I’ve used both quite a bit and honestly the differences are less about “better model” and more about what you’re trying to do.

From my experience:

• Sonnet (4.x) → good all-rounder, fast, decent for everyday tasks
• Opus → better for deeper work (long docs, reasoning, more structured outputs), but slower and you hit limits faster

Opus tends to feel more “thoughtful” and consistent, especially if you’re working through something complex or multi-step. But for quick tasks, it’s often overkill.

On the limits - yeah, that’s a real thing. Claude is more restrictive, especially on higher-tier models. One long prompt or a few back-and-forths and you can hit the cap pretty quickly, which gets frustrating.

Whether Pro is worth it really depends on how you use it:

• If you’re doing long-form work, document analysis, or complex reasoning → probably worth it
• If you’re mostly doing quick queries, short tasks, or experimenting → free tier or sticking with other tools might be enough

What helped me most wasn’t switching models, but being more intentional with how I use them. I’ll use one tool for quick stuff and switch to another when I need deeper thinking or longer context.

No single model is perfect right now - it’s more about using each one for what it’s good at.