Yes it's true that it's not super clear whether these prices are permanent or short term promotions. On the other hand, there are so many providers making promotional offerings that you could probably easily switch from one to another should their prices go up?

If you click the provider it shows the precision, 45% off at AkashML shows FP8. The drawback is the small context window, at 96k.

Then there's 43% off at StreamLake with FP8 precision and 1M context window.

There is nothing to doubt, the cheapest price on openrouter is ~45% lower than when GLM5.2 was released.