That seems absolutely crazy to do. One could argue that the marginal cost to work for using a work laptop is zero and the work is still yours (still beyond the risk I’m willing to take). Using a company’s AI account is literally using the company’s resources for a personal project. There is no plausible case where they don’t own it.

There was a brief moment in all the hullabaloo that this went unnoticed :X

That potentially consumes a lot more resources than the very negligible marginal wear and tear that using a work computer would cause.