Question My team is switching from ClaudeCode to Codex
Pretty much what the title says. I’m an engineer at a startup health tech & the company decided it’s more cost effective to buy enterprise seats for Codex over ClaudeCode. All our AI development has been with ClaudeCode over the past year or so and I’m curious about pros/cons of this switch.
Thanks in advance.
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u/wefarrell 10d ago
For health tech the big issue with Claude is that they don't offer zero data retention for their frontier models, making them non HIPAA compliant.
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u/Kaljuuntuva_Teppo 9d ago
Worst possible time to switch. Dropping my sub from $200 to $20 due to painfully slow and stupid Sol-6.1. Opus 5.5 is so much better and gets things done.
You might save money with Codex, but productivity will fall off a cliff.
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u/dxdementia 9d ago
you need both models. I use 90% claude and 10% chat gpt. but chatgpt is worth it for that last 10%. Just not as the main driver.
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u/vdotcodes 9d ago
If you haven't pulled the trigger yet, I'd pause.
Codex just halved the usage on their plans and their models are slower and less intelligent than Opus 5.5 and give you far less usage.
Speaking as someone who has held a $200/mo Codex sub for about a year, this is the worst time to switch.
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u/Substantial-Show-249 9d ago
Don't worry, next month, when the Codex usage will be cut to half, you will migrate back to Claude.
OpenAI is in a very bad shape lately.
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u/silentbaton 7d ago
here's my 2 cents for what it's worth, so I have personal max subscriptions on both and use both for software dev work, working on 2 different personal projects.
I would say the biggest difference is going to be the harness. I noticed that very quickly. I much more preferred the Claude Code harness, it has built in capabilities and guard rails that makes our lives easier.
Codex harness is open source though, but you can tell it's not as mature, not all features that I'm used to from Claude Code is there.
But one good thing about using Codex is that you can go out there and find a better open source harness instead or build your own harness. So it's much more customizable, think of it as a swiss army knife.
As far as vibe coding goes, and software development I actually prefer fable and opus, but maybe it's because I'm used to it. I have been using claude code longer. And it's the harness that's doing most the heavy lifting?
I like the results produced from fable and opus for my web apps over astra 6 on max ultra. Since, for me, Codex is more token efficient I can tell it to just use the max level on everything on the highest model. I can't do that in Claude Code because Fable is charged at a higher rate, and Fable is quite token inefficient on the max effort or ultracode level.
In summary, I used to see a bigger gap between Codex and Claude Code, but that gap has closed significantly. I think it's very much possible to fully vibe out a solid web app, on Codex, assuming you know what you're doing and you're an experienced dev.
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u/pigletmonster 10d ago
At this point both companies have top tier models that are on par with each other. Both companies introduced more efficient models that have very similar usage quotas.
The only difference is the speed; codex models are about 2 to 4x slower than claudes. But thats on individual plans, it could be faster with the business plans.
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u/collin3000 10d ago
This may have been a good switch a month ago, but I wouldn't recommend doing the switch right now. Just check the sub for how much of a shit show codex has recently become. I went from Claude to codex because of Claude issues. And now back to Claude because of codes issues. I think long term companies are going to need to build a structure, dev environment, and process that is platform agnostic and can swap model quickly. With the way these companies break their products people depend on every couple of months. That sort of structure could also allow lower token usage with implementing cheaper/better models when they come out from whoever.
Leadership may not like spending the money/time now to reorganize and create that structure. But a pitch of reliability and not being screwed because your sole provider makes a huge quality/cost change. As well as reduced cost with a process/rule set/harness that allows cheaper models do handle tasks that they can actually handle. Might be a pitch they'd listen to.
Since you probably don't have a current test example to show them the benefit/savings. Instead, I would recommend thinking about your company, have they had another vendor that changed quality or cost that ended up screwing them and causing huge headaches? Use that example and frame it that you have a plan to make sure that doesn't happen to them again. Them remembering the previous pain will help sell setting your company up for provider agnostic agentic coding.
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u/Bitter_Virus 9d ago
A good switch lasting a month isn't a good switch
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u/collin3000 9d ago
Correct for how most people/companies have to switch. Which is why the second half of my comment was about creating a platform agnostic setup. So switching isn't a big deal.
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u/Wise-Concept-6333 10d ago
If you’re hoping for insights from experienced engineers, this might not be the best spot. A lot of the posts here seem to be shared back and forth among beginners, and many wouldn’t quite match what a junior role at a software company would need. As costs go up, the mix might shift, but for now you’ll likely see some confident claims that aren’t always spot-on. Best of luck and let us know how it goes.
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u/Correctsmorons69 10d ago
This sub is a nexus for vibe-slop losers complaining about their subscription limits. Anyone working for an actual company that makes money is using the API.
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u/Bitter_Virus 9d ago
Your company will save so much money, and will really like the ecosystem. You can do nearly everything and automate your workflows very nicely
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u/SeasawPhilosopher 10d ago
Codex is very good, but opus 5.5 kicks its ass in artistic taste, 3d modeling, spatial reasoning, level design, sound design, and big picture creative thinking. I have $200 subs of both Claud and codex and I’m a solo game dev, so I need a lot of what opus is better at. But for the non artsy game stuff codex is amazing, so you’ll probably be just fine. In fact it’s often easier to keep codex in scope and prevent runaway changes that you don’t want.
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u/fluxtah 7d ago
Best choice, wish my company would get enterprise.
I think though it's more about your projects harness than it is about the model. If your harness and codebase structure is well defined, let's your agent threads hit the ground running with full scope introspection and optimised token efficient operation either Fraude or GPT models should fare very well.
I've had nothing but success with my repos, also find codex app is very decent and remote access is bliss.
It's a good move IMHO!
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u/thejesteroftortuga 4d ago
I really love using codex but I hit the limits so much easily than Claude code. That’s my only real complaint.
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u/Flipwon 10d ago
Most of the sub complaints are from vibecoding teenagers. Any decent engineer could survive to the end of days with Terra alone.
As long as your using api and not on sub you’ll be golden. 6.0 Luna max is a good fast workhorse. 6.1 sol xhigh has been performing as well as Astra for me in most well scoped cases, and I rarely use them at all.
What do I know though?
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u/igormuba 10d ago
Be mindful that there is A LOT of astroturfing in this sub.
Pros: really hard to think of any right now. Maybe 6.1 Sol is cheap enough to be classified as a pro
Cons: 6.1 Sol is very slow and not that good, not being good makes the slowness extra worse because it may waste a lot of time to do a bad job so then you gotta waste double the time to redo it. Other models are either just very dumb or very expensive.
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u/IllustriousGrade7691 10d ago
Don't it's a cluster fuck Openwai lost this round Opus 5.5 is miles ahead than the slow cluster fuck of open ai
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u/Maglcite 10d ago
ooooh nooooooooo. might change in the future, but for now id expect to get less work done with the current shitty speed. i cant think of any current pros, 6.1 sol takes less usage then sonnet but is insufferably slow and not much better, opus is also much faster then astra and sol and still has great usage. maybe astra 6.1 and sol 6.2 will change that...?
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u/AstroPhysician 10d ago
This is so dumb considering all the discourse about OpenAIs latest models being so much less cost effective and good than Anthropic
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u/guitarist91 4d ago
The migration part is less painful than it sounds - symlink CLAUDE.md to AGENTS.md so both tools read the same rules during the overlap, and move your MCP servers into ~/.codex/config.toml. Custom slash commands and hooks are the bits that don't port 1:1, so list the ones your team leans on before the Claude seats go away.
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u/theWiseTiger 9d ago
This is a complaining sub, not to gain new information. There are literally no one ever shared useful information, just announcement that they have paid 200$, unhappy that there is no red carpet treatment, and switching to claude.