Every company I have seen implements more or less the exact same stack, with a few small variations. The problem is that it is often not very good and is usually months, if not years, behind. I have already seen this in several places, including a few F250 companies.

Frankly, it is a waste of time. It is expensive to build, expensive to maintain going forward, and often already dated by the time it is finished because things have moved on.

Also, as much as I like code, and would personally prefer to build things in code, a lot of internal innovation happens because end users have access to agentic tools. Yet, from the outset, both OpenAI and Anthropic FDE approaches seem heavily code-driven. I might be mistaken.

In my opinion, it is much better to deploy a more customisable harness that sits across the different technology stacks that is also user-friendly. But then I am biased, because that is what we do, so take this comment as you will.