Yes, the big proprietary cloud models have an edge, but it is narrow and the open-weight models are constantly closing the gap. There is no moat when it comes to AI models and no company has yet discovered some secret special sauce to improve their model significantly over others.

Running the latest and greatest open-weight GLM, Kimi, or Qwen model is basically equivalent to running the previous latest and greatest version of Claude. So if you were happy with Claude then, you'll basically be happy with an open-weight model now.