Link-building hasn’t gone away in 2025, but it certainly has evolved.
Backlinks are still major trust signals for search engines, and they also influence the LLMs that power ChatGPT and Google’s AI Overviews.
That means building backlinks can work double duty for you and improve your SEO and GEO (generative engine optimization).
The caveat is that the concept of what makes a trustworthy backlink has changed.
Trust is no longer about counting links; it’s about verifying content quality, relevance, and accuracy. LLMs don’t evaluate link volume or assign authority through a link graph.
However, backlinks still serve as trust signals for LLMs.
How is that?
It’s the context that matters, not the link itself. If a credible domain mentions your brand and links to your website, it’s still a sign of trust, but it has to do with semantics instead of hyperlinks.
This also explains why unlinked brand mentions can improve your credibility on AI platforms, while traditional search engines require a link to infer authority.
In this guide, we’ll teach you what makes a backlink trustworthy to search algorithms and LLMs.
Here’s what we’ll cover:
What Google still values in backlinks
How AI models interpret link trust
The difference between high-trust and low-trust backlinks
How to build or buy trustworthy backlinks in 2025
What Google Still Considers Trustworthy
Google’s search algorithm has undergone countless refinements over the years, especially recently.
While keyword matching and link counting remain at its core, the algorithm has incorporated NLP (natural language processing) and machine learning elements through RankBrain, BERT, and MUM.
Moreover, LLMs and search algorithms share a symbiotic relationship where they learn from one another.
To keep it short, AI models influence how search systems utilize semantics and natural language understanding, so the lines between SEO and GEO will continue to blur as time goes on.
As a result, certain types of trustworthy backlinks appeal to both LLMs and search algorithms, like brand mentions, contextually relevant citations, and high-quality resource links.
Here’s an overview of the main trust factors Google uses for backlinks:
E-E-A-T
Google’s concept of trust is intrinsically linked to its E-E-A-T (experience, expertise, authoritativeness, and trustworthiness) quality rater system.
While this system began as a set of criteria for Google’s team of quality raters, its elements are now embedded in the algorithm. Thus, backlinks that exhibit high E-E-A-T characteristics will perform better on Google.
Here’s how to incorporate E-E-A-T characteristics into your backlinks:
Experience – A backlink showcases experience whenever the linking domain has first-hand knowledge of a topic. An example would be an award-winning financial planning website linking to your guide on estate planning. They clearly have experience with the topic, so them providing a link to your content is a strong sign of trust.
Expertise – For your link profile to demonstrate expertise, you want to generate backlinks from related domains that have topical authority. That means that they’re topically-aligned with your site and produce consistent, high-quality content on similar subjects.
Authoritativeness – This is all about who is linking back to your website. Authoritative entities include government agencies, educational institutions, recognized organizations, and well-known brands.
Trustworthiness – The last letter in the acronym is an amalgamation of the other letters. It represents how Google considers all the previous factors (experience, expertise, and authoritativeness) to determine if an entity is trustworthy or not.
Source transparency and brand consistency
Besides E-E-A-T, Google also values source transparency, which refers to how open you are about:
Who created your content (author biographies and social profile links)
Where you got your information (external links and citations to trusted sources)
Why it was published (commercial or educational purposes)
The more transparent you are with your content, the more likely Google is to trust you.
Brand consistency is also important, which ties in with topical authority and expertise. Google wants to see that you’re consistently publishing high-quality content and keeping your audience engaged.
Legacy metrics
There are some classic SEO metrics that can still help you evaluate the trustworthiness of a domain, such as:
High organic traffic shows that actual users engage with a domain’s content, which is a trust signal for search algorithms and LLMs.
Third-party metrics like Domain Authority (DA) and Domain Rating (DR) aren’t entirely obsolete. For the most part, they’re still an effective way to gauge the authoritativeness of a domain. Most sites that have high DA/DR scores have strong editorial standards, so they’re still useful proxies for evaluating trust.
Technical SEO underpins every successful link-building campaign, and it doesn’t matter whether you’re optimizing for organic search or LLMs. If your pages aren’t properly crawled and indexed, no search algorithm or AI model will be able to access your backlinks, let alone understand their contextual relevance.
How AI Systems Interpret Link Trust
AI models take a contextual, entity-based approach to link trust. Here’s an overview of how it works:
Semantic context – LLMs understand the meaning behind words, and they pay attention to how other websites describe you.
Entity relationships – AIs use entity recognition to identify brands and connect them to entries in knowledge databases. In terms of link-building, AIs evaluate who links to you, both in terms of authority and relevance.
Reputation and brand sentiment – LLMs are able to synthesize online information regarding a brand’s reviews, community sentiment (what people are saying on forums and social media), and online mentions to see if it’s trustworthy.
Connection to E-E-A-T principles – AI systems and Google’s E-E-A-T value many of the same trust signals, especially in terms of editorial quality, relevance, and subject matter expertise.
High-Trust Backlink Examples
Next, let’s look at some examples of high-trust backlinks so that you can get a feel for what you should target.
High-trust backlinks are things like resource links, product recommendations, and guest posts on relevant, authoritative websites.
Here’s an example from Search Engine Land.
It’s a guest post written by Claire Taylor, co-founder of TU Marketing. She contributes a lengthy, helpful post about building authority, and provides a link to her digital marketing agency at the end:
It’s a great example because it’s a trustworthy backlink to both search engines and AI models. Not only is it contextually relevant, but the link also appears in her author bio, which adds further credibility by associating the content with a real person who has experience and credentials (E-E-A-T signals).
Besides guest posts, industry and product round-ups are another great way to build high-trust backlinks, like this example from Hubspot:
Remember, though, the context matters, so you want to be included in ‘best of’ lists.
How to Build (or Buy) Trustworthy Backlinks
Whether you’re building or buying backlinks in 2025, the recipe for success lies in the right evaluation criteria.
Putting everything together that we’ve covered so far, here’s how you should appraise your backlink opportunities:
Use DA/DR scores as a baseline, but not as an end-all, be-all metric
Check organic traffic and growth trends to avoid building links from dead websites
Ensure topical relevance and alignment with the linking domain
Check editorial standards and content quality to align with E-E-A-T signals
Verify the presence of structured data like semantic HTML and schema markup (this helps LLMs understand context)
If a link prospect has all or most of these components, it’s a viable target for your campaign.
Wrapping Up: Trustworthy Backlinks in 2025
Link trust has evolved from PageRank and quantity-based signals to semantic context and entity relationships.
Both Google’s traditional algorithm and popular AI models like ChatGPT value relevance and editorial quality, so your link-building campaign needs to adapt.
Do you need professional help with your link-building campaign?
We focus on trust-layer alignment, where we pair traditional authority metrics with modern E-E-A-T and entity-based factors so that our backlinks appeal to algorithms and AI models.
Don’t wait to get in touch with our team to develop the perfect link-building strategy for your needs.