Go look at their past blog posts. OpenAI only ever benchmarks against their own models.
This is pretty common across industries. The leader doesn’t compare themselves to the competition.
Okay, it's common across other industries, but not this one. Here is Google, Facebook, and Anthropic comparing their frontier models to others[1][2][3].
[1] https://blog.google/technology/google-deepmind/gemini-model-...
[2] https://ai.meta.com/blog/llama-4-multimodal-intelligence/
Right. Those labs aren’t leading the industry.
Confusing take - Gemini 2.5 is probably the best general purpose coding model right now, and before that it was Sonnet 3.5. (Maybe 3.7 if you can get it to be less reward-hacky.) OpenAI hasn't had the best coding model for... coming up on a year, now? (o1-pro probably "outperformed" Sonnet 3.5 but you'd be waiting 10 minutes for a response, so.)
There is no uniform tactic for this type of marketing. They will compare against whomever they need to to suit their marketing goals.
Except they are far from the lead in model performance
Who has a (publicly released) model that is SOTA is constantly changing. It’s more interesting to see who is driving the innovation in the field, and right now that is pretty clearly OpenAI (GPT-3, first multi-modal model, first reasoning model, ect).