They've got an openai + anthropic compatible endpoints. I got far enough to run some tests on the openai endpoint, albeit with some finagling (their /models list is empty, my tool auto-configures using that, was an initial stumble).
Thanks! I found the OpenAI-compatible endpoint and got it working. I ran Inkling on a couple of my own evals. It looks promising, but on my cases it still fell short of GPT-5.4 and GPT-5.6 Luna.