GPT-4 could also convert observation records obtained by photography into semi-quantitative measurement data (Fig. and). When instructed to estimate the turbidity of the reaction mixture on a scale of 0 to 5, turbidity estimates were returned for each time point. Human observations indicated turbidity began when observation started (1 s, turbidity: 1) and reached a maximum level after approximately 700 seconds. On the other hand, GPT-4's observations showed a gradual increase in turbidity over about 2500 seconds, reaching a level of 4 to 5. The general trend was similar to humans but was slightly different.