption Outpaces Consumer Trust, 70.2% of shoppers read reviews before buying and nearly half call them very or extremely influential. At the same time, 42% worry the reviews they’re reading are fake or created by AI. More reviews won’t fix that. Better ones will.
TL;DR — key takeaways
- 70.2% of shoppers read reviews before buying, and nearly half rate them very or extremely influential, according to Alchemer’s 2026 Retail Report.
- Online reviews are the most trusted purchase source at 36.1%, ahead of friends and family (31.2%) and AI recommendations (15.4%).
- 42% of shoppers suspect the reviews they read are fake or AI-generated, 40.6% suspect they’re paid or incentivized and 32.5% think brands manipulate them.
- Google Reviews are the most influential source at 51.6%, followed by Amazon (40.9%) and the retailer’s own site (37.1%).
- Gen AI review summaries already carry more influence (13.6%) than YouTube product videos (12.1%) or Trustpilot and Yelp (11.9%).
Do online reviews still influence purchases?
More than any other source. Per Alchemer’s 2026 Retail Report, 70.2% of shoppers read reviews before buying, nearly half consider them very or extremely influential, and reviews rank as the single most trusted input at the moment of purchase (36.1%). In a year when shoppers are cautious with every dollar, other people’s experience is the closest thing to proof they have.
Which review sources do shoppers actually trust?
A short list, with Google well out in front:
| Most influential review source | % of shoppers |
|---|---|
| Google Reviews | 51.6% |
| Amazon Reviews | 40.9% |
| Reviews on the retailer’s website | 37.1% |
| Gen AI summaries | 13.6% |
| YouTube product videos | 12.1% |
| Trustpilot, Yelp or similar | 11.9% |
| TikTok | 8.5% |
Two things stand out. Google alone influences more than half of shoppers, which makes an unmanaged Google presence an expensive gap. And Gen AI summaries have already passed YouTube and Trustpilot, meaning a growing share of shoppers never read your reviews. They read a machine’s paraphrase of them.
What is the review credibility problem?
It’s the growing share of shoppers who read reviews and discount what they say. Here’s what shoppers suspect:
| Concern about online review credibility | % of shoppers |
|---|---|
| Reviews may be fake or AI-generated | 42.0% |
| Reviews may be paid or incentivized | 40.6% |
| Reviews may be manipulated by brands | 32.5% |
Roughly four in 10 shoppers arrive at your reviews already braced for a con. That’s the environment every review you generate now enters, and it changes what makes one useful.
What makes a review credible in 2026?
Substance. Against that level of skepticism, specific product-quality commentary matters more than the star rating or the sheer number of reviews. A detailed account of how a jacket held up in the rain is harder to fake and easier to believe than 4,000 five-star ratings with nothing written under them. Volume used to be the signal. Now specificity is.
That also changes how you ask. A prompt that invites a shopper to describe what they actually experienced produces more usable reviews than one that just asks for stars.
Your reviews are a sales channel. Manage them like one. Alchemer monitors and responds to reviews across Google, Amazon and the platforms your shoppers actually use, and surfaces the product-quality themes driving sentiment across every location. Explore Alchemer for Retail →
What should retailers do about it?
Treat review quality as a reputation strategy rather than a volume target:
- Own Google first. At 51.6% influence, it’s the highest-leverage review surface you have.
- Ask for specifics, not stars. Detailed product commentary is what survives shopper skepticism.
- Respond, publicly and quickly. A visible response is evidence a real company is on the other end.
- Watch what AI summaries say about you. With Gen AI summaries at 13.6% influence, the paraphrase is becoming the review.
The credibility problem is a real headwind, and it’s also an opening. When four in 10 shoppers doubt reviews by default, a review presence that clearly holds up becomes a genuine differentiator instead of a hygiene factor.
Want the full report? Read the complete 2026 Retail Report: Retail AI Adoption Outpaces Consumer Trust for the full review-influence data, credibility concerns and how AI is changing product research.
Methodology: Alchemer’s Research Solutions team surveyed 1,002 U.S. shoppers across age groups, genders and shopping channels about their retail experiences and research habits in 2026.
FAQ
Q: How many shoppers read reviews before buying?
A: 70.2% of shoppers read reviews before buying, and nearly half call them very or extremely influential, according to Alchemer’s 2026 Retail Report.
Q: Do shoppers think online reviews are fake?
A: Many do. 42% suspect reviews are fake or AI-generated, 40.6% suspect they’re paid or incentivized and 32.5% believe brands manipulate them.
Q: What is the most influential review source?
A: Google Reviews at 51.6%, followed by Amazon Reviews (40.9%) and reviews on the retailer’s own website (37.1%), per Alchemer’s 2026 data.
Q: What makes a review credible to shoppers?
A: Specific product-quality detail. Against widespread skepticism, substantive commentary carries more weight than the star rating or the total number of reviews.