The era of subsidised inference is truly ending. The new model multipliers ( https://docs.github.com/en/copilot/reference/copilot-billing... ) seem like a huge leap, though. From 1x to 6x for new-ish GPT and Sonnet models. 27x for Opus... Seems like folks would be better off with OpenRouter instead.
The only model I even used on Copilot was Sonnet and now its got a ridiculous multiplier.
At this point they might as well just charge per Million tokens like every other provider instead of having a subscription.