The fact is nobody has any idea what OpenAI's cash burn is. Measuring how much they're raising is not an adequate proxy. For all we know, they could be accumulating capital to weather an AI winter. It's also worth noting that OpenAI has not trained a new model since gpt4o (all subsequent models are routing systems and prompt chains built on top of 4), so the idea of OpenAI being stuck in some kind of runaway training…
https://www.theinformation.com/articles/openai-says-business...
https://epoch.ai/blog/training-compute-of-frontier-ai-models...