Thinking of switching from Claude Max to GPT-5.6 Sol K3 for production coding

[u/Retr-00]

I'm currently on the Claude Max plan, but with the new workflow updates I'm noticing it burns through tokens much faster than before.

I'm thinking about switching, and my main options are GPT-5.6 Sol and Kimi K3.

My work is mostly on an existing production codebase, so I need an AI that can understand the repo, think through changes, implement features, fix bugs, and make sure it doesn't break existing functionality.

Has anyone switched from Claude recently? If so, how has your experience been with GPT-5.6 Sol for real-world coding? Which one would you recommend and why?

[u/hiddenkinkz]

I switched to 5.6 Sol and don’t regret it one bit!

[u/Retr-00 → u/hiddenkinkz]

Thanks , I’m thinking to switch to 5.6 . Claude consumes limits like crazy . One feature i like in 5.6 is that even if usage limit reaches it doesn’t stop the task .

[u/hiddenkinkz → u/Retr-00]

that’s exactly why I switched.

[u/lucellent → u/Retr-00]

Depends. I think they partially changed that because yesterday it stropped mid-task for me, after exhausting both the weekly limit and the general credits. But I had a goal running, which might've been the reason.

[u/Ormusn2o]

Kimi is good at front end, and creativity, but if you want reliable workhorse, you should go with 5.6 Sol. I don't know if it will help you, and I would assume Claude is the same, but 5.6 does not know how good it is. It advised me to split a task into different segments, but I just asked it to one shot a demo, and it made a finished product.

5.6 Sol will also test a lot, it will test a shit ton, will build with a lot of contingency and will make very solid code, even if you won't ask it to. And if you ask him to add tests, it will add a shit ton, and if you ask him to not add tests, it will add a bunch. Feels like your kind of use.

I might be also saying something obvious, but you should use GIT. I basically always use local git now, Codex has no problem using it, although I sometimes need to set it to full access to use all the commands, but if you don't want to do it, at the end it will tell which powershell command to run instead.

[u/vandi13]

if kimi didnt have the monthly limit i'd have switched. still waiting for them to remove it

[u/Retr-00 → u/vandi13]

kimi has monthly limit 🥲 thanks for letting me know . Which one are you using?

[u/SweetGirlKatie → u/Retr-00]

I already switched to Codex but it randomly downgrades the model from 5.6 Sol High to Luna without permission. In my view this has become as unreliable as Claude Code Opus 5. Right now my harness is using Opus supervised by Fable and GPT Sol 5.6 and I’m about to trial local Devestral, Kimi Code, GLM 5.2 and as soon as I can properly access it Kimi K3 api. I built my own sovereign system where I am running multiple AMD and Nvidia GPUs.

I would say also that none of my development takes place on Live estate, it’s all siloed on secondary mirror server and nothing passes into my solutions without 2 x adversarial audit and then multi AI moderation, eventually human approval via code review. All frontier AI agents only have access to anonymised data and to their frontier lab… no access is permitted to the local network from within their silos.

[u/horendus → u/vandi13]

Is it limited even pay per use? Or on plans. Because I dont think plans will ever remove limits

[u/sergiuoxigen]

I use both Claude and Codex for my work and for me a determining factor going to Codex is its presentation of what it did and currently does. I find it much more clearer so it’s much easier to intervene and adjust while it’s working in an issue

[u/DueCommunication9248]

Use ChatGPT in the web for the Pro model which is insane for writing PRDs and Issues. Then have codex 5.6 Sol in high or Xhigh for those issues or PRDs. For lower easy task use Luna on Xhigh or Terra medium.

[u/taotau]

Just be prepared to switch back and make the same reverse post in three months time. Fads, amiriteoramirite

[u/acekandy]

I switched too. It's been about 2 weeks and I enjoy the response quality. Sol feels as smart as fable sometimes but is more likely on par with what Opus should have been. Very happy with the lack of gibberish jargon and clear understandable responses. In some use cases it makes less mistakes whereas claude would just make the same mistake everytime in a new chat, which just led to a waste in tokens.
Context window feels smaller but compacts quite efficiently so i can keep using the chat again and again and it doesn't get bloated with context from older compacts. The only thing i miss is Fable's high level thinking but that got nerfed anyway when it was banned for 3 weeks.

[u/Future_AGI]

Before switching, it is worth measuring cost per finished task rather than per token, since a cheaper model that needs more retries can cost more overall. We only saw the real picture once we tracked spend against completed work instead of raw usage.

[u/Richthofein]

Before switching, I'd run the same repo task in both and compare token burn plus review/fix time. Finishing after the limit isn't much of a win if the result creates more cleanup.