Testing All the AI Models to See Which AI Generated Logo’s are Usable in April 2025

In this post I will share my recent tests to see which AI model can generate the best business logo’s in April 2025. As part of my AI business challenge I’m building an AI Directory Maker and my AI agents needed a good option to generate logos for new AI made businesses (web directories).

A few weeks ago I shared the logo’s I had generated in my Automated AI Directory Maker part 2 update. This post shares a bit more on AI logo generation and which model I chose to use in the end.

AI Logo Generation:

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The Prompt

AI Image Generation Prompt & Example Image

Generating usable AI logo’s requires a perfected prompt. Even the best AI image generation models still tend to be flippant and can over-design if your prompt is too long or contains complicated concepts.

For this test I found that the best approach was to give a short but concise prompt along with an example logo. Without the example logo AI can still generate usable images, but I got a higher rate of success with an example attachment, (note: mileage will vary).

Here’s the prompt I used for the logo’s generated on this page.

Make me a vector logo image for my new directory website which lists Vibe Coded Games.
Make the logo simplistic, containing only one element, black on white background.
Make the logo icon symbolically make sense for an audience who are looking for browser based games.
Return only the image, not the image in some scene.
I attach an image as an example.

… and here’s the example logo I used. Note that I’m in no way trying to copy this random simple logo, but I do want the output to be black and white and simple vector shapes.

The intention of this prompt & image combo is to specify enough detail without over-baking it.

Ultimately this prompt has become a template which I baked in to my AI Directory Builder agent, so it can programmatically generate a logo for each new directory.

Testing Current AI Generated Logos:

Here I’ll test some commonly available models and share the results with commentary. I’ll also include what platform access they have, as if you’re reading this you’re probably interested in AI automation, so you’ll want to use models which are available via API or Local PC ideally, (though it is possible to set up macros to automate browser based generation).

I’m going to include 3 images for each model so you can see a range of different outputs.

Obviously in reality you could spend time tweaking the prompt & re-editing, but just for sheer programmatic one-shotting, here’s what came out of each:

AI Generated Business Logos April 2025

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AI Gen Logo’s: My Picks

Now obviously people aren’t typically using Stable Diffusion to generate a logo, but overall I was surprised at the variety and quality that came out of this test.

Apart from the obvious issues of some AI generators choosing grey backgrounds (e.g. the need to make the background transparent) there were some genuinely usable options.

Most Consistent AI Logo Generators: Ideogram/4o

I was really surprised at the reliability of the quality out of Ideogram and GPT 4o – both reliably put out image files which could be used as-is. I personally would still batch and filter for quality; but they’re not far off.

Most AI Bang for Your Buck: Flux models (Dev1 and Schnell)

A logo is kind of an important business asset, so it’s unlikely you’re going to care if it costs a few dollars worth of API credits to iterate/batch. I add this category because I like efficiency.

The Flux models overall do pretty well across the board.

Every now and again though, they surprise me. Those images there were generated on my gaming PC in a test I’m running to generate tens of thousands of meaningful AI illustrations for programmatic SEO. They cost me nothing to generate as I run this house on solar power!

AI Logo Generators with Most Potential: Gemini Flash 2.0

An excellent logo is more than just an obvious icon and some text. To make a truly superb logo it does take a lot of skill and creative flair. As you can see above, most models fall back to a kind of imitation,(nature of LLMs ofc), but Gemini Flash seems to be better at impactful concise design.

I really look forward to watching the Google model grow.

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Have you had any experience generating logo’s programmatically with AI API’s? Please do share in the comments.

How I’m Programmatically Generating Logo’s with AI

Templatizing the Prompt

I’m using the prompt from this post along with OpenAI’s & Google’s image generation API’s (sadly not the new 4o model, yet) to generate new a new logo for each directory my AI Directory Maker makes.

I have resorted to using this template to generate 10 different logo’s and then prompting a human (me) via Slack to choose which is best.

That is to say, the current set of tools available via API are not really able to create superb logo’s.

I will keep watching this space though as I don’t think it’ll be long until they can, and I expect to be able to switch out the model,(probably without even tweaking the prompt), later and skip the human selection step. I’ll keep you posted!