Right. Opus 4.5 8 months ago, good enough for agentic coding. How far behind that are open weight models? More than 8 months? But how much more? When will they reach Opus 4.5 level? A few months from now? A year from now? Never?
I think in the next 6 months we will have Opus 4.5 performance in open models. We are very close
GLM 5.2 came out today and the early reports have been quite good. Very difficult to run except on prosumer hardware, but small business could quite easily (or something like open router).
The power of Opus isn't just the model, it's in the harness too.
You can try it by using Opus through Github Copilot vs official Anthropic tools. You'll get very different results and experience (in my opinion).