You can use Opus with OpenCode anytime you want, just not with the Claude plan. You can use it via API with any provider, including Anthropic's API. You can use it with Github Copilot's plan. The only thing you can't do without getting banned is use OpenCode with one of Claude's plans.

I keep seeing this "you can use the inconvenient and unpredictably costly way all you want" pedantic kneejerk response so often lately.

It's like saying well humans can fly with a paraglider. It is correct and useless. Most here won't have cash to burn with unbounded opus api usage.