On the other hand, they have always exposed their raw chain of thought, so you know exactly what you're paying for, unlike OpenAI who hides it. Similarly they allow an actual thinking budget rather than vague "low, medium, high", again unlike OpenAI. They also allow API access to all their models without draconic send-us-your-personal-data-KYC, once more unlikely OpenAI.

They might not fit your personal definition of "openness", but they do fit many other equally valid interpretations of that contept.