I thought that was the code harness simply minifying the outputs. Many models now no longer return the entire chain-of-thought (to avoid distillation attacks). So yes, we don't get the raw LLM output, but I think it's just the thinking summarized, not a complex orchestration or different models.
I do agree though that now cloud models are kind of a black box, that's not only obfuscated but also changes over time. Companies seem to be changing model capabilities without notifying users, or even hiddenly serving completely different models. This is even worse via OpenRouter, with providers serving open-source models, some of them serve heavily quantized versions or even completely different models.