People can't seem to agree on what "Opus class" even means (the latest Opus is apparently pretty weak) but DeepSeek Pro, Kimi and GLM all are quite capable.
OpenAI was offering 2x usage at one point and I still used opus just because it's so much more effective.
Anthropic has been releasing models named Opus since 2024 with Claude 3 Opus.
Opus has gotten vastly more capable since then.
Local model far surpass Opus 3. They even surpass Opus 4 on most benchmarks.
Sure, if you compare to the latest Opus 4.8 or even 4.6, they're not there yet. But there's a huge difference in performance between 4 and 4.8.
When I colloquially say Opus level I really mean Opus 4.5 or later