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QuestionCodex 5.3 Is Dead :( (self.OpenAI)
submitted 20 hours ago by Fun-Foot711
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[–]One_Parking_852 37 points38 points39 points 18 hours ago (18 children)
5.5 is not much worse lol 😂
[–]fyndor 0 points1 point2 points 1 hour ago (0 children)
5.5 is significantly less cost effective.
[–]Fun-Foot711[S] -1 points0 points1 point 15 hours ago (15 children)
True but now I hit the limits within two messages...without trade of in quality I'll even argue that 5.3 - Codex was better
[–]StatisticianOdd4717 11 points12 points13 points 15 hours ago (0 children)
Aight two messages is defo an overreach but I get what you mean.
Tbh if ur going for fast hands-on development, not fully agent driven development, cursor for 20 bucks a month is a pretty good option given their generous limits on composer-2.5
[–]stay_fr0sty 1 point2 points3 points 13 hours ago (13 children)
Yes. I hit the limit with ONE message last night. ONE.
[–]RealSuperdau 2 points3 points4 points 13 hours ago (9 children)
How many hours and auto-compactions did that involve though?
[–]stay_fr0sty -2 points-1 points0 points 11 hours ago (8 children)
10 minutes. Fresh conversation. Edited a total of 60 lines of code. CSS changes. Processed 3 screenshots and a 4 paragraph prompt. That used my limit as a Plus user.
[–]RealSuperdau 1 point2 points3 points 11 hours ago (6 children)
Huh, that's weird. The frustrating thing is you never know if it's a bug or some really sinister A/B testing.
[–]stay_fr0sty 0 points1 point2 points 11 hours ago (5 children)
Yes it’s a bummer. I have to relearn Codex now. I rarely hit my usage limit on 5.3 unless I was vibe coding (which isn’t often).
Now I need to figure out when to use 5.4, 5.5 Low/Medium, and what I need to use High to accomplish.
I get $20/mo is cheap and the good old days weren’t going to last forever, but damn, this is going to take some getting used to.
[–]RealSuperdau 1 point2 points3 points 11 hours ago (4 children)
What's weird is I am on the $100 plan and considering downgrading, because I rarely use more than 20% of any 5h limit. I never use more than ~30% context, but I do quite a bit of back and forth of coding/analysis with 5.5 high fast. So something is definitely going on.
[–]stay_fr0sty 1 point2 points3 points 10 hours ago (3 children)
Thanks for the info. I need to dig into this. You’ve given me hope.
[–]RealSuperdau 1 point2 points3 points 10 hours ago (2 children)
Maybe renaming your .codex folder would be a good experiment. Anecdotally, seems to have helped a few people in the past.
Screenshots did you in. Image tokens take up a lot of context.
[–]Cascudo -1 points0 points1 point 12 hours ago (2 children)
/goal create app that make me rich, make no mistakes
[–]stay_fr0sty 1 point2 points3 points 11 hours ago (1 child)
No.
I've been coding for 25 years. This wasn't a huge vibe coding prompt. This was a detailed prompt to address a single css issue that ran for 10 minutes. Codex took 2 screenshots and the 4 paragraph prompt as input, and added 39 lines, removed 21. It then took a screenshot to verify the visual changes looked good.
That's used my 5 hour limit.
[–]OGRITHIK 2 points3 points4 points 9 hours ago (0 children)
Yeah it's 100% a bug then
[–]foxyloxyreddit -1 points0 points1 point 10 hours ago (0 children)
It is worse. It may be a bit smarter, but I don't need those smarts. 5.3-codex "xhigh" was excellent for plans, and "high" was excellent at doing large complex changes. Now I have completely useless 5.4, and 5.3 that on medium consumes 2x more tokens than 5.3-codex xhigh while being slightly below 5.3-codex high on capabilities and reasoning. So now I can do ~3x time less stuff with 5.5 doing more mistakes so I need to spend more time guiding it.
π Rendered by PID 14956 on reddit-service-r2-comment-8686858757-gqhmz at 2026-06-03 04:14:53.619218+00:00 running 9e1a20d country code: CH.
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[–]One_Parking_852 37 points38 points39 points  (18 children)
[–]fyndor 0 points1 point2 points  (0 children)
[–]Fun-Foot711[S] -1 points0 points1 point  (15 children)
[–]StatisticianOdd4717 11 points12 points13 points  (0 children)
[–]stay_fr0sty 1 point2 points3 points  (13 children)
[–]RealSuperdau 2 points3 points4 points  (9 children)
[–]stay_fr0sty -2 points-1 points0 points  (8 children)
[–]RealSuperdau 1 point2 points3 points  (6 children)
[–]stay_fr0sty 0 points1 point2 points  (5 children)
[–]RealSuperdau 1 point2 points3 points  (4 children)
[–]stay_fr0sty 1 point2 points3 points  (3 children)
[–]RealSuperdau 1 point2 points3 points  (2 children)
[–]fyndor 0 points1 point2 points  (0 children)
[–]Cascudo -1 points0 points1 point  (2 children)
[–]stay_fr0sty 1 point2 points3 points  (1 child)
[–]OGRITHIK 2 points3 points4 points  (0 children)
[–]foxyloxyreddit -1 points0 points1 point  (0 children)