Fitbit Air gets LLM-powered workout auto-detection upgrade

Google upgraded Fitbit Air with a new motion-detection model and LLM reasoning that combines location and routine data with movement, boosting activity classification accuracy by 200% and halving missed workouts.

• Workout classification accuracy improved by 200%
• Missed workouts cut in half
• LLM combines movement, location and routine data
• Better detection for swimming and weight training