UPDATE IN 2026:

This is an old post now that still gets some traction, and I feel a responsibility to update it to let people know some other things. I’ll try to be concise:

• My opinion from 2019-2021 was that I respect that the LSI Graph team kept adding features and it seemed an interesting keyword research tool, but that ultimately it didn’t give enough insight to be worth the investment as a standalone paid tool.
• I’ll say that the owner of LSI Graph reached out to me at one point a couple years after this post was first published, and offered me a free trial to check the software out to update my impressions. I did poke around a bit, but the timing was bad and it occurred during a period where I had a lot of life stuff going on. Honestly I didn’t spent a lot of time fully exploring the software. I ended up thanking him for the opportunity, but had to excuse myself because I wasn’t able to devote the time it deserved. None of that was his fault, and it was entirely a sense of overwhelm on my end not to have explored it more thoroughly at that point.
• I think it says a lot that this company has been so open to feedback from users over the years, and that the owner was willing to put his money where his mouth was and try to change my mind. I respect that, and want to highlight that for anyone considering it as a tool.
• If I had another opportunity to check it out like that now I might try it, but otherwise I am not shopping for any changes in my keyword research tools and process. That to say: I only know what my experience was before. I can’t speak to what this tool is like in 2026 and don’t want to give anyone the wrong idea.

I’ve otherwise left the intro of this post as it originally was in 2019:

As an SEO guy I’m always interested in new tools. I got signed up for LSIgraph’s premium account after using the free version several times.

I’d even recommended it in a previous blog post to people looking for latent semantic index keyword tools.

My impressions of it have been mixed, but I’ll say that the folks at LSIgraph have been open to feedback from users — and even me — and that’s a nice thing to see in a tech company.

In the free version you get to enter a seed word and receive a list of related words with traffic estimates. Not a lot of bells and whistles, and honestly this isn’t more information than you’d receive with other free keyword tools such as Ubersuggest. (And Ubersuggest is free straight up — not free for only a limited number of searches.)

I think that’s the biggest thing holding the free version back, really. With other public tools out there that are totally free to use, it’s hard to be competitive when you’re essentially offering the same thing, but 3 searches per day.

But that’s the free version, I told myself. Surely they’re holding back the goods for the premium version, and that must be awesome. So I paid the fee and got access to paid LSIgraph.

What’s different in the paid version of LSIgraph?

These were my initial impressions a ways back:

When you get related keyword results, you get another column next to the traffic estimates that gives each keyword an LSI score to show how related it is to your seed word.

That’s seemed fairly hit or miss.

The numbers are occasionally surprising — not things you would’ve thought of otherwise. Other times I looked at things that struck me as great long-tail keywords and saw no score, while certain words with high scores were tied only to big brands like “Burger King” on a query for burger restaurants. As in, so obvious it’s not useful.

In many cases the conclusions you’d draw with it are the same as you’d draw with any other keyword tool just by looking at traffic numbers and your understanding of context.

Brian Watkins

Brian Watkins is an SEO consultant and writer with over 18 years of experience helping businesses grow through clear, strategic content. He specializes in translating complex ideas into practical, search-driven content that connects with real people.