Here's the dollar cost per task and performance on BenchCAD for Astra and OpenAI's internal model:
Astra (low): $0.44 per task; score = 14%
Astra (medium): $2.73 per task; score = 31%
Astra (high): $5.11 per task; score = 41%
Astra (xhigh): $6.67 per task; score = 45%
Astra (max): $11.05 per task; score = 59%
Internal model (low?): ~$11 per task; score = ~76%
Internal model (medium?): ~$23 per task; score = ~83%
Internal model (high?): ~$34 per task; score = ~86%
Internal model (xhigh?): ~$37 per task; score = ~88%
Internal model (max): not pictured
*Astra data taken from BenchCAD's website; internal model data extrapolated from same by Astra.
**It's possible that the four internal model reasoning levels are instead medium through max (not low through xhigh).