Pretty much all of these companies have a similar LLM for internal use, but they've so far decided that releasing it externally doesn't make sense. OpenAI's mai

Pretty much all of these companies have a similar LLM for internal use, but they've so far decided that releasing it externally doesn't make sense. OpenAI's main difference is making the model available for public demo, which they're willing to do because they're but willing to suffer reputational damage from the model saying something stupid, and they're more optimistic that public access will help them figure out how to make money off the model. To understand the bigger companies, you have to ask "why go public?" Bigger companies just don't see a general purpose LLM as a product. You could argue that that's a big failure of imagination, but they're not lagging behind on the tech itself.