GPT-5.5 or Claude Opus 5.5 — which is better in 2026?

The best way to compare these models is to start with QueryWise data rather than marketing claims. In the current ranking, GPT-5.5 is in 20 place with a score of 7.2 out of 10. Claude Opus 5.5 ranks 1 with 9.9 out of 10. By overall rating, Claude Opus 5.5 leads with 9.9.

The difference becomes visible in an everyday scenario: a user uploads a long document, asks the model to find contradictions, and then requests a plain-language rewrite of the conclusions. The ranking leader usually does a better job of maintaining the overall thread, but GPT-5.5 should not be dismissed. It has particularly strong results in coding and reasoning.

Answer quality: who leads according to QueryWise data?

GPT-5.5 has a coding score of 9.3 and a reasoning score of 9.4. That is a strong combination for debugging software, choosing an architecture, or checking several conditions step by step. Its overall result remains 7.2, meaning it trails ranking leader Claude Opus 5.5 by a noticeable margin in QueryWise.

The model’s overall score is 9.9, and its ranking position is 1. The fair conclusion is straightforward: Claude Opus 5.5 currently leads by score, while GPT-5.5 is especially convincing when a task demands technical precision and step-by-step verification.

We tested both models with real questions. For example: “Find the bug in a Python function that calculates VAT for an order with multiple rates, explain the cause, and suggest tests.” In this kind of prompt, GPT-5.5 breaks the formula down by branch and usually catches the edge case involving a zero rate. Claude Opus 5.5 is worth testing in a longer dialogue: it tends to preserve the original constraints better when style and response-format requirements are added to the correction.

Price and speed without marketing spin

The median response speed for either model has not yet accumulated enough telemetry. Calling one model faster than the other would therefore be speculation.

The difference in the cost of an average question is already clear. GPT-5.5 costs about 25 ₸, while Claude Opus 5.5 costs 18 ₸. If you send 20 ordinary queries a day, the total depends on the current token rates, but the cheaper model saves roughly one-fifth of the budget only when the number of questions and context length are comparable.

For users in Kazakhstan, this is a practical consideration. Claude Opus 5.5 makes more sense for frequent short queries if it is currently cheaper. GPT-5.5 is worth paying for when one accurate coding answer can replace several rounds of fixes.

Context and task types

GPT-5.5 accepts a context of 1.1M, while Claude Opus 5.5 works with a 1M window. Both figures are designed for large materials, but window size alone does not guarantee the same quality on every page. What matters more is how well the model retains conditions, tables, and links within a specific prompt.

If I had to analyze a 200-page contract in one evening and prepare a list of negotiation points, I would start with Claude Opus 5.5 if it remains the current score leader. For a large technical specification with API examples, GPT-5.5 looks more practical: its reasoning score is 9.4 and its coding score is 9.3, directly supporting this type of work.

There is also a more everyday test. Ask both models to create a study plan for an exam covering specific topics, then add a work schedule, time limits, and a request to leave out sections you have already studied. Prefer Claude Opus 5.5 when carefully retaining every constraint throughout a long dialogue matters most. GPT-5.5 is better suited when the plan needs to become a table, formulas, or a small script.

In QueryWise, you can send the same question to both models and see side by side where they agree and where they differ. That is more useful than choosing by name: a different answer about a contract clause or code fragment immediately highlights what deserves a second check.

The honest verdict

By current score, there is one winner: Claude Opus 5.5 with 9.9. For long documents, sustained editorial work, and tasks where mistakes are costly, choose the ranking leader. That does not mean GPT-5.5 is weaker at everything: its current coding score is 9.3 and its reasoning score is 9.4, so it may be the better value for debugging, technical explanations, and complex conditions.

If you need a cheaper average query, compare 25 ₸ for GPT-5.5 with 18 ₸ for Claude Opus 5.5. For learning from specific material or checking an important decision, it makes sense to run the question through both models. QueryWise provides three free questions to start, but AI answers are not a substitute for medical, legal, or financial advice.