Lot of people are building agent runtime platforms right now. Look at LiteLLM's play into the space, for example. It's the new hot space for innovation. IMO the main play here is going to be on the self hosted/provenance aspect, because every major provider is now branching into services now to try and entrap you into their hosted platform ecosystem with all of these integrations
I actually considered lite LLM to get Qwen to work with codex. It mostly works without lite LLM but MCP servers aren’t available, lite LLM tricks into think Qwen is an OpenAI model.