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To reach their fitness goals, they hired ‘CoachGPT’

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Mr Daylen Yang taking part in a race in Cascade Locks, Oregon, on April 12.

Mr Daylen Yang taking part in a race in Cascade Locks, Oregon, on April 12.

PHOTO: JORDAN GALE/NYTIMES

Chris Cohen

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UNITED STATES – Two months ago, I uploaded more than a decade’s worth of running data into the artificial intelligence (AI) chatbot Claude and asked for help writing a half-marathon training plan. “The good news,” it told me, “is your engine is enormous.”

This is the kind of flattery AI is known for. I’m not even in my run club’s fast group. Still, watching Claude scan the GPS (global positioning system) files I had logged on the fitness app Strava and identify the highlights – a marathon personal best, a rugged ultra-distance trail run – felt nice.

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