Well they're not public yet so you'll have to put up with rumors. But the numbers are available for companies like DeepSeek say they have an 80% profit margin, so it stands to reason OAI etc would do similar numbers considering they charge much more.

AFAIK,

1. the 80% margin from 2025 was theoretical,

2. they're relying on distillation/synthetic data for training,

3. and have been very opaque about cross-subsidization of R&D with their models.

The distillation alone adds a big asterisk for comparisons.