Opus 5.5 vs GPT-6 Sol: quality against cost per task

Haider. @haider1Originally posted 2026.09.23

Open original on X

i did some digging into Opus 5.5 vs. GPT-6 sol benchmarks opus = better quality sol = 7.8x cheaper per task if time matters, opus wins. if raw speed matters less, sol is much better value though this probably affects usage credits more than subscriptions, since i still burn through codex limits way faster than CC