Experiences with Claude Max 20x Plan and Opus Limits

I’m currently on the Max 20x plan and I’ve had no issues using Opus extensively. I've run sessions lasting up to 3 hours and only saw the 50% usage warning towards the end. I primarily use ultrathink for planning and haven’t needed to run parallel agents or multiple Claude Code instances. In my view, the 5x plan is really about unlimited Sonnet use in a single session, while 20x offers more freedom to use Opus in one session without limits.

I used to hit limits on 5x pretty fast, but since switching to 20x, it feels like I have way more leeway. I’ve gone for hours using Opus, even while running multiple projects, without a limit warning. Definitely worth it if you need to maximize your output.

I did hit my limits on the max 20x today, but I had Opus running non-stop for about 8 hours across several projects with several agents. My advice? If you're pushing it that hard, be ready for those warnings!

Yeah, I found the limits to be quite generous on the 20x plan. I often run Opus without issues. When I was on the 5x plan, I'd hit limits several times, but with the 20x, I hardly see any warnings. It's definitely a step up!

I do about 1.5 hours per Opus session, and I believe the session resets every 5 hours. That gives the 20x plan plenty of time to work without interruptions, at least for me.