It seems that the old deal was exclusivity to MSFT with revenue share, and now no exclusivity, no revenue share.

Bear in mind that MSFT have rights to OpenAI IP (as well as owning ~30% of them). The only reason they were giving revenue share was in return for exclusivity.

Azure was the only non-OpenAI provider that was allowed to provide OpenAI models. The comparison here is with Anthropic whose models are on both GCP and AWS (and technically also Azure though I think that might just be billing passthrough to Anthropic).

I suppose continue to host until the 2030/32 that they have access to but not share revenues when they use those models for their products like the bazillions of Copilots.