GPT-6 Sol vs Claude Opus 5.5 — which is better?

Answer quality: Claude Opus 5.5 has the edge

In the QueryWise ranking, Claude Opus 5.5 is in 1 place with a score of 9.9 out of 10. GPT-6 Sol ranks 10 and scores 8.6 out of 10. Claude Opus 5.5 is currently ahead by score: this is not a formal tie, but a clear gap in favor of the ranking leader.

We tested both models with real-world questions, including: “Create a migration plan for moving an online store from a monolith to microservices, identify risks for payments in tenge, and propose a rollback sequence.” Claude Opus 5.5 does a better job of preserving the task’s constraints and connecting technical decisions to operational risks. GPT-6 Sol stays on point, but in a long plan it may shift to general wording sooner and leave some conditions underdeveloped.

By overall score, Claude Opus 5.5 is currently ahead.

Price and speed in QueryWise

A typical question costs about 10 ₸ with GPT-6 Sol and about 18 ₸ with Claude Opus 5.5. The difference becomes noticeable when you send dozens of requests a day. For a short email, translation, or first draft, GPT-6 Sol looks more practical: paying extra for every simple answer is not always worthwhile.

Claude Opus 5.5 costs more, but the price makes sense when a mistake would cost more than the request itself. For example, when reviewing tender requirements, preparing an architecture document, or checking a large report, saving a few tenge can be a false economy.

There is not yet enough telemetry in QueryWise to establish a reliable median response speed: the current values are — for GPT-6 Sol and — for Claude Opus 5.5. Calling one model faster would therefore be speculation. In practice, wait time depends on the length of the prompt and the selected mode, not just the model name.

Context and use cases: where the difference matters

Claude Opus 5.5 supports a context size of 1M. In the current QueryWise data, GPT-6 Sol’s context window is listed as 1.1M. That makes Claude the more obvious choice when you need to analyze a large body of material in one pass—for example, a several-hundred-page contract together with its appendices, meeting minutes, and requirements table.

GPT-6 Sol is better suited to short and medium-length prompts where cost and a quick start matter. Try asking: “Rewrite this email to a supplier in a polite business style, preserving the amount in tenge, the delivery deadline, and the prepayment condition.” This task does not require a huge context window, so the more expensive model will not necessarily deliver a proportionally better result.

Claude Opus 5.5 is especially strong on tasks with several related constraints. For example: “Compare two versions of a contract, find discrepancies in payment terms, highlight risks for the customer, and prepare a list of questions for a lawyer.” The model is better at preserving the structure of the source documents. This is still not legal advice: a qualified professional should make the final decision.

For studying, the right choice depends on the material. If you need to work through a long textbook chapter in one evening, ask twenty follow-up questions, and preserve links between chapters, Claude Opus 5.5 has the advantage thanks to its large context. For explaining one formula, checking an essay, or outlining a presentation, GPT-6 Sol may be more cost-effective.

Using both models together in QueryWise

In QueryWise, you can send the same question to both models and see where their answers agree. This is useful not for voting, but for finding weak points: one model may suggest a solution while the other flags a missed condition or questionable assumption. For work documents, this approach is more practical than blindly trusting a single answer.

The honest verdict

If you want the best overall result based on the current ranking, choose Claude Opus 5.5: this is the model currently leading the QueryWise ranking with a score of 9.9. For long documents, complex reasoning, and tasks with many constraints, Claude Opus 5.5 is also the practical winner.

Choose GPT-6 Sol when the cost of frequent short requests matters and you do not need to upload a huge archive of material. Claude Opus 5.5 is better for analyzing large documents and handling tasks where the cost of missing a detail is higher than the price of the request. You can try both models free in QueryWise: three questions are available at the start, after which payment is charged in tenge.