FWIW Opencode Go is giving 3x MiniMax M3 access right now. According to their chart you get almost 10x as much access to MM3 vs GLM 5.2.

Considering how close the models are, the extra free queries may be worth it.

Yes, that's what I'm finding too. There seems to be a concerted promotional pricing campaign tied to M3's release across providers. Since their differences are subtle, it makes a lot of sense to fan-out to M3.