Should I just use heavy for every run to get the best results?

Q: Should I just use heavy for every run to get the best results?

Usually not. Heavy thinks longest on every step, so it's slower and more expensive ($2.00 / $4.40 per 1M tokens versus $1.60 / $3.40 for Flash). The docs say Heavy "is rarely the right default". Use auto or flash for most runs and send only the hard ones (subtle bugs, large builds, high-stakes changes) to heavy . Learn more Choose a tier SuperCosmos models

FAQUpdated November 2, 2026

Usually not. Heavy thinks longest on every step, so it's slower and more expensive ($2.00 / $4.40 per 1M tokens versus $1.60 / $3.40 for Flash).

The docs say Heavy "is rarely the right default". Use auto or flash for most runs and send only the hard ones (subtle bugs, large builds, high-stakes changes) to heavy.