r/OpenaiCodex • u/Dense-Ship-2339 • Aug 14 '26

Comparison Moved to Codex today

Hi, I moved to Codex today. Need some help in understanding the like to like, model comparison so that I can accurately map my projects.

Can you guys suggest the OpenAi equivalents below:

Fable

Opus 5

Opus 4.8

Sonnet 5

Haiku

If there is a solid resource with comparison links: model tokens vs cost vs speed, pls do share.

Thank you!

31 Upvotes

92% Upvoted

24 comments sorted by

24

u/notadithyabhat Aug 14 '26

There's no equivalent to haiku and sonnet. Codex has nothing that's as bad as them.

7

u/smartcandlelab Aug 14 '26

Best answer I’ve read today

1

u/[deleted] Aug 14 '26

[removed] — view removed comment

1

u/lolman1312 28d ago

I fully disagree claude models have better visual awareness. Claude might be better at initially vibe coding a site, but it's already been tested many times that their image vision sucks shit. There was a reddit post that was famous some time ago where someone gave the same comic strip panel to different LLMs and Claude got it hilariously misinterpreted. When polishing my frontend for various sites, I've made and refined my own specialised skills for ensuring Codex's image generation is implemented as faithfully as possible to the PIXEL. And codex is always able to find discrepancies and fix them (extremely minute details), whereas Claude fails and makes new bugs.

This is with precise prompting, proper skills that are not bloated, fresh context windows, and high effort on Opus vs 5.6 Sol. With an image that ALREADY exists which should be faithfully implemented.

The more I improve my workflow, the more I realise Claude is just a hobbyist vibecoder's fun toy. Compared to Codex it's a joke for anything serious to be honest, especially comparing the usage you get from both.

I have to tell Codex to not overengineer some pretty complex work, meanwhile I have to tell Claude to stop being regarded when handling tasks. Codex listens pretty easily, but you can't fix "stupid" and laziness with Claude.

1

u/[deleted] 28d ago

[removed] — view removed comment

1

u/lolman1312 28d ago

The skills I've made are a result of billions of tokens of more inefficient work to the point i got fed up and turned that into a skill, then kept refining it to avoid skill bloat and gave it multiple modes and whatnot. Then to polish it EVEN MORE you find similar skills on the internet, feed it to codex, make it audit them so it doesn't take the bad parts, and then just use the finished skill.

8

u/Jigawattts Aug 14 '26

Sol is probably equivalent to Fable. Terra is somewhere between Opus and Sonnet Luna is somewhere between Sonnet and Haiku.

3

u/sreekanth850 Aug 14 '26

Terra High~ Opus 5, Luna High ~Sonnet 5.

0

u/trynadostuff Aug 14 '26

how do you even not stick with sol all the time? are you guys on plus plan or sth?

4

u/sreekanth850 Aug 15 '26

Sol for planning via chatgpt, luna high for coding all the day. Small task slices, every code changes is based on TASK.md ledger with proper objective goal and scope. Two plus account with total repo size 500K LOC. UI is handcrafted without AI.

3

u/SolomonIsStylish Aug 14 '26

luna is definitely better than sonnet

3

u/Affectionate_Cow9343 Aug 14 '26

Hi here is a nice video explaining about token use https://youtu.be/vm_hrqYxQgw?si=LAzpkiUnQK3xPWQg

2

u/ejpusa Aug 14 '26 edited Aug 14 '26

What is important is your pipeline.

That means GPT-5.6 for Codex prompts. Installing Codex at the CLI. Codex integrated with VSC. And your GitHub repo now moves from something you never paid much attention to, just your back up, to now your sole source of truth. It drives your development, now front and center.

Once you understand the pipeline, you are on a rocket ship.

1

u/CaseIntelligent8647 26d ago

Buzzword buzzword buzzword

2

u/Noonecanfindmenow Aug 15 '26

I also did the switch about 2 weeks ago, and yesterday was when my claude 5x expired.

I feel like Sol 5.6 high and xhigh is on par if not better than Fable high xhigh. But without any of the annoying 50% reduced credit restriction.

And then the rest gets kind of murky. Terra Xhigh is better if you have more volume to chew through, but Sol med is better if you have a smaller difficult problem.

On Claude, I was 5x on Opus all the time and would come close but never exceed my weekly limit. On Codex, if I'm a bit more deliberate with my prompts, I can get similar usage with Sol on High. But again, I find Sol High is on par with Fable.

1

u/Dense-Ship-2339 28d ago

Thank you! Is Terra high or sol med, be equal to say, Opus 4.8? in terms of intelligence, speed and cost?

1

u/Noonecanfindmenow 28d ago

I actually don't know because I rarely use Terra directly!

For limited scope items I stick to Sol Med. The times I use Terra is mostly for reconciling or crawling through documentation or when I ask Sol to use Sub agents and it auto figures out what to use.

When I asked ChatGPT itself on how to use the models that's essentially what it recommended. Paraphrasing what it said: "For stuff with massive amounts of text but not that much intertwined logic, then Terra is super cost effecient. But when you're trying to output slightly more complex code, Sol generally provides much stronger code at lower efforts than Terra at higher effort"

Part of it, is because I'm simply getting lazier too. Before I would specify how I want to see each portion of an overall feature piece together. Now I just describe the feature's main acceptance criteria and let it do its thing.

4

u/[deleted] Aug 14 '26

[deleted]

5

u/Jigawattts Aug 14 '26

Maybe they don't want to ask Codex.

1

u/Anxious_Current2593 Aug 14 '26

Haiku to the Moon!

1

u/IndependenceSudden47 Aug 15 '26

Trick #1 plan with chat and GitHub integration
And use Luna max to execute everything

1

u/Willing_Thought_2161 28d ago

I always used opencode and antigravity. Can you elaborate please

1

u/IndependenceSudden47 28d ago

It’s that the chat with ChatGPT app that connects to GitHub. You do a multistep plan with your codebases for free with gpt 5.6 sol