Claude Sonnet 4.6 vs Qwen3.6-27B

Pick Claude Sonnet 4.6 if you want the stronger benchmark profile. Qwen3.6-27B only becomes the better choice if coding is the priority or you want the cheaper token bill.

Claude Sonnet 4.6 is clearly ahead on the provisional aggregate, 86 to 72. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Claude Sonnet 4.6's sharpest advantage is in knowledge, where it averages 73.7 against 62.2. The single biggest benchmark swing on the page is SuperGPQA, 95% to 66%. Qwen3.6-27B does hit back in coding, so the answer changes if that is the part of the workload you care about most.

Claude Sonnet 4.6 is also the more expensive model on tokens at $3.00 input / $15.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Qwen3.6-27B. That is roughly Infinityx on output cost alone. Qwen3.6-27B is the reasoning model in the pair, while Claude Sonnet 4.6 is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Qwen3.6-27B gives you the larger context window at 262K, compared with 200K for Claude Sonnet 4.6.