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Harry Guinness

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

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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

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

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

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

11 min read


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A Zap with the trigger 'When I get a new lead from Facebook,' and the action 'Notify my team in Slack'