GPT-5.6 Sol or Claude Opus 5.5 — which is better?

Quality: Claude leads on the overall score

In the QueryWise rankings, GPT-5.6 Sol is in 11 place with a result of 8.5 out of 10. Claude Opus 5.5 is in 1 place with 9.9. By the current overall score, Claude Opus 5.5 is ahead.

That does not mean GPT-5.6 Sol is weaker at everything. It looks convincing in the two measured areas: coding — 9.5, reasoning — 9.5.

We tested GPT-5.6 Sol with real questions. For a prompt such as “find the error in this Python snippet, explain the cause, and rewrite the function so it does not fail on an empty list,” the model should normally deliver three useful layers at once: identify the problematic line, explain the exception, and suggest a fix. These tasks align well with its strong coding results. Claude Opus 5.5 has the higher overall QueryWise score, so for a difficult answer with multiple conditions, I would try it first.

There is one important caveat: a ranking does not replace fact-checking. Even a strong model can confidently get a recent law, library documentation, or numerical calculation wrong. Medical, legal, and financial decisions should be checked with a qualified professional.

Price and speed: paying more for a higher score

An average question to GPT-5.6 Sol costs about 18 ₸, while a question to Claude Opus 5.5 costs about 18 ₸. At the current rates, the difference is roughly eight tenge per request. That is a small amount for occasional complex tasks. For hundreds of requests a month, it becomes a separate budget line.

A median response speed has not yet been collected in sufficient volume, so it would be misleading to compare the models in seconds. Both options are available from Kazakhstan through QueryWise: payments are made in tenge, the interface is available in Russian and Kazakh, and new users receive three free questions. It is a practical way to test the models on your own documents and work-related prompts before paying for access.

If budget matters more than the maximum score, GPT-5.6 Sol looks like the more rational choice. It is cheaper and already performs strongly on coding and step-by-step analysis. If the cost of an error in a major contract, technical specification, or research project is higher than the price difference, Claude Opus 5.5 more often justifies the extra spend.

Context and task types

GPT-5.6 Sol supports a context of 1.1M, while Claude Opus 5.5 supports 1M. These are substantial volumes: you can upload a long contract, several project files, or a meeting transcript and then ask questions about the entire material. Sol has a slightly larger context window, but in practice, the quality of finding the relevant passage matters more than a single number.

Consider three common situations.

• Code: you need to troubleshoot an SQL query, rewrite a Python function, and add tests. I would start with GPT-5.6 Sol here: its coding score is 9.5.
• Large document: you need to find contradictions in a 200-page contract in one evening and prepare a list of questions for a lawyer. Claude Opus 5.5 looks preferable thanks to its first place in the overall ranking and its 1M context.
• Complex plan: you need to compare relocation options, calculate expenses in tenge, and lay out the steps week by week. For this request, I would choose Claude Opus 5.5, because it currently has the higher overall score: 9.9.

In QueryWise, you can run the models side by side: they answer the same question, and you can immediately see where they agree and where one of them makes unnecessary assumptions. That is more useful than an advertising promise of the “smartest” model, especially when the request concerns local prices, Kazakhstan-specific documents, or Russian-to-Kazakh wording.

An honest verdict

For coding and tasks that require a quick technical explanation, GPT-5.6 Sol is a strong and more affordable option. It costs about 18 ₸, with coding and reasoning scores of 9.5 and 9.5.

For the hardest requests, long documents, and situations where the highest score matters most, the winner is Claude Opus 5.5. By the current score, Claude Opus 5.5 is ahead, and the QueryWise rating leader is Claude Opus 5.5 with 9.9.

My practical choice is simple: start with GPT-5.6 Sol when the question is technical and the budget is limited; choose Claude Opus 5.5 when the cost of an error is greater than the difference of a few tenge. For important answers, you can ask both models in QueryWise and review any discrepancies manually.