The Dispatch
Daily · Synthesized · Opinionated
aiWednesday, April 29, 2026·3 min read

AI Carb Counting Inaccuracies Exposed in Study

Research reveals AI models struggle to consistently estimate carbohydrate counts, posing risks for diabetes management

Top view of a glucometer and fresh Brussels sprouts on a pink background promoting health.
Photo: Nataliya Vaitkevich

A recent study has highlighted the inconsistencies in AI-powered carb counting, a crucial tool for diabetes management. The research, which involved submitting 13 food photographs to four leading AI models over 500 times, found that each model returned different carbohydrate estimates for the same photo across repeated queries. This variability has significant implications for individuals relying on these models for insulin dosing.

What happened

The study found that every model returned different carbohydrate estimates for the same photo across repeated queries. The degree of disagreement varied greatly among the models, with some clustering below 5% for most images and others exceeding 10-20%. The worst-case scenario was a paella photo, which had estimates spanning from 55g to 484g, a 429g range equivalent to 42.9 units of insulin.

The research also identified food identification errors in 8 of the 13 test images. For example, one model called a Bakewell tart a "Linzer torte" in 100% of queries, while another called it a "jam tart" or "cake bar". These misidentifications can have a modest to substantial nutritional impact.

Why it matters

The inconsistencies in AI-powered carb counting have direct implications for anyone using these models in diabetes apps. The variability in estimates can lead to incorrect insulin dosing, potentially causing hypoglycemic emergencies. The study's findings suggest that the current state of AI-powered carb counting is not reliable enough for diabetes management.

ProsCons

+ Pros
  • AI models can provide quick and convenient carb estimates
  • AI-powered carb counting can be more accurate than manual counting for prepackaged foods
  • AI models can learn and improve over time with more data and training
Cons
  • AI models are inconsistent in their carb counting estimates
  • AI-powered carb counting can be less accurate for non-prepackaged foods
  • AI models can make food identification errors, leading to incorrect estimates

How to think about it

When considering the use of AI-powered carb counting for diabetes management, it's essential to weigh the pros and cons. While AI models can provide quick and convenient estimates, their inconsistencies and potential for error must be taken into account. It's crucial to understand the limitations of these models and to use them in conjunction with other methods, such as manual counting or consulting with a healthcare professional.

FAQ

What is the current state of AI-powered carb counting?+
The current state of AI-powered carb counting is not reliable enough for diabetes management, with inconsistencies in estimates and potential for food identification errors.
Can AI models be used for carb counting in diabetes management?+
AI models can be used for carb counting in diabetes management, but their limitations and potential for error must be taken into account, and they should be used in conjunction with other methods.
How can I improve the accuracy of AI-powered carb counting?+
The accuracy of AI-powered carb counting can be improved by providing more information, such as ingredient lists and weights, and by using models that are specifically designed for carb counting.
Sources
  1. 01He asked AI to count carbs 27000 times. It couldn't give the same answer twice
  2. 02I Asked AI to Count My Carbs 27,000 Times. It Couldn’t Give Me the Same Answer Twice. | Diabettech - Diabetes and Technology
  3. 03Can AI count your carbs? – BETTER