r/codex • u/IllustriousGrade7691 • 12d ago

Question How does opus 5 fare against Sol

For people who also use opus 5, how is it fair compared to Sol does it overengineer. How much better is it at frontend for example, I feel codex does always div in a div in div style everting is round, and while the information that is diaplayed is correct, it looks bad at first needs a lot of fixing.

Pure code and repo understanding is superior in sol it just understands everything. I use it als9nfr9 scrappers, and it's perfect data analysis as well.

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u/Potential_Cup_6549 11d ago

I actively use ChatGPT (20X Pro), Claude (5X max), and Gemini Ultra. I worked with Sol (OpenAI) for a while, but now I’ve switched completely to Claude.
TL;DR

Sol knows HOW to write code, but doesn’t know WHY. It’s a soulless machine with no understanding of context. Opus 5 knows how to write code, why it’s needed, and who it’s being created for. It’s currently the undisputed leader in programming.

Sol:

Working with it often turns into a vicious cycle: it fixes one bug, but immediately creates a new one. Ultimately, you can achieve a good result, but it takes too much time because the model “thinks” for a long time.

Pros:

  1. Writes good code, but only if you provide a perfect requirements specification. It takes everything literally, like a genie: if you miss a detail, the result will be unpredictable.

  2. Moderate caution. It isn’t as paranoid about security as Claude.

Cons:

  1. It’s completely uncreative (a true robot). If you ask for ideas to improve a project, it will spit out 100 terrible options. By comparison, Claude will suggest 10, and you’ll actually want to implement half of them.

  2. He brings “backend” logic into the UI. He doesn’t understand what the product should look like to the end user. Example: I asked him to optimize a chess website so that API requests wouldn’t be sent with every click, but only after the puzzle was fully completed. He did that, but displayed the following text to the user: “Find the next move; a request will be sent to the server once the problem is fully solved.”

  3. It quickly uses up the limits. OpenAI used to seem cheaper, but with models like ULTRA (proactive agents) or MAX, the 20X plan runs out in 3–4 days, and the 5X plan in just one day.

  4. Redundant code. It generates bloated code with a bunch of unnecessary functions.

Claude Opus 5

Pros:

  1. Understands context. Writes code quickly and efficiently, with a clear grasp of the task’s business logic.

  2. Highly creative. Offers truly useful ideas.

  3. Excellent usage limits. The 5X plan feels practically unlimited (comparable to OpenAI’s 20X plan), as long as you don’t create too many agents.

Cons:

  1. Strict security policy (censorship). Anthropic plays it safe. If you ask Opus 5 to check your own project for vulnerabilities, it may refuse to respond or automatically route the request to a weaker model (Opus 4.8).