Quick check shows accuracy within 0-5 kuai, depending on the distance.
Most are accurate, depending on the driver of course.

You can define cross roads with a ',' huang shan lu, xi er huan
from hefei train station
To heping lu, mingguang lu
Estimated Trip Price
Distance: 3.3 km
Duration: 9 mins
Start Price: ¥8.11
3.3 km x ¥1.22 : ¥3.95
Waiting time (0 min): ¥0.00
Overall price (estimation): ¥12.06