Harry Guinness is a writer and photographer from Dublin, Ireland. His writing has appeared in the New York Times, Lifehacker, the Irish Examiner, and How-To Geek. His photos have been published on hundreds of sites—mostly without his permission.
Harry Guinness
Harry's articles
By Harry Guinness
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15 min read
By Harry Guinness
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14 min read
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More from Harry
App tips
What are OpenAI o3 and o4?
If o3 and o4 live up to OpenAI's claims, they could be the start of another leap in just how useful LLMs can be.
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The 4 best AI website builders in 2025
By using artificial intelligence, these website builders can streamline everything from designing a site and organizing your content into the appropriate pages to actually getting it online.
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What is Agentic AI? And how you can start using it
Agentic AIs are the latest attempt to create a framework for what these tools would look like and how they could safely operate.
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OpenAI models: Every model and what it's best for
This is your complete guide to all of OpenAI's major models. We'll look at what each one is good for, how much they cost, and how to make the most of them in your work.
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