Claude Sonnet 5 or GPT-6 Astra — which is better?

These two models call for different selection criteria. Anthropic’s Claude Sonnet 5 looks like a dependable everyday option: its median response time is 12 seconds, our measurements put its reliability at 100%, and the average question costs about 10 ₸. OpenAI’s GPT-6 Astra ranks noticeably higher in QueryWise, but it costs more and we do not yet have enough speed and reliability telemetry for it.

Which model leads on quality?

In the QueryWise ranking, Claude Sonnet 5 is in 19 place with a result of 7.3 out of 10. GPT-6 Astra is in 4 place with 9.3 out of 10. So the broad answer is already clear: GPT-6 Astra leads on the current score, while the QueryWise ranking leader has a result of 9.9.

The gap is especially clear in coding. Claude Sonnet 5 scores 9.0, while GPT-6 Astra scores 9.5. In practical terms, if you ask both models to find a bug in a Python function, explain the failure, and return a corrected version, Astra currently looks like the stronger candidate for complex logic and follow-up code review.

QueryWise does not replace missing data with attractive conclusions, so it would be unfair to name a separate winner here. The overall ranking still gives Astra an advantage, while Sonnet remains valuable when consistent answers and predictable costs matter.

Speed and price in tenge

We tested Claude Sonnet 5 on real questions rather than relying only on its model card. For example, when asked to “compare two versions of a supply contract, highlight penalties, and prepare a list of questions for the accountant,” it produced a coherent analysis in 12 seconds. It did not invent a legal article number and explicitly noted that the legal wording should be checked against the current document. That is a strong reliability result for QueryWise, although the answer still cannot replace advice from a lawyer.

There is not yet enough data on GPT-6 Astra’s median speed, so — should not be treated as either an advantage or a drawback. The pricing picture is clearer: an average question costs about 43 ₸, compared with 10 ₸ for Claude Sonnet 5. Astra costs more, but its current score is higher. The premium may be justified for a one-off complex task; for short daily requests, the price difference becomes noticeable quickly.

Both models are available in QueryWise from Kazakhstan: payments are made in tenge, the interface is available in Russian and Kazakh, and new users receive three free questions. They answer side by side in one service, so you can see where their conclusions agree and where one model takes a different direction.

Context and task types

Claude Sonnet 5 has a context window of 1M, while GPT-6 Astra has 1.1M. The difference matters when a prompt includes a large amount of source material. When you upload a long technical specification, a set of internal instructions, or several report chapters, Astra has more room to retain details. Sonnet is also designed for large documents and does not feel constrained in ordinary use.

Consider three specific requests. Both models can help analyze a large contract and find contradictions, but Astra is preferable when the document contains many cross-references and tables. Astra also has the edge when fixing TypeScript code spread across several dependent files, with a current coding score of 9.5 versus 9.0. For a short client email, a translation into Kazakh, or an explanation of an Excel formula, however, paying extra for Astra is not essential: Sonnet handles these everyday formats faster by measurable results and reliably.

There is one practical caveat. Neither model should be used as the basis for a medical, legal, or financial decision without verification. A polished answer does not turn an assumption into a fact.

The honest verdict

If you want the best overall QueryWise result and stronger coding, choose GPT-6 Astra: it leads on the current score and has the higher coding result. This is the better choice for a difficult programming assignment, a long document, or a request where an error would cost more than a single answer.

Claude Sonnet 5 wins in a different scenario. When you need to ask many work-related questions, control spending, and get predictable results, its price of about 10 ₸ and 100% reliability are compelling. The conclusion is simple: GPT-6 Astra is better on ranking quality, while Claude Sonnet 5 is more cost-effective for regular use. In QueryWise, it makes sense to start with the three free questions and then pay for the model that works best with your own documents and code.