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
•
19 min read
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More from Harry
App tips
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.
By Harry Guinness
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10 min read
Best apps
The 6 best chatbot builders in 2025
If you want to jump in and build a chatbot for your business or just for fun, there are a lot of different kinds of chatbot builders to choose from.
By Harry Guinness
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13 min read
App tips
What is ChatGPT agent?
Instead of being a generative AI chatbot, ChatGPT agent turns ChatGPT into a tool that can take initiative, trigger actions, and handle tasks on your behalf. Here's how it works.
By Harry Guinness
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6 min read
Best apps
The 4 best AI search engines in 2025
From large platforms like Google to new startups, lots of search engines now offer the ability to generate AI-assisted answers.
By Harry Guinness
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11 min read
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