Luna is obviously very competitively priced, and I'm expecting Haiku 5.5 will be strong based on this release and get back to more competitive pricing since the model family shrank this generation (though Anthropic has proven my expectations wrong on the latter before)
Where GLM, Kimi and co shine for me is when you need to offer near-frontier capabilities in your product and straight up can't afford frontier models: if you're offering Opus in a product with API pricing, $20 a month Claude Pro is offering about $500 of comparable usage in a harness that flexes to a lot of tasks.
Offering GLM/Kimi increases the max complexity of problems you can solve successfully compared to stepping down to Luna/Haiku, while letting you offer a reasonable amount of usage. Once $20 a month Pro is comparable to "just" $100 of usage in your product, it's much easier to close the gap with UX, a better constrained harness, etc.