Today I’ve been putting Opus 5 head to head with Sol and honestly the difference is stark. So I started out on just the $20 plan and the first thing I noticed was that running Opus 5 on Extra reasoning was burning through my weekly limit about as fast as Sol on High did on my 5X Codex Pro plan (20$ vs 100$, lol). As for the actual comparison: For planning Opus 5 is way more goal-oriented. No fluff, just a straight coherent plan and it actually keeps you involved the whole time you’re designing it, which for me is a good thing. After using Sol since release my AI workflow and project rules had gotten so complicated I’d basically lost track, I didn’t really know where things stood anymore. Opus brought me back into the project, now I actually know what’s going on. Sol on the other hand just overengineers everything, runs in circles, and loses me completely along the way and unfortunately it produces code I can barely look at without needing to go breathe some fresh air. To be fair Sol is still a genuinely strong model, it’s just better as a reviewer than a planner. There it’s excellent. Opus 5 walks you through its reasoning and stays concrete instead of drifting into pseudo language. Like, I kept catching myself typing “ELI5” at Sol after a long answer, and I’d like to think I’m not that dumb. With Opus I actually read the whole answer and understood it. So yeah, Sol produces these plans that sound impressively sophisticated, good enough to break into the Pentagon, but by the time it gets there you’ve blown through your weekly limit. I have upgraded to 5X CC and downgraded to 20$ Codex so I can still use Luna / Terra for small, well-defined implementation packets. submitted by /u/basicpreset
Originally posted by u/basicpreset on r/ClaudeCode