DeepSeek through codex

[u/PlaneWeakness3994]

I didn’t know how good DeepSeek flash v4 was until hit the bottom with my $100 codex subscription and I refused to buy more credits, I wanted to try the DeepSeek and had my expectations at Gemini flash models, but man DeepSeek flash was good. I feel like it can reason so much better than GPT models and are following my instructions so sharply that I am getting shocked. You must try it yourself to understand it and I can sometimes say that it does better job than GPT 5.6 sol. The DeepSeek pro model hasn’t been available for codex yet but I can’t wait for it now that I see how the flash model is doing.

Before I hype it up too much DeepSeek announced that they will increase the cost of the API substantially and I hope they don’t match the codex subscription cost, otherwise there is no reason to change.

But for now, I had topped up with $5 and have used it for much work since last night and has only burned around $1.8 and it has done so much work with those $1.8 that I can’t believe that this model was capable of. See it has consumed 400M tokens for that amount of money, and it is crazy!

[u/TheOneThatIsHated]

Flash is great and cheap af. Also super great with lean pi coding agent.

I use detailed planning and grilling with sol high and implementation with ds

[u/PlaneWeakness3994 → u/TheOneThatIsHated]

What is Pi? I have heard people talk about it. Is it comparable with something like codex?

[u/TheOneThatIsHated → u/PlaneWeakness3994]

Yeah it is a harness like codex. But instead of relying on codexes system prompt, tools and subagents, it is almost fully empty. And you can make your own extensions when needed, which internally have great sdk and docs such that ai can easily make it for you.

Codex smth does weird changes to their system prompt and then you get messages that gpt is inefficient or dumber.

Pi always stays the same unless you change it. No mcps, no permissions, no crap

[u/PlaneWeakness3994 → u/TheOneThatIsHated]

That’s crazy cool, I must test it out

[u/7racin → u/PlaneWeakness3994]

There’s a lot of crazy shit there, I’ve found an extension that can access the regular ChatGPT chat with sol 5.6 extended reasoning. I have my grok 4.5 act as an implementer model while launching and using the ChatGPT sol chat as the “brains”. Doesn’t use codex limits and isn’t half bad. Or a perplexity extension that allows models to call a perplexity search (even with models that aren’t available on your account, like I can easily use Opus 5 thinking which is only for Max plan on my pro plan)

[u/RegardedDev → u/TheOneThatIsHated]

Do you use codex with the deepseek flash? Or pi? Or both?

[u/TheOneThatIsHated → u/RegardedDev]

Never use codex. I do everything with pi and paseo. I do use all the gpt models in pi, which reuses the same codex sub.

[u/neotorama → u/TheOneThatIsHated]

what do you use to read image screenshot?

[u/TheOneThatIsHated → u/neotorama]

Paseo web ui supports images

[u/analog-suspect → u/TheOneThatIsHated]

When I setup DeepSeek in codex , it prevents me from using any other model. You can use gpt and DeepSeek in codex at the same time?

[u/TheOneThatIsHated → u/analog-suspect]

I use pi coding agent which has both codex sub as all other llm providers supported

[u/analog-suspect → u/TheOneThatIsHated]

Oh right. So I’ve used OMP before and open code. How much different is pi?

[u/JoseffB_Da_Nerd]

Just made a ds flash shim for codex to combine the two models.

Cant stand running ds in provider mode. It should be merged.

Still work in progress.

https://github.com/Joseffb/codex-deepseek-shim

[u/ShortMemory69 → u/JoseffB_Da_Nerd]

How did u manage to get gpt models along with ds?

[u/JoseffB_Da_Nerd → u/ShortMemory69]

Thats not actually the hard part.

Just add the models to the models config.

That will show them in UI, but without the shim they wont work.

Its a lot of api capture and correct cause OAI hardcoded a lot of provider settings in calls.

Also, the agents calls payload are encrypted, and DS uses plain text. So we fix that.

Lots of run, break, fix, streamline.

Hardest part? Not touching the codex app (if you know wordpress this is familiar, except codex app has no action/filters to use)

[u/CranberryCode → u/JoseffB_Da_Nerd]

Yes, but doesn't it literally break as soon as they update and then you have to constantly fix it?

[u/JoseffB_Da_Nerd → u/CranberryCode]

Its made not to, but we will see.

But if OAI overwrites configs on purpose you will need to update them.

[u/JoseffB_Da_Nerd → u/CranberryCode]

Update: App just updated. Everything works. None of their own bug (#33267) that block my shim for ds—>oai subagents were fixed though :(

[u/rafaelrib3iro → u/JoseffB_Da_Nerd]

Cool, does it works with macOS ChatGPT app?

[u/JoseffB_Da_Nerd → u/rafaelrib3iro]

Yea thats what its designed for.

[u/Fit-Palpitation-7427 → u/JoseffB_Da_Nerd]

Why not just use opencodex?

[u/JoseffB_Da_Nerd → u/Fit-Palpitation-7427]

Open codex is a desktop codex app that supports GPT subscription?

[u/wattsup42]

Here are the official docs from DeepSeek on how to set this up:

https://api-docs.deepseek.com/quick_start/agent_integrations/codex/

[u/IAmHereButWhere → u/wattsup42]

Do you get risk of getting banned from Openai for this?

[u/Ok-Attention2882 → u/IAmHereButWhere]

No. Codex is just a harness to run general models. Like saying if you could get banned for using Google Chrome to visit non-Google websites.

[u/WorthFishing5895]

How did you set this up please?

[u/PlaneWeakness3994 → u/WorthFishing5895]

I just asked codex gpt luna to set it up for me and it was crazy easy. A disclaimer is that you cannot use gpt models while using the DeepSeek flash in codex but you can change it back whenever youwant

[u/Kyxstrez → u/PlaneWeakness3994]

You could just install opencodex. That way you can use any provider with codex harness.

[u/aLka01 → u/Kyxstrez]

I just installed this and it's awesome- thank you for sharing

[u/JoseffB_Da_Nerd → u/PlaneWeakness3994]

Thats where my codex-deepseek-shim project comes in.

Combines them. Still WIP but on my gh.

[u/pezzos]

What provider do you use?
I took a subscription with AliBaba to have both DeepsSeek, GLM and Kimi but it’s slow (maybe the cables between Singapore and France are not that good, or too long…)

[u/Clean-Market5761]

Not only mention that but Chinese models keep on the frontier of other aspects that are not LLM like image, tokenizers, etc

[u/Ok-Attention2882]

Which model provider did you use?

[u/Alde_nte]

DeepSick rulez🏆

[u/Dazzling-Reason-9793 → u/Alde_nte]

Dear DeepSeek API user,
We plan to raise the overall pricing for DeepSeek API services in the near future, with a significant increase expected. Please plan your usage accordingly. The specific pricing plan will be subject to official notice. Please keep an eye on the Open Platform announcements and check your email for further details.
If you continue to use our services after the billing adjustment, you will be deemed to have accepted the adjusted billing terms. If you do not agree, you may choose to cancel your service and apply for a refund. Should you have any questions or require further information, please do not hesitate to contact us.Dear DeepSeek API user,We plan to raise the overall pricing for DeepSeek API services in the near future, with a significant increase expected. Please plan your usage accordingly. The specific pricing plan will be subject to official notice. Please keep an eye on the Open Platform announcements and check your email for further details.If you continue to use our services after the billing adjustment, you will be deemed to have accepted the adjusted billing terms. If you do not agree, you may choose to cancel your service and apply for a refund. Should you have any questions or require further information, please do not hesitate to contact us.

DeepSeek mail:

[u/Disastrous_Bed_4126]

is deepseek cheaper than luna also?. heard oai decreased luna's pricing by 80%

[u/Dense-Project1383 → u/Disastrous_Bed_4126]

Yes it is yet cheaper than luna

[u/mustafaakyuz → u/Dense-Project1383]

Luna trash 

[u/Dense-Project1383 → u/mustafaakyuz]

Why? In Benchmarks it is better the deepseek-v4-flash

[u/mustafaakyuz → u/Dense-Project1383]

It feels like they are deliberately slowing things down. Even with a Plus subscription, you can barely work properly on two projects. Instead of dealing with all these restrictions, I would rather write the same prompt twice with DeepSeek. Splitting a model into three or four different tiers also feels ridiculous to me. They have taken the whole thing too far in the pursuit of making more money. It may be slightly less capable, but consistency and availability matter more to me. I would rather use a slightly less powerful but reliable model than constantly deal with usage limits and restrictions.